Papers by Fang Liu

128 papers
Verified Critical Step Optimization for LLM Agents (2026.findings-acl)

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Challenge: Critical Step Optimization (CSO) focuses preference learning on verified critical steps where alternative actions demonstrably flip task outcomes from failure to success.
Approach: They propose a method which focuses preference learning on verified critical steps where alternative actions demonstrably flip task outcomes from failure to success.
Outcome: The proposed method outperforms the existing methods on GAIA-Text-103 and XBench-DeepSearch while requiring supervision at only 16% of trajectory steps.
ICL CIPHERS: Quantifying ”Learning” in In-Context Learning via Substitution Ciphers (2025.emnlp-main)

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Challenge: Recent studies suggest that In-Context Learning operates in dual modes . however, disentangling these modes remains a challenging goal .
Approach: They propose a class of task reformulations based on substitution ciphers borrowed from classic cryptography.
Outcome: The proposed model can solve tasks with a BIJECTIVE mapping, but it requires 'deciphering' the latent cipher.
OmniCharacter: Towards Immersive Role-Playing Agents with Seamless Speech-Language Personality Interaction (2025.acl-long)

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Challenge: Existing methods focus on replicating dialogues in textual form, neglecting the role’s voice traits as a crucial effect in interaction, which tends to be more immersive experiences in realistic scenarios.
Approach: They propose a first seamless speech-language personality interaction model to achieve immersive RPAs with low latency.
Outcome: The proposed model exhibits role-specific personality traits and vocal traits throughout the interaction, enabling a mixture of speech and language responses.
VoxpopuliTTS: a large-scale multilingual TTS corpus for zero-shot speech generation (2025.coling-main)

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Challenge: Existing multilingual TTS datasets are limited in speech generation fields due to lack of quality data.
Approach: They propose to use 30,000 hours of high-quality speech data across 3 languages . they filter out low-quality text-text pairs and concatenate short transcripts .
Outcome: The proposed dataset comprises 30,000 hours of high-quality speech data, across 3 languages with multiple speakers and styles, suitable for various speech tasks such as TTS and ASR.
EvoAgentX: An Automated Framework for Evolving Agentic Workflows (2025.emnlp-demos)

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Challenge: Existing MAS frameworks often require manual workflow configuration and lack native support for dynamic evolution and performance optimization.
Approach: They propose an open-source platform that automates generation, execution, and evolutionary optimization of multi-agent workflows.
Outcome: The proposed platform automates generation, execution, and evolutionary optimization of multi-agent workflows.
GQLBench: A Large-Scale Cross-Domain, Cross-Dialect Benchmark for NL2GQL (2026.acl-long)

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Challenge: despite growing interest in NL2GQL, benchmarking progress has been constrained by the lack of resources that are simultaneously large-scale, cross-domain, and cross-dialect.
Approach: They propose a framework that integrates NL2SQL-to-NL2GQL conversion with graph-native data generation.
Outcome: The proposed framework supports execution-based evaluation on Cypher and ISO-GQL, covering hundreds of graph databases and over 20k natural language questions for each dialect.
CART: A Generative Cross-Modal Retrieval Framework With Coarse-To-Fine Semantic Modeling (2025.acl-long)

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Challenge: Cross-modal retrieval tasks are used to retrieve data from one modality or another based on a query from another modality.
Approach: They propose a generative cross-modal retrieval framework based on coarse-to-fine semantic modeling . they propose combining K-Means and RQ-VAE to discretize multimodal data into token sequences that support autoregressive generation.
Outcome: The proposed framework achieves excellent performance and efficiency in multimodal retrieval tasks.
Model Composition for Multimodal Large Language Models (2024.acl-long)

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Challenge: Existing methods for creating versatile MLLMs rely on joint training with paired instruction data, which is resource-intensive and challenging to extend to new modalities.
Approach: They propose a new paradigm for multimodal large language models by reusing modality encoders and merging LLM parameters.
Outcome: The proposed model retains the modal understanding capabilities of each original model.
TestNUC: Enhancing Test-Time Computing Approaches and Scaling through Neighboring Unlabeled Data Consistency (2025.acl-long)

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Challenge: Test-time computing approaches that leverage additional computational resources during inference have been proven effective in enhancing large language model performance.
Approach: They propose a linearly scaling approach that leverages local consistency of neighboring unlabeled data to improve test-time predictions.
Outcome: The proposed approach outperforms baseline methods such as prompting and self-consistency across eight datasets and performs robustly across embedding models.
LLMs Assist NLP Researchers: Critique Paper (Meta-)Reviewing (2024.emnlp-main)

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Challenge: a comparative analysis of paper (meta-)reviews by large language models (LLMs) aims to identify and distinguish LLMs from human activities .
Approach: They present a comparative analysis to identify and distinguish LLM activities from human activities.
Outcome: The proposed analysis aims to improve recognition of instances when someone implicitly uses LLMs for reviewing activities.
Annotations Are Not All You Need: A Cross-modal Knowledge Transfer Network for Unsupervised Temporal Sentence Grounding (2023.findings-emnlp)

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Challenge: Existing work on temporal sentence grounding rely on expensive video-query paired annotations . despite this, there are no ground-truth annotations in the current work .
Approach: They propose to use paired video-query and segment boundary annotations to generate temporal sentence grounding without training.
Outcome: The proposed model outperforms existing unsupervised methods and beats supervised ones on two challenging datasets.
HTMuon: Improving Muon via Heavy-Tailed Spectral Correction (2026.findings-acl)

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Challenge: Muon’s orthogonalized update rule suppresses the emergence of heavy-tailed weight spectra and over-emphasizes the training along noise-dominated directions.
Approach: They propose to preserve Muon's ability to capture parameter interdependencies while producing heavier-tailed updates and inducing heavier-tail weight spectra.
Outcome: The proposed algorithm suppresses the emergence of heavy-tailed weight spectra and over-emphasizes training along noise-dominated directions.
TrInk: Ink Generation with Transformer Network (2025.emnlp-main)

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Challenge: Existing methods for handwriting generation capture global dependencies and can generate high-quality handwritten samples.
Approach: They propose a Transformer-based model for ink generation, TrInk, which captures global dependencies.
Outcome: The proposed model reduces character error rate and word error rate by 35.56% on the IAM-OnDB dataset compared to previous models.
RFS-Guard: Detecting Reasoning Hallucinations via Cross-Phase Routing Focus in Large Reasoning Models (2026.acl-long)

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Challenge: Large reasoning models (LRMs) generate intermediate reasoning traces before the final answer, yet they remain vulnerable to reasoning hallucinations such as subtle arithmetic errors.
Approach: They propose a Routing Focus Score (RFS) that measures how strongly cross-step attention routing aligns with semantic proximity derived from hidden-state cosine similarity.
Outcome: The proposed framework detects and localizes hallucinations without external tools or repeated sampling.
Reasoning as Gradient: Scaling MLE Agents Beyond Tree Search (2026.findings-acl)

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Challenge: LLM-based agents for machine learning engineering rely on tree search to rank candidates.
Approach: They propose an LLM-based agent that operationalizes gradient-based optimization.
Outcome: The proposed agent achieves a state-of-the-art 35.1% any-medal rate on MLE-Bench with a limited budget on a single GPU.
Context-DPO: Aligning Language Models for Context-Faithfulness (2025.findings-acl)

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Challenge: Context-DPO is the first alignment method specifically designed to enhance contextfaithfulness for large language models.
Approach: They propose a benchmark that simulates Retrieval-Augmented Generation scenarios with knowledge conflicts to evaluate context-faithfulness.
Outcome: The proposed method improves LLMs' context-faithfulness by 35% to 280% over open-source models.
Decoding by Contrasting Knowledge: Enhancing Large Language Model Confidence on Edited Facts (2025.acl-long)

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Challenge: In-context knowledge editing (ICE) is currently the most effective method for knowledge editing, but it is constrained by the black-box modeling of LLMs and lacks interpretability.
Approach: They propose a method to decode new knowledge by comparing logits with unedited knowledge to improve the accuracy of LLMs.
Outcome: The proposed method improves the performance of LLaMA3-8B-instruct on MQuAKE by up to 219%.
LightningDOT: Pre-training Visual-Semantic Embeddings for Real-Time Image-Text Retrieval (2021.naacl-main)

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Challenge: Existing pre-trained models suffer from slow inference speed due to cross-modal attention in transformer architecture.
Approach: They propose a multimodal approach that accelerates the inference time of ITR by thousands of times . they extract pre-cached feature indexes offline and employ instant dot-product matching online .
Outcome: The proposed approach outperforms existing models that consume 1000 times magnitude of computational hours using the same features.
DevEval: A Manually-Annotated Code Generation Benchmark Aligned with Real-World Code Repositories (2024.findings-acl)

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Challenge: Existing benchmarks are poorly aligned with real-world code repositories and are insufficient to evaluate the coding abilities of Large Language Models (LLMs).
Approach: They propose a repository-level benchmark named DevEval to evaluate LLMs' coding abilities in real-world code repositories.
Outcome: The proposed benchmarks show that the LLMs perform better in real-world code repositories than existing benchmarks.
LearnAlign: Data Selection for LLM Reinforcement Learning with Improved Gradient Alignment (2026.findings-acl)

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Challenge: Reinforcement learning with verifiable rewards (RLVR) is a key technique for enhancing LLMs’ reasoning abilities, yet its data inefficiency remains a major bottleneck.
Approach: They propose a gradient-alignment-based method which intelligently selects the learnable and representative training reasoning data for RLVR post-training.
Outcome: Experiments on five reasoning benchmarks show that the proposed method significantly reduces training data requirements while improving performance.
Cluster-Former: Clustering-based Sparse Transformer for Question Answering (2021.findings-acl)

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Challenge: Existing models for encoding long sequences in deep learning suffer from high latency and memory demands.
Approach: They propose a clustering-based sparse Transformer framework to perform attention across chunked sequences.
Outcome: The proposed framework achieves state-of-the-art on several major QA benchmarks.
TABGEN-ICL: Residual-Aware In-Context Example Selection for Tabular Data Generation (2025.findings-acl)

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Challenge: Existing approaches to tabular data generation require fine-tuning, which is computationally expensive.
Approach: They propose a new in-context learning framework to prompt a fixed LLM with in-constitut examples to enhance the in-text learning ability of LLMs for tabular data generation.
Outcome: The proposed framework outperforms random selection strategies on five real-world tabular datasets and reduces error rate by 42.2% on fidelity metric.
C-World: A Computer Use Agent Environment Creator (2026.acl-long)

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Challenge: C-World enables users to build agent environments on demand.
Approach: They propose a system that enables users to build agent environments on demand.
Outcome: The proposed system outperforms baselines on 119k samples and achieves Spearman = 0.883 ranking correlation with real execution.
Revealing and Enhancing Core Visual Regions: Harnessing Internal Attention Dynamics for Hallucination Mitigation in LVLMs (2026.findings-acl)

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Challenge: Existing training-free methods are vulnerable to the attention sink phenomenon . Existing methods include contrastive decoding and auxiliary expert models .
Approach: They propose a training-free attention intervention that constructs a PAD map to identify semantically core visual regions and applies per-head Median Absolute Deviation Scaling to adaptively control the intervention strength.
Outcome: The proposed intervention improves visual grounding and reduces hallucinations on multiple LVLMs and benchmarks.
If an LLM Were a Character, Would It Know Its Own Story? Evaluating Lifelong Learning in LLMs (2026.acl-long)

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Challenge: Existing benchmarks for large language models (LLMs) fail to capture these dynamics, focusing on static, open-ended evaluations.
Approach: They propose a benchmark to assess lifelong learning in large language models . they use two episodic datasets rich in narrative structure and character interactions .
Outcome: Experiments on LLMs show that non-parametric methods outperform parametric ones in managing stateful learning.
On the Role of Entity and Event Level Conceptualization in Generalizable Reasoning: A Survey of Tasks, Methods, Applications, and Future Directions (2025.findings-emnlp)

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Challenge: Conceptualization is a fundamental element of human cognition and plays a pivotal role in generalizable reasoning.
Approach: They propose to categorize different types of conceptualizations into four levels based on the types of instances being conceptualized.
Outcome: The proposed categorization of different types of conceptualizations into four levels based on the types of instances being conceptualized .
DVI-DTM: Dual-View Representation Learning for Interpretable Short Text Dynamic Topic Modeling (2026.acl-long)

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Challenge: Existing dynamic topic modeling methods face semantic ambiguity and interpretation ambiguities when applied to short texts.
Approach: They propose a Dual-View representation learning-based Interpretable short text Dynamic Topic Model to address semantic ambiguity and interpretation ambiguities.
Outcome: The proposed model outperforms the state-of-the-art models in topic alignment and dynamic topic quality metrics while producing highly interpretable topic descriptions.
Modeling Adversarial Attack on Pre-trained Language Models as Sequential Decision Making (2023.findings-acl)

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Challenge: Pre-trained language models (PLMs) have shown strong potential in various downstream tasks.
Approach: They propose to model adversarial attack task as a sequential decision-making problem where the whole attack process is sequential with two decision- making problems, i.e., word finder and word substitution.
Outcome: The proposed approach achieves the highest attack success rate with a comparable modification rate and semantic similarity to attack fine-tuned BERT.
LEGO-ABSA: A Prompt-based Task Assemblable Unified Generative Framework for Multi-task Aspect-based Sentiment Analysis (2022.coling-1)

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Challenge: Existing generative methods focus on a single task at a time.
Approach: They propose a unified generative multi-task framework that can solve multiple ABSA tasks . they propose to control the type of task prompts consisting of multiple element prompts .
Outcome: The proposed framework achieves state-of-the-art results in almost all ABSA tasks and competitive results in task transfer scenarios.
NER-guided Comprehensive Hierarchy-aware Prompt Tuning for Hierarchical Text Classification (2024.lrec-main)

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Challenge: Hierarchical text classification (HTC) is a challenging task in natural language processing due to its complex taxonomic label hierarchy.
Approach: They propose to use prompts to model hierarchical text classification (HTC) they propose to introduce conditional random fields and Global Pointer to establish hierarchic dependencies .
Outcome: The proposed approach achieves state-of-the-art (SoTA) performance on three public datasets.
Two-Stage Regularization-Based Structured Pruning for LLMs (2026.acl-long)

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Challenge: Structural pruning is a promising solution for large language models . prior structured pruning methods remove unimportant parameters based on certain metrics .
Approach: They propose a structural pruning method that iteratively learns the weights of transformer layers by adding their l1-norm to the loss function.
Outcome: The proposed pruning method outperforms strong layer-wise pruning methods without requiring retraining.
EXPLAIN: Enhancing Retrieval-Augmented Generation with Entity Summary (2025.acl-industry)

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Challenge: Existing document question answering methods reduce inference costs and input tokens.
Approach: They propose a retrieval-augmented generation method that automatically extracts useful entities and generates summaries from documents.
Outcome: The proposed method surpasses baseline retrieval-augmented generation (RAG) and long-context question answering (LC) methods achieve higher accuracy by processing entire documents, but at the cost of increased computational Corresponding authors.
DiVISe: Direct Visual-Input Speech Synthesis Preserving Speaker Characteristics And Intelligibility (2025.findings-naacl)

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Challenge: Video-to-speech (V2S) synthesis requires acoustic hints to accurately reconstruct both speech content and speaker characteristics from video clips alone.
Approach: They propose a video-to-speech (V2S) model that predicts Mel-spectrograms directly from video frames.
Outcome: The proposed model outperforms existing models in acoustic intelligibility and preserves speaker-specific characteristics.
KELE: Residual Knowledge Erasure for Enhanced Multi-hop Reasoning in Knowledge Editing (2025.findings-emnlp)

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Challenge: Existing knowledge editing techniques show limitations when applied to multi-hop reasoning . residual single-hop knowledge causes edited models to revert to original answers .
Approach: They propose a knowledge editing method that incorporates a Knowledge Erasure mechanism for Large language model Editing (KELE) they propose an erasure function for residual knowledge and an injection function for new knowledge .
Outcome: The proposed method significantly improves multi-hop reasoning capability of edited models.
Expanding before Inferring: Enhancing Factuality in Large Language Models through Premature Layers Interpolation (2025.emnlp-main)

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Challenge: Existing approaches to generating factually inconsistent outputs are resource-intensive.
Approach: They propose a plug-and-play intervention designed to enhance factuality by inserting premature layers formed through mathematical interpolation with adjacent layers.
Outcome: The proposed intervention reduces hallucinations while outperforming baselines on four datasets.
Do LLMs Know Tool Irrelevance? Demystifying Structural Alignment Bias in Tool Invocations (2026.acl-long)

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Challenge: Large language models (LLMs) have impressive capabilities in utilizing external tools, but in practice, they are often exposed to tools that are irrelevant to the user’s query, in which case the desired behavior is to refrain from invocations.
Approach: They propose a new dataset that decouples structural alignment from semantic relevance and propose rebalancing strategies that effectively mitigates structural alignment bias.
Outcome: The proposed approach effectively mitigates structural alignment bias without degrading general tool-use capabilities.
Contrastive Distillation on Intermediate Representations for Language Model Compression (2020.emnlp-main)

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Challenge: Existing methods to compress language models use a simple L_2 loss to distill knowledge in the intermediate representations of a large BERT model to a smaller one.
Approach: They propose a method that uses knowledge distillation to distill knowledge through intermediate layers of the teacher via a contrastive objective.
Outcome: The proposed method outperforms state-of-the-art methods on the GLUE benchmark.
GenPilot: A Multi-Agent System for Test-Time Prompt Optimization in Image Generation (2025.findings-emnlp)

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Challenge: Existing methods for text-to-image synthesis lack systematic error analysis and refinement strategies, resulting in limited reliability and effectiveness.
Approach: They propose a plug-and-play multi-agent system called GenPilot that integrates error analysis, clustering-based adaptive exploration, fine-grained verification and a memory module for iterative optimization.
Outcome: The proposed method improves text consistency and structural coherence on images with a plug-and-play system.
AIDE: Attribute-Guided MultI-Hop Data Expansion for Data Scarcity in Task-Specific Fine-tuning (2025.acl-industry)

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Challenge: Existing methods for fine-tuning large language models for specific tasks require extensive seed datasets or struggle to balance task relevance and data diversity.
Approach: They propose a data synthesis framework that uses a multi-hop process to expand very few seed data points while ensuring data diversity and task relevance.
Outcome: The proposed framework outperforms state-of-the-art methods in task-specific fine-tuning by over 30%.
MolTC: Towards Molecular Relational Modeling In Language Models (2024.findings-acl)

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Challenge: Molecular Relational Learning (MRL) is a promising way to understand interactions between molecular pairs.
Approach: They propose a novel LLM-based multi-modal framework for molecular interaction modeling following Chain-of-Thought (CoT) theory which integrates graphical information of two molecules in pair.
Outcome: The proposed framework integrates graphical information of two molecules in pair.
GROLE: Instance-Level Group Relative Optimization for LoRA Experts in Incremental Learning (2026.findings-acl)

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Challenge: Large language models demonstrate remarkable zero-shot generalization, but adapting to downstream tasks requires continual fine-tuning.
Approach: They propose a method that incrementally constructs a pool of frozen, task-specific LoRA experts.
Outcome: The proposed approach outperforms state-of-the-art methods in task-free and blurred-boundary settings.
Injecting Domain-Specific Knowledge into Large Language Models: A Comprehensive Survey (2025.findings-emnlp)

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Challenge: specialized LLMs are often limited in domain-specific applications that require specialized knowledge.
Approach: They provide a comprehensive overview of four key methods to enhance large language models by integrating domain-specific knowledge.
Outcome: The proposed methods are categorized into four key approaches: dynamic knowledge injection, static knowledge embedding, modular adapters, and prompt optimization.
Act-Adaptive Margin: Dynamically Calibrating Reward Models for Subjective Ambiguity (2026.acl-long)

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Challenge: Existing approaches to reward modeling in reinforcement learning tasks are limited when dealing with ambiguous preferences.
Approach: They propose to use AAM to dynamically calibrate preference margins using the Bradley-Terry model's internal parameter knowledge to improve reward modeling in subjective tasks.
Outcome: The proposed approach improves reward modeling by dynamically calibrating preference margins using the model’s internal parameter knowledge.
BotChat: Evaluating LLMs’ Capabilities of Having Multi-Turn Dialogues (2024.findings-naacl)

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Challenge: Modern Large Language Models (LLMs) facilitate high-quality, multi-turn dialogues with humans, but human-based evaluation of such a capability requires substantial manual effort.
Approach: They propose to evaluate LLMs' ability to emulate human-like, multi-turn conversations using an LLM-centric approach.
Outcome: The proposed model emulates human-like, multi-turn conversations using an LLM-centric approach.
QADYNAMICS: Training Dynamics-Driven Synthetic QA Diagnostic for Zero-Shot Commonsense Question Answering (2023.findings-emnlp)

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Challenge: Existing approaches to QA fine-tune language models on QA pairs constructed from CommonSense Knowledge Bases (CSKBs) however, current QA synthesis protocols introduce noise from the CSKB and generate ungrammatical questions and false negative options, which impede the model’s ability to generalize.
Approach: They propose a framework to analyze the training dynamics of each QA pair at both the question level and option level, discarding machine-detectable artifacts and mislabeled or false-negative options.
Outcome: The proposed framework outperforms baseline approaches while using only 33% of the synthetic data.
RAAMove: A Corpus for Analyzing Moves in Research Article Abstracts (2024.lrec-main)

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Challenge: RAAMove is a comprehensive multi-domain corpus dedicated to the annotation of move structures in Research Article (RA) abstracts.
Approach: They propose a multi-domain corpus dedicated to the annotation of move structures in RA abstracts.
Outcome: The proposed corpus is based on a human-annotated dataset and a BERT-based model to verify its effectiveness.
Controlled Text Generation Using Dictionary Prior in Variational Autoencoders (2022.findings-acl)

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Challenge: Variational autoencoders (VAEs) have been widely applied in text generation tasks, but they suffer from insufficient representation capacity and poor controllability.
Approach: They propose a data-driven prior that has expressivity and controllability.
Outcome: The proposed prior enjoys expressivity and controllability and can be used in language modeling and controlled text generation.
TCPO: Thought-Centric Preference Optimization for Effective Embodied Decision-making (2025.emnlp-main)

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Challenge: Existing post-SFT methods for embodied AI are constrained by sparse rewards and action-only optimization, resulting in low sample efficiency, poor consistency, and model degradation.
Approach: They propose to integrate Thought-Centric Preference Optimization (TCPO) into embodied decision-making by transforming sparse reward signals into richer step sample pairs.
Outcome: The proposed approach achieves an average success rate of 26.67% in the ALFWorld environment, and a 6% improvement over RL4VLM.
SynC-LLM: Generation of Large-Scale Synthetic Circuit Code with Hierarchical Language Models (2025.emnlp-main)

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Challenge: Recent years, AI-assisted integrated circuit design methods have shown great potential in boosting IC design efficiency. however, this emerging technique is limited by the serious scarcity of publicly accessible large-scale circuit design data, which are mostly private IPs owned by semiconductor companies.
Approach: They propose a hierarchical framework that exploits LLM's ability to generate new large-scale synthetic digital circuits by learning sequential logic skeletons and annotating function descriptions.
Outcome: The proposed framework generates large-scale synthetic circuits that are valid and fully functional, and can significantly improve AI models’ performance in multiple IC design tasks.
Unifying Language Agent Algorithms with Graph-based Orchestration Engine for Reproducible Agent Research (2025.acl-demo)

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Challenge: Language agents powered by large language models (LLMs) have demonstrated remarkable capabilities in understanding, reasoning, and executing complex tasks.
Approach: They propose a flexible framework that addresses engineering overhead and insufficient evaluation frameworks for fair comparison.
Outcome: The proposed framework simplifies language agent development and establishes a foundation for reproducible agent research.
Task-Aware Specialization for Efficient and Robust Dense Retrieval for Open-Domain Question Answering (2023.acl-short)

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Challenge: Existing dense retrieval models are parameter-inefficient and underperform sparse counterparts.
Approach: They propose a task-aware specialization for dEnse Retrieval architecture that enables parameter sharing by interleaving shared and specialized blocks in a single encoder.
Outcome: The proposed architecture surpasses BM25 on questions and passages using 60% of the parameters as bi-encoder dense retrievers.
A Simple and Effective Method to Improve Zero-Shot Cross-Lingual Transfer Learning (2022.coling-1)

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Challenge: Existing zero-shot cross-lingual transfer methods rely on parallel corpora or bilingual dictionaries . however, its effect is limited by the gap between embedding clusters of different languages .
Approach: They propose Embedding-Push, Attention-Pull, and Robust targets to transfer English embeddings to virtual multilingual embedders without semantic loss.
Outcome: Experimental results show that the proposed method outperforms existing methods on cross-lingual tasks and can achieve a better multilingual alignment.
Rethinking the Role of Prompting Strategies in LLM Test-Time Scaling: A Perspective of Probability Theory (2025.acl-long)

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Challenge: Recent studies have shown that scaling test-time compute can also effectively improve reasoning.
Approach: They propose a probabilistic method to efficiently predict scaling performance and identify the best prompting strategy under large sampling times.
Outcome: The proposed method significantly improves the scaling performance of majority voting on large language models.
Ouroboros: Generating Longer Drafts Phrase by Phrase for Faster Speculative Decoding (2024.emnlp-main)

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Challenge: Speculative decoding is a widely used method that accelerates the generation process of large language models (LLMs) drafting efficiency has become a bottleneck in the final speedup of speculative drafting, therefore generating longer drafts at less cost can lead to better speedup.
Approach: They propose a method that uses existing model to drafting and target LLM to verify draft in a low-cost parallel manner.
Outcome: The proposed method can achieve speedups of up to 2.4 over speculative decoding and 3.9 over vanilla decoding without fine-tuning draft and target models.
SciExplore: Evaluating Autonomous Agents from Scientific Navigation to Information Integration (2026.findings-acl)

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Challenge: Existing benchmarks emphasize general-domain retrieval or static scientific question answering . SciExplore focuses on scientific database navigation, ambiguous literature retrieval, missing reference completion, and cross-source structured knowledge synthesis tasks.
Approach: They propose a benchmark to evaluate scientific information-seeking and reasoning capabilities of LLMs and agents.
Outcome: The new benchmark assesses the capabilities of state-of-the-art LLMs and agents in scientific research workflows.
Reinforcement Learning on Pre-Training Data (2026.acl-long)

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Challenge: Recent progress in large language models is driven by scaling of training compute through pre-training with nexttoken prediction (NTP) or post-training (RL) Pre-training using NTP enables models to acquire extensive knowledge and skills from general data, but it suffers from data inefficiency and catastrophic forgetting in continual learning settings.
Approach: They propose to scale training compute through pre-training with next-token prediction (NTP) or post-training by scaling reinforcement learning (RL) to improve learning from general data.
Outcome: Experiments on multiple benchmarks and models show that the proposed approach improves continual pre-training and provides a strong foundation for post-training on Qwen3-8B-Base.
Audio MultiChallenge: A Multi-Turn Evaluation of Spoken Dialogue Systems on Natural Human Interaction (2026.acl-long)

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Challenge: End-to-end (E2E) spoken dialogue systems are replacing cascaded pipelines for voice-based human-AI interaction. Existing benchmarks evaluate these systems on synthetic speech and single-turn tasks, leaving multi-turn conversational ability underexplored.
Approach: They propose an open-source benchmark to evaluate spoken dialogue systems under natural multi-turn interaction patterns.
Outcome: The proposed model fails on the highest-performing model with 54.65% pass rate.
AbsPyramid: Benchmarking the Abstraction Ability of Language Models with a Unified Entailment Graph (2024.findings-naacl)

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Challenge: Existing language models only touch nouns or verbs within simplified events or specific domains.
Approach: They propose an entailment graph that collects abstract knowledge for 3 components of diverse events to comprehensively evaluate the abstraction ability of language models.
Outcome: The proposed benchmark improves LLMs across two previous abstraction tasks.
Neural Parameter Search for Slimmer Fine-Tuned Models and Better Transfer (2025.acl-long)

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Challenge: Foundational models and their checkpoints have advanced deep learning, boosting performance across applications.
Approach: They propose a method for pruning fine-tuned models by calculating differences between them and original model.
Outcome: The proposed method can improve performance across vision, NLP, and multi-modal benchmarks.
MathCanvas: Intrinsic Visual Chain-of-Thought for Multimodal Mathematical Reasoning (2026.acl-long)

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Challenge: Existing approaches to visual chain-of-thought are limited by external tools or fail to generate high-fidelity diagrams.
Approach: They propose a framework to enable large multimodal models with VCoT capabilities . they pre-train a model on a 15.2M-pair corpus and teach it how to leverage visual aids .
Outcome: The proposed framework unlocks complex, human-like visual reasoning in large language models . it pre-trains the model on a 15.2M-pair corpus and fine-tunes it on MathCanvas-Instruct .
T2I-ReasonBench: Benchmarking Reasoning-Informed Text-to-Image Generation (2026.findings-acl)

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Challenge: Text-to-image (T2I) generative models have demonstrated exceptional capability in synthesizing high-quality images from textual prompts.
Approach: They propose a benchmark to explore the knowledge-driven reasoning capabilities of T2I models.
Outcome: The proposed benchmark examines the knowledge-driven reasoning capabilities of T2I models.
Controllable LLM Reasoning via Sparse Autoencoder-Based Steering (2026.acl-long)

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Challenge: Existing methods struggle to control fine-grained reasoning strategies due to conceptual entanglement in LRMs’ hidden states.
Approach: They propose to decompose strategy-entangled hidden states into a disentangled feature space by using Sparse Autoencoders to identify the few strategy-specific features from the vast pool of SAE features.
Outcome: The proposed method outperforms existing methods by 15% in control effectiveness.
Gracefully Filtering Backdoor Samples for Generative Large Language Models without Retraining (2025.coling-main)

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Challenge: Existing backdoor defense methods are ineffective for generative large language models . generative LLMs output sequences of high-dimensional token logits instead of low-dimensional classification logits .
Approach: They propose a method that leverages sample-wise gradients to identify backdoor samples without retraining LLMs.
Outcome: The proposed method outperforms baselines significantly in identifying backdoor samples without retraining LLMs.
TransGEC: Improving Grammatical Error Correction with Translationese (2023.findings-acl)

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Challenge: Experimental results show that data augmentation improves accuracy over strong baselines.
Approach: They propose to use translationese as input for GEC data augmentation to overcome stylistic discrepancies . they propose to obtain human-translated texts with a more similar style to non-native texts .
Outcome: The proposed method improves correction accuracy over strong baselines on four GEC benchmarks.
HierDiffuse: Progressive Diffusion for Robust Interest Fusion in CTR Prediction (2025.emnlp-industry)

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Challenge: Existing approaches fuse long-term behavioral profiles and short-term interactions, suffering from representational misalignment and noise in transient signals.
Approach: They propose a framework that redefines interest fusion as a hierarchical denoising process through diffusion models.
Outcome: The proposed framework redefines interest fusion as a hierarchical denoising process through diffusion models.
Elevating Legal LLM Responses: Harnessing Trainable Logical Structures and Semantic Knowledge with Legal Reasoning (2025.naacl-long)

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Challenge: Existing approaches to large language models focus on semantic similarity, neglecting the intricate logical structures and reasoning essential for addressing complex legal issues.
Approach: They propose a Logical-Semantic Integration Model (LSIM) that bridges semantic and logical coherence and a supervised framework that integrates semantic features with in-context learning.
Outcome: The proposed framework significantly improves accuracy and reliability on a real-world legal QA dataset.
d-TreeRPO: Towards More Reliable Policy Optimization for Diffusion Language Models (2026.acl-long)

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Challenge: Existing RL methods suffer from reliability bottlenecks due to reward sparsity and intractable computations . d-TreeRPO provides fine-grained and verifiable step-wise reward signals .
Approach: They propose a reliable reinforcement learning framework for diffusion large language models that leverages tree-structured rollouts and bottom-up advantage computation based on verifiable outcome rewards.
Outcome: The proposed framework outperforms baseline models and achieves significant improvements across reasoning benchmarks.
OPT-BENCH: Evaluating the Iterative Self-Optimization of LLM Agents in Large-Scale Search Spaces (2026.findings-acl)

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Challenge: Large Language Models (LLMs) have demonstrated remarkable capabilities in reasoning and tool use, but their ability to continuously refine solutions in response to dynamic environmental feedback remains underexplored.
Approach: They propose a benchmark to evaluate self-improvement capabilities in large-scale search spaces by combining 20 machine learning tasks with 10 classic NP-hard problems.
Outcome: The proposed framework emulates human-like cognitive adaptation and operates via a general perception–memory–reasoning loop, iteratively refining solutions based on environmental feedback.
KELE: A Multi-Agent Framework for Structured Socratic Teaching with Large Language Models (2025.findings-emnlp)

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Challenge: Socratic teaching places high demands on teachers’ expertise and real-time feedback capabilities, making it difficult to scale in large educational settings.
Approach: They propose a multi-agent framework for structured Socratic teaching with LLMs that integrates a structured SocRule and a consultant-teacher collaborative teaching mechanism.
Outcome: The proposed framework outperforms existing LLMs in natural language generation and dialogue comprehension in the classroom.
Benchmarking Long-Context Language Models on Long Code Understanding (2025.acl-long)

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Challenge: Currently, long-context language models are limited by the lack of a rigorous evaluation framework for long code understanding.
Approach: They propose to use a long code understanding benchmark LongCodeU to evaluate LCLMs' long code comprehension ability for practical applications.
Outcome: The proposed benchmarks show that current LCLMs are limited in their long code understanding ability, particularly when the long code length is greater than 32K, falling far short of their claimed 128K to 1M context windows.
TOAD: Task-Oriented Automatic Dialogs with Diverse Response Styles (2024.findings-acl)

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Challenge: Existing datasets for Task-Oriented Dialogs (TOD) lack consideration for adaptive response styles and neglect to simulate interactions with app contexts like calendars or alarms.
Approach: They propose to generate an annotated task-oriented dialog dataset and an automatic pipeline to generate it.
Outcome: The proposed dataset provides a variety of system response styles and provides verbose or non-verbal responses.
Context-Aware Adapter Tuning for Few-Shot Relation Learning in Knowledge Graphs (2024.emnlp-main)

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Challenge: Existing methods to predict instances for missing relations on knowledge graphs are limited by their limited training examples.
Approach: They propose a context-aware adapter for few-shot relation learning in KGs . they propose tunable relation adaptation and contextual information for each relation .
Outcome: Experiments on three benchmark KGs validate the superiority of RelAdapter over state-of-the-art methods.
A Survey on Natural Language Processing for Programming (2024.lrec-main)

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Challenge: Natural language processing for programming is a field of NLP and software engineering . it is used to assist programming, and is increasingly prevalent for its effectiveness in improving productivity.
Approach: They propose to use NLP techniques to assist programming by obtaining a structure-based representation and a functionality-oriented algorithm.
Outcome: The proposed approach could relieve developers from laborious work while improving efficiency for non-professional users.
Deep Differential Amplifier for Extractive Summarization (2021.acl-long)

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Challenge: Existing approaches to extract summary from document with a disproportionate ratio of selected and unselected sentences are far from human performance.
Approach: They propose a model that rebalances sentence-level extractive summarization by amplifying the semantic difference between each sentence and all other sentences and applying the residual unit as the second item of the differential amplifier to deepen the architecture.
Outcome: The proposed model performs competitively against state-of-the-art methods on two benchmark datasets.
Cross-Thought for Sentence Encoder Pre-training (2020.emnlp-main)

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Challenge: Existing models to pretrain sentence encoders with large unlabeled corpus are lacking in linguistic information retrieval.
Approach: They propose a novel approach to pre-training sequence encoder using transformers . they propose to train a Transformer-based sequence encoded over a large set of short sequences based on a set of masked words .
Outcome: The proposed approach outperforms state-of-the-art encoders on hotpotQA by improving intermediate information retrieval performance.
Safety in Large Reasoning Models: A Survey (2025.findings-emnlp)

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Challenge: Large Reasoning Models (LRMs) have a high level of advanced reasoning capabilities, but they are vulnerable and vulnerable.
Approach: This paper presents the first comprehensive survey of Large Reasoning Models . it explores the new safety risks, attacks, and defense strategies specific to LRMs based on reasoning .
Outcome: The proposed study examines the safety and security risks of large reasoning models.
MACSum: Controllable Summarization with Mixed Attributes (2023.tacl-1)

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Challenge: Existing work on controllable summarization with mixed attributes lacks designated annotations.
Approach: They propose a human-annotated summarization benchmark for controllable summarizing with mixed attributes based on news and dialogue sources .
Outcome: The proposed dataset contains human-annotated summarization datasets with mixed attributes . hard prompt models yield the best performance on most metrics and human evaluations . mixed-attribute control is still challenging for summarizing tasks .
Multi-stage Distillation Framework for Cross-Lingual Semantic Similarity Matching (2022.findings-naacl)

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Challenge: Existing studies have shown that cross-lingual knowledge distillation can improve the performance of pre-trained models for cross-linguistic similarity matching tasks.
Approach: They propose a multi-stage distillation framework for constructing a small-size but high-performance cross-lingual model using contrastive learning, bottleneck, and parameter recurrent strategies.
Outcome: The proposed model can compress the size of XLM-R and MiniLM by more than 50% while the performance is only reduced by about 1%.
Knowledge-Guided Cross-Topic Visual Question Generation (2024.lrec-main)

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Challenge: Existing methods for visual question generation use answers or question types as constraints to generate questions.
Approach: They propose a knowledge-guided cross-topic visual question generation task to generate unseen topics in cross-section scenarios.
Outcome: The proposed model outperforms baselines and can generate unseen topic-related questions in cross-topic scenarios.
Can MLLMs Understand the Deep Implication Behind Chinese Images? (2025.acl-long)

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Challenge: MLLMs perform poorly on traditional culture images, indicating limitations in understanding high-level semantics and lacking a deep knowledge base of Chinese traditional culture.
Approach: They propose to use Chinese images to assess MLLMs' higher-order perception and understanding of Chinese visual content.
Outcome: The proposed model incorporates images that represent Chinese traditional culture, such as famous Chinese traditional paintings, to ensure the authenticity of the Chinese context.
Not All Voices Are Rewarded Equally: Probing and Repairing Reward Models across Human Diversity (2025.findings-emnlp)

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Challenge: Using real-world datasets, we conduct the most comprehensive study to date, auditing various state-of-the-art reward models across nine sensitive attributes, including age, gender, ethnicity, etc.
Approach: They propose a method to mitigate group disparities in reward modeling by using real-world data.
Outcome: The proposed method is based on a population-based dataset with nine demographic attributes, including gender, ethnicity, age, gender, and ethnicity.
Toolscaler: Scalable Generative Tool Calling via Structure-Aware Semantic Tokenization (2025.findings-emnlp)

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Challenge: Extensive experiments demonstrate the effectiveness of SGTC across various tasks.
Approach: They propose a generative tool invocation framework that introduces structure-aware semantic tokenization to encode tools as discrete code sequences.
Outcome: The proposed framework reduces the size of the representation space and underutilizes collaborative signals among tools in downstream tasks.
Mere Contrastive Learning for Cross-Domain Sentiment Analysis (2022.coling-1)

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Challenge: Existing approaches to cross-domain sentiment analysis are labor-intensive and time-consuming.
Approach: They propose a modified contrastive objective with in-batch negative samples to allow sentence representations from the same class to be pushed closer while those from the different classes become further apart in the latent space.
Outcome: The proposed model can achieve state-of-the-art in cross-domain and multi-domain sentiment analysis tasks while transferring knowledge learned in the source domain to the target domain.
Mathematical Word Problem Generation from Commonsense Knowledge Graph and Equations (2021.emnlp-main)

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Challenge: Existing models for generating mathematical word problems are lacking in educational assessment.
Approach: They propose an end-to-end neural model to generate diverse mathematical word problems from commonsense knowledge graph and equations.
Outcome: The proposed model outperforms the SOTA models in terms of evaluation metrics and topic relevance.
EmoRes: Toward Adaptive Psychological Support via User-Agnostic Benchmark and Topic-Mining Agent (2026.findings-acl)

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Challenge: Large language models generate fragmented and emotionally inconsistent dialogues lacking the therapeutic structure necessary for reliable assessment.
Approach: They propose a framework that boosts psychological reasoning via a Topic-Mining Emotional Agent and a multi-perspective Self-Reflection Agent.
Outcome: The proposed framework improves topic continuity, emotional coherence, and clinical interpretability over baselines and validated by ablation studies and human evaluations.
GUICourse: From General Vision Language Model to Versatile GUI Agent (2025.acl-long)

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Challenge: Graphical User Interfaces (GUIs) are a pivotal medium for human-computer interaction.
Approach: They propose a series of datasets for training visual-based GUI agents using general VLMs.
Outcome: The proposed GUICourse datasets show that even a small-sized GUI agent performs better on GUI tasks.
A User-Centered, Interactive, Human-in-the-Loop Topic Modelling System (2023.eacl-main)

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Challenge: Recent research has demonstrated the value of user feedback, but there are still issues to consider, such as the difficulty in tracking changes and comparing different models.
Approach: They propose a human-in-the-loop topic modeling system that integrates users’ knowledge into the modelling process, enabling them to refine the model iteratively.
Outcome: The proposed system is based on a series of user studies to assess its performance in progressively more realistic applications.
Beyond Completion: A Foundation Model for General Knowledge Graph Reasoning (2025.findings-acl)

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Challenge: Existing foundation models for general knowledge graph reasoning have focused on their structural aspects, with most efforts restricted to in-KG tasks.
Approach: They propose a conditional encoding architecture that bridges the gap between textual and structural modalities, enabling seamless integration.
Outcome: The proposed model outperforms baseline models on 28 datasets and is generalized to out-of-KG tasks.
AbsInstruct: Eliciting Abstraction Ability from LLMs through Explanation Tuning with Plausibility Estimation (2024.acl-long)

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Challenge: Existing work shows that LLMs are deficient in abstract ability, and how to improve it remains unexplored.
Approach: They propose a framework AbsInstruct to enhance LLMs’ abstract ability through instruction tuning.
Outcome: The proposed framework can enhance LLMs’ abstraction ability with strong generalization performance while maintaining their general instruction-following abilities.
Hierarchical Graph Network for Multi-hop Question Answering (2020.emnlp-main)

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Challenge: Existing multi-hop question answering models focus on multi-level reasoning across multiple documents or paragraphs.
Approach: They propose a hierarchical graph network that aggregates clues from scattered texts . they use a set of contextual encoders to initialize nodes on different levels of granularity .
Outcome: The proposed model outperforms existing multi-hop QA approaches on the HotpotQA benchmark.
Vision-Language Introspection: Mitigating Overconfident Hallucinations in MLLMs via Interpretable Bi-Causal Steering (2026.acl-long)

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Challenge: Existing approaches to overcome object hallucination are limited . Existing mitigations include costly retraining and a training-free inference framework .
Approach: They propose a training-free inference framework that simulates a metacognitive self-correction process.
Outcome: The proposed framework reduces object hallucination rates by 12.67% on MMHal-Bench and improves accuracy by 5.8% on POPE.
From Language to Driving: A Dual-Loop SLM-Enhanced Framework for Multi-Planner Scheduling via a Domain-Specific Language (2026.acl-long)

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Challenge: Recent large language model-based AD research offers new avenues to address this challenge.
Approach: They propose a small language model (SLM) for high-level semantic reasoning and schedule generation, while an inner loop performs low-level, high-frequency schedule execution and vehicle control.
Outcome: The proposed framework improves instruction completion rates while maintaining high safety and compliance relative to multiple baselines.
Joint Pre-Encoding Representation and Structure Embedding for Efficient and Low-Resource Knowledge Graph Completion (2024.emnlp-main)

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Challenge: Existing knowledge graph completion models require longer training and inference times as well as increased memory usage.
Approach: They propose to encode textual descriptions into semantic representations before training and integrate structural embedding with pre-encoded semantic description to improve model's prediction performance on 1-N relations.
Outcome: The proposed model increases inference speed by 30x and reduces training memory by approximately 60% on the WN18RR and UMLS datasets.
Universal Information Extraction with Meta-Pretrained Self-Retrieval (2023.findings-acl)

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Challenge: Existing methods for IE are task-specific, resulting in specialized and isolated approaches for different tasks.
Approach: They propose a method to retrieve task-specific knowledge from pretrained language models to enhance universal IE by using a Meta-Pretraining Algorithm.
Outcome: The proposed method achieves the new state-of-the-art on 4 IE tasks, 12 datasets under fully-supervised, low-resource and few-shot scenarios.
A Split-and-Recombine Approach for Follow-up Query Analysis (D19-1)

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Challenge: Context-dependent semantic parsing has proved to be an important but challenging task.
Approach: They propose to perform follow-up query analysis to restate context-dependent queries with contextual information.
Outcome: The proposed approach outperforms the state-of-the-art by nearly 8% on the FollowUp dataset . the extensibility of STAR on the SQA dataset is also promising .
CLIO: Role-interactive Multi-event Head Attention Network for Document-level Event Extraction (2022.coling-1)

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Challenge: Existing methods for document-level event extraction struggle due to two intrinsic challenges: nested arguments and multiple events.
Approach: They propose a role-interactive multi-event head attention network to solve two challenges . they map different events to multiple subspaces and then determine whether the current event exists .
Outcome: The proposed model improves on two widely used DEE datasets on the Internet.
QuASAR: A Question-Driven Structure-Aware Approach for Table-to-Text Generation (2025.acl-long)

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Challenge: Existing methods for table-to-text generation fail to capture the structure of tabular data or rely on complex attention mechanisms, limiting their applicability.
Approach: They propose a question-driven self-supervised approach to enhance the model’s structural perception and representation capabilities by focusing on structure-related queries.
Outcome: The proposed model improves its model's structural perception and representation capabilities by guiding it to capture local and global table structures.
Forge: Quality-Aware Reinforcement Learning for NP-Hard Optimization in LLMs (2026.findings-acl)

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Challenge: Existing benchmarks focus on correctness, overlooking optimality . large language models excel at math, coding, logic and puzzles .
Approach: They propose a framework for training and evaluating Large Language Models on NP-hard optimization problems through quality-aware RLVR.
Outcome: The proposed framework outperforms existing benchmarks on math, coding, logic and puzzles.
ChartThinker: A Contextual Chain-of-Thought Approach to Optimized Chart Summarization (2024.lrec-main)

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Challenge: Existing methods for chart summarization lack visual-language matching and reasoning ability.
Approach: They propose a method which synthesizes deep analysis based on chains of thought and strategies of context retrieval to improve the logical coherence and accuracy of the generated summaries.
Outcome: The proposed method outperforms 8 state-of-the-art models over 7 evaluation metrics and can significantly reduce time and cognitive resources required.
Effective Long-Context Scaling of Foundation Models (2024.naacl-long)

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Challenge: Large language models (LLMs) are rapidly deployed and continue to evolve through scaling.
Approach: They propose a method to train strong long-context LLMs that are capable of utilizing massive context windows of up to 32,000 tokens.
Outcome: The proposed model can surpass gpt-3.5-turbo-16k's overall performance on long-context benchmarks with a cost-effective instruction tuning procedure that is free of expensive annotations.
Do Vision-Language Models Have Internal World Models? Towards an Atomic Evaluation (2025.findings-acl)

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Challenge: Recent studies have evaluated and shown limitations in specific capabilities such as visual understanding, but a systematic evaluation of VLMs’ fundamental WM abilities remains absent.
Approach: They propose a framework that assesses perception and prediction to provide an atomic evaluation of VLMs as WMs.
Outcome: The proposed framework assesses perception and prediction abilities on 15 latest VLMs and compares them to human-level models.
Towards Robust Temporal Activity Localization Learning with Noisy Labels (2024.lrec-main)

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Challenge: Existing methods for temporal activity localization are expensive and difficult to satisfy due to subjective labeling.
Approach: They propose a new TAL setting where a TAL model should be robust to mixed training data with noisy moment boundaries.
Outcome: The proposed method is significantly more robust to noisy training data than existing methods.
Disentangling Reasoning Logic to Resolve Explicit Knowledge Conflicts (2026.acl-long)

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Challenge: Existing approaches to resolve explicit knowledge conflicts are based on semantic decoding and auxiliary embedding.
Approach: They propose a framework that adjudicates conflicts by structuring the underlying logic.
Outcome: Experiments show that the proposed framework improves on existing models.
MIND: Multimodal Shopping Intention Distillation from Large Vision-language Models for E-commerce Purchase Understanding (2024.emnlp-main)

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Challenge: Existing methods for acquiring large-scale intentions generate product-centric intentions without product images and incur high costs for scalability.
Approach: They propose a multimodal framework that allows Large Vision-Language Models to infer purchase intentions from multimodal product metadata and prioritize human-centric ones.
Outcome: The proposed framework shows that it is robust to different prompts and superior to previous methods.
Redundancy Principles for MLLMs Benchmarks (2025.acl-long)

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Challenge: Rapid growth of Multi-modality Large Language Models has led to significant redundancy among benchmarks.
Approach: They propose a framework to improve MLLM benchmark design by identifying redundancy at three levels: dimension, instance, and cross-benchmark redundancies.
Outcome: The proposed framework streamlines evaluations and enhances reliability.
Debiasing LLMs by Masking Unfairness-Driving Attention Heads (2026.findings-acl)

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Challenge: Existing work probes when biased outputs appear, but gives little insight into the mechanisms that generate them, leaving existing mitigations largely fragile.
Approach: They propose a lightweight debiasing framework that detects bias heads and selectively masks only those heads that activate under DA and CoT.
Outcome: The proposed framework reduces unfairness by 391.9%- 534.5% in both one- and two-turn dialogues.
IntentionQA: A Benchmark for Evaluating Purchase Intention Comprehension Abilities of Language Models in E-commerce (2024.findings-emnlp)

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Challenge: Existing approaches that distill intentions from LMs fail to generate meaningful and human-centric intentions applicable in real-world E-commerce contexts.
Approach: They propose a double-task multiple-choice question answering benchmark to evaluate LMs' comprehension of purchase intentions in E-commerce.
Outcome: The proposed benchmark consists of 4,360 carefully curated problems across three difficulty levels, constructed using an automated pipeline to ensure scalability on large E-commerce platforms.
EAVE: Efficient Product Attribute Value Extraction via Lightweight Sparse-layer Interaction (2024.findings-emnlp)

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Challenge: Existing methods to extract product attribute value require multiple extractions to obtain all corresponding values.
Approach: They propose an Efficient product Attribute Value Extraction approach using lightweight sparse-layer interaction.
Outcome: The proposed method achieves significant efficiency gains with neutral or marginal loss in performance when the context is long and number of attributes is large.
TinyBERT: Distilling BERT for Natural Language Understanding (2020.findings-emnlp)

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Challenge: Pre-trained language models are computationally expensive and difficult to efficiently execute on resource-restricted devices.
Approach: They propose a Transformer distillation method that performs Transformer distillations at pre-training and task-specific learning stages.
Outcome: The proposed method accelerates inference and reduces model size while maintaining accuracy.
QuantumQA: Enhancing Scientific Reasoning via Physics-Consistent Dataset and Verification-Aware Reinforcement Learning (2026.acl-long)

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Challenge: Large language models lack reliability in scientific domains that require strict adherence to physical constraints.
Approach: They propose a large-scale dataset constructed via a task-adaptive strategy and a hybrid verification protocol that combines deterministic solvers with semantic auditing to guarantee scientific rigor.
Outcome: The proposed model outperforms baselines and general-purpose preference models and is competitive with proprietary models.
Towards Better Entity Linking with Multi-View Enhanced Distillation (2023.acl-long)

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Challenge: Entity linking is a fundamental task in Natural Language Processing (NLP), connecting mentions within unstructured contexts to their corresponding entities in a Knowledge Base (KB).
Approach: They propose a dual-encoder framework that can efficiently match mentions to two-encoding frameworks by a global-view.
Outcome: The proposed framework achieves state-of-the-art on several entity linking benchmarks.
Mitigating Hallucinations in LM-Based TTS Models via Distribution Alignment Using GFlowNets (2025.emnlp-main)

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Challenge: Existing mitigation strategies for Text-to-Speech systems require excessive training resources or inference latency.
Approach: They propose a GFlOwNet-guided distribution AlignmenT framework that mitigates hallucinations without relying on massive resources or inference latency.
Outcome: The proposed framework reduces over 50% character error rates and lowers uncertainty by up to 58% on challenging test cases.
Towards Scalable Lightweight GUI Agents via Multi-role Orchestration (2026.findings-acl)

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Challenge: Advanced GUI agents suffer from prohibitive deployment costs on resource-constrained devices.
Approach: They propose a lightweight GUI agent with GUI-specific knowledge and task scalability . LAMO-3B supports monolithic execution and MAS-style orchestration .
Outcome: The proposed GUI agent LAMO-3B supports monolithic execution and MAS-style orchestration.
CAR: Conceptualization-Augmented Reasoner for Zero-Shot Commonsense Question Answering (2023.findings-emnlp)

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Challenge: Existing approaches to zero-shot commonsense question answering use incomplete CSKBs . lack of human annotations makes sampled negative examples potentially uninformative and contradictory.
Approach: They propose a framework that abstracts a commonsense knowledge triple to many higher-level instances, which increases the coverage of the CSKB and expands the ground-truth answer space.
Outcome: Experiments show that CAR can generalize to zero-shot commonsense scenarios . lack of human annotations makes sampled negative examples potentially uninformative and contradictory.
Leveraging Adjective-Noun Phrasing Knowledge for Comparison Relation Prediction in Text-to-SQL (D19-1)

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Challenge: Existing models for text-to-SQL do not explicitly introduce common knowledge to address comparison relations.
Approach: They propose to leverage adjective-noun phrasing knowledge mined from the web to predict comparison relations in text-to-SQL.
Outcome: The proposed approach improves on the original and re-split Spider datasets on comparison relation prediction.
CANDLE: Iterative Conceptualization and Instantiation Distillation from Large Language Models for Commonsense Reasoning (2024.acl-long)

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Challenge: Existing approaches to generalize commonsense reasoning lack instantiated knowledge and require pre-built concept taxonomies and annotations.
Approach: They propose a framework that iteratively performs contextualized conceptualization and instantiation over commonsense knowledge bases by instructing large language models to generate both types of knowledge with critic filtering.
Outcome: Empirical results show that distilling CANDLE on student models provides benefits across three downstream tasks.
Exploring the Potential of ChatGPT on Sentence Level Relations: A Focus on Temporal, Causal, and Discourse Relations (2024.findings-eacl)

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Challenge: Recent studies have demonstrated ChatGPT's remarkable few-shot, even zero-shot learning abilities when compared to other models.
Approach: They quantitatively evaluate the performance of ChatGPT on inter-sentential relations such as temporal relations, causal relations, and discourse relations.
Outcome: The proposed model performs well on temporal relations, causal relations, and discourse relations.
MQuinE: a Cure for “Z-paradox” in Knowledge Graph Embedding (2024.emnlp-main)

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Challenge: Existing knowledge graph embedding models suffer from Z-paradox, a deficiency in expressiveness . Embedding-based models map each entity and relation into a vector or matrix .
Approach: They propose a new knowledge graph embedding model that does not suffer from Z-paradox while preserves strong expressiveness to model various relation patterns with theoretical justification.
Outcome: The proposed model outperforms existing models on link prediction tasks while maintaining strong expressiveness.
Proximity-Based Multi-Turn Optimization: Practical Credit Assignment for LLM Agent Training (2026.acl-industry)

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Challenge: Existing group-based policy optimization methods rely on statistical deviation within discrete batches, misallocating credit when task difficulty fluctuates.
Approach: They propose a framework for multi-turn LLM agents that integrates global context . they propose GRPO, which integrates success-rate-aware modulation and proximity-based soft aggregation .
Outcome: The proposed framework yields performance gains over existing baselines with negligible computational cost.
SimpleDeepSearcher: Deep Information Seeking via Web-Powered Reasoning Trajectory Synthesis (2025.findings-emnlp)

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Challenge: Existing approaches to deep search training lack high-quality training trajectories, prohibitive computational costs and lack of high-fidelity training data.
Approach: They propose a framework that synthesizes high-quality training data by simulating real user interactions in live web search environments.
Outcome: The proposed framework synthesizes high-quality training data by simulating user interactions in live web search environments.
COIG-CQIA: Quality is All You Need for Chinese Instruction Fine-tuning (2025.findings-naacl)

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Challenge: Existing datasets for Chinese instruction tuning are not well-aligned with Chinese users’ interaction patterns.
Approach: They propose to use Chinese instruction tuning datasets to improve instruction fine-tuning for Chinese users.
Outcome: The proposed dataset shows that Chinese models achieve competitive performance in diverse benchmarks.
Task Compass: Scaling Multi-task Pre-training with Task Prefix (2022.findings-emnlp)

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Challenge: Existing studies show that multi-task learning with large-scale supervised tasks suffers from negative effects across tasks.
Approach: They propose a task prefix guided multi-task pre-training framework to explore the relationships among tasks.
Outcome: The proposed model can be used as a foundation backbone for a wide range of tasks and as augmentation tool for data augmentation with complementary tasks.
On-the-fly Denoising for Data Augmentation in Natural Language Understanding (2024.findings-eacl)

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Challenge: Existing methods to improve data augmentation performance may introduce noisy data that impairs training.
Approach: They propose an on-the-fly denoising technique that learns from soft augmented labels provided by an organic teacher model trained on the cleaner original dataset.
Outcome: The proposed method improves on text classification and question-answering tasks on general augmentation techniques and prevents overfitting on noisy labels.
LIME: Less Is More for MLLM Evaluation (2025.findings-acl)

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Challenge: Existing MLLM benchmarks and unified evaluation frameworks cannot accurately and efficiently reflect the ability of MLMLs.
Approach: They propose a semi-automated benchmark curated using a pipeline that filters out uninformative samples and eliminates answer leakage by focusing on tasks that require image-based understanding.
Outcome: The proposed benchmark reduces the number of samples by 76% and evaluation time by 77% while it can more effectively distinguish different models’ abilities.
Exploring the Hidden Reasoning Process of Large Language Models by Misleading Them (2025.findings-emnlp)

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Challenge: Existing large language models can perform abstract reasoning tasks but are they actually engaging in rule-based reasoning beyond mere memorization?
Approach: They propose a method to examine whether large language models perform abstract reasoning . they fine-tune the model to learn those contradictory rules and assess its generalization ability .
Outcome: The proposed approach examines whether large language models perform abstract reasoning by altering their original understanding of fundamental rules.
OpenRLHF: A Ray-based Easy-to-use, Scalable and High-performance RLHF Framework (2025.emnlp-demos)

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Challenge: Existing RLHF frameworks face inference bottlenecks and complexity barriers restricting their accessibility for newcomers.
Approach: They propose an open-source RLHF framework that can be used to train large language models.
Outcome: The proposed framework achieves superior training efficiency with speedups ranging from 1.22 to 1.68 across different model sizes compared to state-of-the-art frameworks, while requiring significantly fewer lines of code for implementation.
CodeMEM: AST-Guided Adaptive Memory for Repository-Level Iterative Code Generation (2026.findings-acl)

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Challenge: Existing memory management approaches show promise but remain limited by natural language-centric representations.
Approach: They propose an AST-guided dynamic memory management system for repository-level iterative code generation that maintains and updates repository context through AST operations.
Outcome: The proposed system improves instruction following by 12.2% and reduces interaction rounds by 2–3 while maintaining competitive inference latency and token efficiency.
Training Data is More Valuable than You Think: A Simple and Effective Method by Retrieving from Training Data (2022.acl-long)

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Challenge: Experimental results show that REtrieving from the traINing datA only can lead to significant gains on multiple NLG and NLU tasks.
Approach: They propose to retrieve training instances from traINing datA and concatenate them with input to generate output.
Outcome: The proposed method achieves state-of-the-art results on XSum, BigPatent, and CommonsenseQA.

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