Papers by Fan Xu

74 papers
QUITO-X: A New Perspective on Context Compression from the Information Bottleneck Theory (2025.findings-emnlp)

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Challenge: Existing methods for compressing context by removing redundant tokens are inconsistent with the objective of retaining the most important tokens when conditioning on a given query.
Approach: They propose a method that uses information bottleneck theory to compress context . they propose to remove redundant tokens using metrics such as self-information or perplexity .
Outcome: The proposed method achieves a 25% increase in compression rate compared to the state-of-the-art .
IUQ: Interrogative Uncertainty Quantification for Long-Form Large Language Model Generation (2026.acl-long)

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Challenge: Recent approaches to quantify uncertainty in LLMs produce short or constrained answer sets, but many real-world applications require long-form and free-form text generation.
Approach: They propose a framework that leverages inter-sample consistency and intra-sampled faithfulness to quantify the uncertainty in long-form LLM outputs.
Outcome: The proposed framework provides reliable measures of claim-level uncertainty and the model’s faithfulness over two widely used long-form generation datasets.
WW-CSL: A New Dataset for Word-Based Wearable Chinese Sign Language Detection (2024.lrec-main)

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Challenge: Sign language is an effective non-verbal communication mode for the hearingimpaired people.
Approach: They propose a three-form scheme to represent dynamic CSL gestures using a word-based dataset.
Outcome: The proposed framework integrates the local sequential sensor data derived from the wearable-based CSL gestures with the global, fine-grained skeleton representations captured from video-based gestures simultaneously.
CrowdAgent: Multi-Agent Managed Multi-Source Annotation System (2025.emnlp-demos)

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Challenge: Recent approaches to annotate data focus on labeling, but lack holistic process control . a novel system that integrates task assignment, data annotation, and quality/cost management is needed .
Approach: They propose a multi-agent system that integrates task assignment, data annotation, and quality/cost management.
Outcome: The proposed system automates human management by using a collaborative multi-agent system.
HELPD: Mitigating Hallucination of LVLMs by Hierarchical Feedback Learning with Vision-enhanced Penalty Decoding (2024.emnlp-main)

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Challenge: Existing work detects hallucination by directly judging whether an object exists in an image, overlooking the association between the object and semantics.
Approach: They propose a framework that incorporates hallucination feedback at both object and sentence semantic levels to alleviate over 15% of hallucinism.
Outcome: The proposed framework can alleviate over 15% of hallucination even with a marginal degree of training.
PreP-OCR: A Complete Pipeline for Document Image Restoration and Enhanced OCR Accuracy (2025.acl-long)

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Challenge: Existing pipelines that combine document image restoration with semantic-aware post-OCR correction can improve text extraction from degraded images.
Approach: They propose a two-stage pipeline that combines document image restoration with semantic-aware post-OCR correction to enhance both visual clarity and textual consistency.
Outcome: The proposed pipeline reduces character error rates by 63.9-70.3% on 13,831 pages of real historical documents in English, French, and Spanish compared to OCR on raw images.
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 .
MAPS: Motivation-Aware Personalized Search via LLM-Driven Consultation Alignment (2025.acl-long)

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Challenge: Existing personalized product search methods assume that users’ query fully captures their real motivation, but in practice, user's queries do not always articulate the requirements.
Approach: They propose a Motivation-Aware Personalized Search method that embeds queries and consultations into a unified semantic space via LLMs and utilizes a Mixture of Attention Experts (MoAE) to prioritize critical semantics.
Outcome: Extensive experiments on real and synthetic data show that the proposed method outperforms existing methods in retrieval and ranking tasks.
Can We Edit Factual Knowledge by In-Context Learning? (2023.emnlp-main)

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Challenge: In-context knowledge editing (IKE) is a new paradigm for NLP research that can be applied to large language models with tens or hundreds of parameters.
Approach: They propose to use in-context knowledge editing (IKE) without gradient updating to edit factual knowledge without a gradient update.
Outcome: The proposed method achieves a competitive success rate compared to gradient-based methods on GPT-J but with fewer side effects.
iMOVE : Instance-Motion-Aware Video Understanding (2025.findings-acl)

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Challenge: Recent advances in Video Large Language Models have led to rapid development, significantly enhancing the capture of overall video semantics and achieving remarkable performance in general video understanding tasks.
Approach: They propose a large-scale instance-motion-aware video instruction-tuning dataset iMOVE that utilizes Event-awful Spatiotemporal Efficient Modeling to retain informative instance spatiotemporal motion details while maintaining computational efficiency.
Outcome: The proposed model excels in video temporal understanding and general video understanding.
Travel on the ICD Tree: Benchmarking Agentic Reasoning for ICD Coding from Chinese Electronic Medical Records (2026.findings-acl)

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Challenge: Accurate International Classification of Diseases (ICD) coding is crucial for hospital management and healthcare data governance.
Approach: They propose a framework to evaluate ICD coding based on complete EMRs . they use a dataset of 560 real clinical records covering 434 common diseases .
Outcome: The proposed framework explores the capability boundaries of large language models under different paradigms.
Transition-based Directed Graph Construction for Emotion-Cause Pair Extraction (2020.acl-main)

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Challenge: Existing methods to extract emotions and causes from unannotated text are pipelined, causing error propagation.
Approach: They propose to transform a task into a procedure of parsing-like directed graph construction . they propose to generate a directed graph with labeled edges based on a sequence of actions .
Outcome: The proposed method outperforms the state-of-the-art methods by 6.71% (p0.01) in F1 measure.
FinChain: A Symbolic Benchmark for Verifiable Chain-of-Thought Financial Reasoning (2026.acl-long)

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Challenge: Existing benchmarks emphasize final numerical answers while neglecting intermediate reasoning steps.
Approach: They propose a symbolic benchmark for verifiable Chain-of-Thought evaluation in finance . FINCHAIN spans 58 topics across 12 financial domains and three difficulty levels .
Outcome: The proposed benchmark aims to bridge symbolic reasoning and factual verification.
Sparsity-Accelerated Training for Large Language Models (2024.findings-acl)

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Challenge: Large language models (LLMs) have demonstrated proficiency across various NLP tasks but often require additional training, such as continual pre-training and supervised fine-tuning.
Approach: They propose to leverage sparsity in pre-trained LLMs to accelerate training by disregarding computations for unimportant neurons.
Outcome: The proposed framework achieves comparable or superior performance to standard training while significantly accelerating the process.
Diagnosing Failures in Large Language Models’ Answers: Integrating Error Attribution into Evaluation Framework (2025.findings-acl)

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Challenge: Existing evaluation models lack error attribution capability due to their proprietary nature.
Approach: They propose a misattribution framework with 6 primary and 15 secondary categories to facilitate in-depth analysis.
Outcome: The proposed framework is based on a dataset specifically designed for error attribution, along with the corresponding scores and feedback.
Contextual Fine-to-Coarse Distillation for Coarse-grained Response Selection in Open-Domain Conversations (2022.acl-long)

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Challenge: Existing studies focus on coarse-grained response selection in retrieval-based dialogue systems.
Approach: They propose a Contextual Fine-to-Coarse (CFC) distilled model for coarse-grained response selection in open-domain conversations.
Outcome: The proposed model improves over baseline methods on two datasets based on the Reddit comments dump and Twitter corpus compared with baseline methods.
Leveraging Contrastive Learning and Knowledge Distillation for Incomplete Modality Rumor Detection (2023.findings-emnlp)

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Challenge: Existing rumor detection models neglect the semantic coherence between text and image components in multimodal posts . Existing models neglect incomplete modalities in single modal posts, such as missing text or images .
Approach: They propose a framework for incomplete modality rumor detection that captures semantic consistency between text and image pairs while enhancing model generalization to incomplete modalities within individual posts.
Outcome: The proposed framework outperforms state-of-the-art methods on two English and two Chinese benchmark datasets for rumor detection in social media.
A Large Scale Speech Sentiment Corpus (2020.lrec-1)

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Challenge: Existing corpus for sentiment analysis uses text inputs, but voice inputs are becoming more important as smart assistants and mobile voice control become more prevalent.
Approach: They propose to extend the Switchboard-1 Telephone Speech Corpus by adding sentiment labels from 3 different human annotators for every transcript segment.
Outcome: The proposed corpus contains 49500 labeled speech segments covering 140 hours of audio.
MMAC: A Multilingual, Multimodal Alignment Framework for Cultural Grounding Evaluation (2026.acl-long)

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Challenge: Existing models lack cultural alignment across modalities and languages . a new framework to assess cultural awareness across linguistics and languages is needed .
Approach: They propose a framework that integrates tri-modally aligned cultural benchmarks and a five-dimensional evaluation protocol to assess cross-country awareness disparities.
Outcome: The proposed framework assesses cultural awareness disparities across modalities and languages . it is the first dataset aligned at the input level across text, image, and speech .
SPIDE: Serial and Parallel Intertwined Speculative Decoding (2026.findings-acl)

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Challenge: Speculative decoding (SD) is a training-free SD framework that orchestrates dynamic alternation combining serial dynamic drafting with parallel draft verification.
Approach: They propose a serial and parallel intertwined speculative DEcoding framework that orchestrates dynamic alternation combining serial dynamic drafting and parallel draft verification.
Outcome: The proposed framework accelerates inference while reducing the LLM usage costs.
Alignment for Efficient Tool Calling of Large Language Models (2025.emnlp-main)

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Challenge: Recent advances in tool learning have enabled large language models to integrate external tools, enhancing their task performance by expanding their knowledge boundaries.
Approach: They propose a framework that combines probabilistic knowledge boundary estimation with dynamic decision-making to allow LLMs to better assess when to invoke tools based on their confidence.
Outcome: The proposed framework shows significant improvements in tool efficiency by reducing unnecessary tool usage.
RBPtool: A Deep Language Model Framework for Multi-Resolution RBP-RNA Binding Prediction and RNA Molecule Design (2025.emnlp-main)

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Challenge: RNA-binding proteins play key roles in post-transcriptional gene regulation . existing methods focus on shallow sequence features or coarse structural representations . large language models allow for precise modeling and biologically informed de novo RNA design .
Approach: They extend RPI15223 into a multi-resolution, structure-level RBP-RNA dataset and introduce RBPtool, a framework that fuses sequence and structural information.
Outcome: The proposed framework achieves state-of-the-art performance on public benchmarks and the RPI15223 dataset while supporting fine-grained level predictions.
PLATO-XL: Exploring the Large-scale Pre-training of Dialogue Generation (2022.findings-aacl)

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Challenge: Experimental results show PLATO-XL achieves state-of-the-art results across multiple conversational tasks.
Approach: They propose to train PLATO-XL models with up to 11 billion parameters, trained on Chinese and English social media conversations.
Outcome: The proposed model achieves state-of-the-art on multiple conversational tasks, verifying its potential as a foundation model of conversational AI.
PEToolLLM: Towards Personalized Tool Learning in Large Language Models (2025.findings-acl)

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Challenge: Existing tool learning studies focus on general-purpose tool-use capability, but ignore the importance of personalized tool-user preferences.
Approach: They propose a framework to adapt Large Language Models to personalized tool learning task, which is trained through supervised fine-tuning and direct preference optimization.
Outcome: Extensive experiments on PEToolBench show that the proposed framework outperforms existing LLMs in the personalized tool learning task.
Towards IP Intelligence: Benchmarking Large Language Models on Intellectual Property Knowledge and Practice (2026.findings-acl)

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Challenge: Existing datasets and benchmarks focus only on patents or cover limited aspects of the IP field, lacking alignment with real-world scenarios.
Approach: They propose a bilingual IP task taxonomy and a large-scale bilingual benchmark to evaluate LLMs in real-world IP practice.
Outcome: The proposed model achieves only 75.8% accuracy, indicating room for improvement . open-source IP and law-oriented models lag behind closed-source general-purpose models .
Structure-Aware Zero-Shot Relational Learning for Knowledge Graphs without External Knowledge (2026.findings-acl)

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Challenge: Existing methods for Zero-shot Relational Learning depend on external knowledge, resulting in increased annotation costs and limited practical applicability.
Approach: They propose a structure-aware paradigm that performs ZRL without external knowledge . it leverages intrinsic structural patterns in KGs to bridge semantic correlations for new relations with existing ones.
Outcome: The proposed paradigm achieves 10.66% improvement in MRR while reducing annotation costs and enhancing practical applicability on three real-world benchmarks.
User-Assistant Bias in LLMs (2026.findings-acl)

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Challenge: Modern large language models are typically trained using structured role tags . asymmetries in training data associated with different role tags can potentially introduce inductive biases.
Approach: They propose a task-agnostic benchmark to test user–assistant bias in large language models . they find human-preference alignment amplifies user bias, reasoning fine-tuning reduces it .
Outcome: The proposed benchmark tests show that most instruction-tuned models exhibit strong user bias . human-preference alignment amplifies user bias, while reasoning fine-tuning reduces it.
JointCQ: Improving Factual Hallucination Detection with Joint Claim and Query Generation (2026.findings-acl)

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Challenge: Existing methods for detecting factual hallucinations in generated content exhibit limitations in the first two stages of the halluciation detection pipeline.
Approach: They propose a joint claim-and-query generation framework that can detect factual hallucinations in generated content.
Outcome: The proposed method outperforms existing methods on open-domain QA hallucination detection benchmarks.
An Empirical Study on Multiple Information Sources for Zero-Shot Fine-Grained Entity Typing (2021.emnlp-main)

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Challenge: Auxiliary information from multiple sources has been demonstrated to be effective in zero-shot fine-grained entity typing (ZFET) however, there is no comprehensive understanding of how to make better use of the existing information sources and how they affect the performance of ZFET.
Approach: They propose a multi-source fusion model targeting auxiliary information from multiple sources to improve zero-shot fine-grained entity typing (ZFET)
Outcome: The proposed model achieves 11.42% and 22.84% gains over state-of-the-art baselines on BBN and Wiki respectively with regard to macro F1 scores.
Pre-train or Annotate? Domain Adaptation with a Constrained Budget (2021.emnlp-main)

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Challenge: Recent work shows that pre-training in-domain language models can boost performance when adapting to a new domain.
Approach: They propose to combine annotation and pre-training to maximize performance under budget constraints.
Outcome: The proposed approach is based on the annotation cost of three procedural text datasets and pre-training cost of 3 in-domain language models.
CoMIF: Modeling of Complex Multiple Interaction Factors for Conversation Generation (2025.coling-main)

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Challenge: Existing methods for generating human-like dialogues lack implicit correlations among factors . different factors may alternately dominate token-level response generation during decoding .
Approach: They propose a framework that can model complex multiple interaction factors to generate human-like conversations.
Outcome: The proposed framework generates human-like conversations with multiple factors compared to state-of-the-art methods . et al. show that the proposed framework produces superior results over existing methods compared with the state- of-the art methods based on multiple datasets .
Does Chain-of-Thought Reasoning Really Reduce Harmfulness from Jailbreaking? (2025.findings-acl)

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Challenge: Existing jailbreak attacks fail against reasoning models enhanced by Chain-of-Thought (CoT) reasoning.
Approach: They propose a jailbreak method that uses Chain-of-Thought reasoning to reduce harmfulness from jailbreaking.
Outcome: The proposed jailbreak method performs well against open AI models and deepseek-R1 reasoning models.
InferenceDynamics: Adaptive LLM Routing through Structured Capability and Knowledge Profiling (2026.acl-long)

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Challenge: Large Language Model (LLM) routing is a pivotal technique for navigating a diverse landscape of LLMs.
Approach: They propose a flexible and scalable multi-dimensional routing framework that models the capability and knowledge of models.
Outcome: The proposed framework can be used to generalize and identify top-performing models for group-level routing using modern benchmarks including MMLU-Pro, GPQA, BigGenBench, and LiveBench.
DecoCal: Decoding with Calibration in Diffusion Large Language Models (2026.acl-long)

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Challenge: Diffusion Large Language Models (DLLMs) generate text via iterative token denoising . but decoding is challenging, with many tokens appearing predictable early .
Approach: They propose a Decoding framework that performs Calibration of token-level confidence across diffusion steps and leverages the calibrated results to guide decoding decisions.
Outcome: Experiments on multiple DLLMs and benchmarks show that DecoCal improves generation accuracy compared to existing strategies.
CapArena: Benchmarking and Analyzing Detailed Image Captioning in the LLM Era (2025.findings-acl)

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Challenge: Image captioning has been a challenge for vision-language researchers for decades . current VLMs focus on tasks like visual question answering (YA) but image captioning is not as advanced as expected.
Approach: They evaluate VLMs' performance on image captioning using human annotations . they find that some metrics show high caption-level agreement with humans .
Outcome: The proposed model outperforms open-source models on image captioning . it achieves 93.4% correlation with human rankings at $4 per test .
Masked Language Models Know Which are Popular: A Simple Ranking Strategy for Commonsense Question Answering (2022.findings-emnlp)

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Challenge: Empirical results show that pre-trained language models can improve the typical answer generation of GLMs.
Approach: They propose a ranking strategy that exploits WordNet to train a ranker that picks out the most popular answers for commonsense questions.
Outcome: The proposed ranking strategy is tested on a commonsense question answering (QA) dataset and on negative samples from WordNet.
SummaCoz: A Dataset for Improving the Interpretability of Factual Consistency Detection for Summarization (2024.findings-emnlp)

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Challenge: Summarization is an important application of Large Language Models.
Approach: They integrate human-annotated and model-generated natural language explanations to elucidate how a summary deviates and becomes inconsistent with its source article.
Outcome: The proposed model provides rationales for its judgments and improves its accuracy significantly.
Boot and Switch: Alternating Distillation for Zero-Shot Dense Retrieval (2023.findings-emnlp)

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Challenge: Existing approaches to enhance dense retrieval models are unwieldy, such as requiring explicit supervision, complex model architectures, or massive external models.
Approach: They propose an unsupervised method to enhance passage retrieval in zero-shot settings by iterating a loop that a dense retriever learns from supervision signals provided by a reranker.
Outcome: The proposed method outperforms leading supervised and unsupervised retrievers on the BEIR benchmark while showing strong adaptation abilities to tasks and domains that were unseen during training.
Learning to Control the Specificity in Neural Response Generation (P18-1)

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Challenge: Existing generative conversational models tend to favor general and trivial responses which appear frequently.
Approach: They propose a controlled response generation mechanism to handle different utterance-response relationships in terms of specificity.
Outcome: The proposed model outperforms state-of-the-art models under automatic and human evaluations.
HAD: HAllucination Detection Language Models Based on a Comprehensive Hallucination Taxonomy (2026.acl-industry)

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Challenge: relying on large language models for information has raised concerns about reliability and accuracy of outputs.
Approach: They propose a hallucination taxonomy with 11 categories for various NLG tasks and propose HAllucination Detection models which integrate hallucinism detection, span-level identification, and correction into a single inference process.
Outcome: The proposed models outperform baselines on HaluEval, FactCHD, and FaithBench, confirming their robustness and versatility.
Enhancing Hyperbolic Knowledge Graph Embeddings via Lorentz Transformations (2024.findings-acl)

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Challenge: Existing methods for knowledge graph embedding rely on tangent approximation and are not fully hyperbolic.
Approach: They propose a fully hyperbolic KGE method that represents entities as points in the Lorentz model and represents relations as the intrinsic transformation.
Outcome: The proposed method captures various types of relations including hierarchical structures.
Business as Rulesual: A Benchmark and Framework for Business Rule Flow Modeling with LLMs (2026.acl-long)

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Challenge: Existing benchmarks for extracting structured procedural knowledge from unstructured business documents are limited by simplistic schemas and shallow logical dependencies.
Approach: They propose a framework for extracting structured procedural knowledge from unstructured business documents . they propose BREX, a carefully curated benchmark comprising 409 real-world business documents and 2,855 expert-annotated rules .
Outcome: The proposed framework outperforms standard prompts in rule extraction and execution.
A Knowledge Regularized Hierarchical Approach for Emotion Cause Analysis (D19-1)

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Challenge: Emotion cause analysis aims to identify the reasons behind emotions . previous models focus on learning architecture with local textual information .
Approach: They propose a method to extract emotion cause with hierarchical neural model and knowledge-based regularizations by sentiment lexicon and common knowledge.
Outcome: The proposed method outperforms baselines on two public datasets in different languages and outperformed competitive baselines by 2.08%.
OpenCoder: The Open Cookbook for Top-Tier Code Large Language Models (2025.acl-long)

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Challenge: Code LLMs lack reproducible data pipelines and training protocols for reproducible advancements in code intelligence.
Approach: They propose a top-tier code LLM that releases model weights and inference code . reproducible data pipelines, rigorous experimental ablation results and training protocols are included .
Outcome: The proposed model achieves comparable performance to leading models and serves as an "open cookbook" reproducible training data, rigorous experimental ablation results, and detailed training protocols are also included in the model.
Understanding the Thinking Process of Reasoning Models: A Perspective from Schoenfeld’s Episode Theory (2025.emnlp-main)

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Challenge: Large Reasoning Models (LRMs) generate extensive chain-of-thought reasoning, but we lack a principled framework for understanding how these thoughts are structured.
Approach: They propose a method to analyze the reasoning traces of Large Reasoning Models using Schoenfeld’s Episode Theory.
Outcome: The proposed framework provides a theoretically grounded methodology for interpreting LRM cognition and enables future work on more controllable and transparent reasoning systems.
Self-Knowledge Distillation for Knowledge Graph Embedding (2024.lrec-main)

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Challenge: Knowledge graph embedding (KGE) is an important task for many downstream applications.
Approach: They propose to use self-knowledge distillation to learn a low-dimensional model from a pre-trained high-dimensional one.
Outcome: The proposed model can improve model performance while maintaining lightweight structure.
FaithBench: A Diverse Hallucination Benchmark for Summarization by Modern LLMs (2025.naacl-short)

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Challenge: Existing evaluations of hallucinations in large language models suffer from a lack of diversity and recency in the LLM and LLM families considered.
Approach: They propose a summarization hallucination benchmark that challenges models to disagree on hallucines . they use models to generate answers or summaries from textual input .
Outcome: The proposed model combines the best of 10 modern LLMs with ground truth annotations.
TInR: Exploring Tool-Internalized Reasoning in Large Language Models (2026.acl-long)

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Challenge: Existing methods rely on external tool documentation during reasoning, leading to tool mastery difficulty, tool size constraints, and inference inefficiency.
Approach: They propose a tool-internalized reasoning framework for unified reasoning and tool usage that integrates external tools into Large Language Models (LLMs) to address these issues, they propose 'tool-internet-based' reasoning.
Outcome: The proposed method achieves superior performance across in-domain and out-of-domain settings, highlighting its effectiveness and efficiency.
UEGP: Unified Expert-Guided Pre-training for Knowledge Rekindle (2024.findings-naacl)

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Challenge: Existing paradigms for pre-training and fine-tuning have limitations . knowledge rekindle aims to break through performance upper bounds of experts without introducing additional annotated data.
Approach: They propose a new paradigm for pre-training and fine-tuning that aims to re-incorporate the fine- tuned expert model into the training cycle and break through performance upper bounds of experts.
Outcome: The proposed model breaks through performance upper bounds of experts without additional annotated data.
Towards Noise-Tolerant Speech-Referring Video Object Segmentation: Bridging Speech and Text (2023.emnlp-main)

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Challenge: Recent advances in vision-language learning have significantly advanced Human-Computer Interactions (HCI).
Approach: They propose a method to align the semantic spaces between speech and text by incorporating two modules to align semantic spaces.
Outcome: The proposed method outperforms state-of-the-art approaches on AVOS benchmarks.
BiasAlert: A Plug-and-play Tool for Social Bias Detection in LLMs (2024.emnlp-main)

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Challenge: Existing evaluation approaches rely on fixed-form outputs and cannot adapt to flexible open-text generation scenarios.
Approach: They propose a plug-and-play tool to detect social bias in open-text LLMs.
Outcome: Extensive experiments show that BiasAlert outperforms state-of-the-art methods in detecting bias in open-text generation scenarios.
Maria: A Visual Experience Powered Conversational Agent (2021.acl-long)

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Challenge: Existing studies focus on grounding conversational agents on text-only corpora, but they lack the perception ability to our physical world.
Approach: They propose to ground conversational agents on images retrieved from large-scale image indexes . they propose to use visual knowledge to generate informative responses based on the extracted knowledge .
Outcome: The proposed agent outperforms state-of-the-art methods on automatic metrics and human evaluation.
CLFFRD: Curriculum Learning and Fine-grained Fusion for Multimodal Rumor Detection (2024.lrec-main)

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Challenge: Existing multimodal rumor detection models overlook sample difficulty and order when training . Existing models overlook text-level difficulty, image-level and multimodal difficulty when training samples .
Approach: They propose a curriculum learning framework that uses fine-grained fusion to detect rumors . they propose fusion-based methods that combine text and images to enhance semantic cohesion .
Outcome: The proposed framework outperforms state-of-the-art models on English and Chinese benchmark datasets.
Apertus: Democratizing Open and Compliant LLMs for Global Language Environments (2026.acl-long)

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Alejandro Hernández-Cano, Alexander Hägele, Allen Hao Huang, Angelika Romanou, Antoni-Joan Solergibert, Barna Pásztor, Bettina Messmer, Dhia Garbaya, Eduard Frank Ďurech, Ido Hakimi, Juan Garcia Giraldo, Mete Ismayilzada, Negar Foroutan, Skander Moalla, Tiancheng Chen, Vinko Sabolčec, Yixuan Xu, Michael Aerni, Badr AlKhamissi, Inés Altemir Marinas, Mohammad Hossein Amani, Matin Ansaripour, Ilia Badanin, Harold Benoit, Emanuela Boros, Nicholas John Browning, Fabian Bösch, Maximilian Böther, Niklas Canova, Camille Challier, Clément Charmillot, Jonathan Coles, Jan Milan Deriu, Arnout Devos, Lukas Drescher, Daniil Dzenhaliou, Maud Ehrmann, Dongyang Fan, Simin Fan, Silin Gao, Miguel Gila, María Grandury, Diba Hashemi, Alexander Miserlis Hoyle, Jiaming Jiang, Mark Klein, Andrei Kucharavy, Anastasiia Kucherenko, Frederike Lübeck, Roman Machacek, Theofilos Ioannis Manitaras, Andreas Marfurt, Kyle Matoba, Simon Matrenok, Henrique Mendonça, Fawzi Roberto Mohamed, Syrielle Montariol, Luca Mouchel, Sven Najem-Meyer, Jingwei Ni, Gennaro Oliva, Matteo Pagliardini, Elia Palme, Andrei Panferov, Léo Paoletti, Marco Passerini, Ivan Pavlov, Auguste Poiroux, Kaustubh Ponkshe, Nathan Ranchin, Javier Rando, Mathieu Sauser, Jakhongir Saydaliev, Mukhammadali Sayfiddinov, Marian Schneider, Stefano Schuppli, Marco Scialanga, Andrei Semenov, Kumar Shridhar, Raghav Singhal, Anna Sotnikova, Alexander Sternfeld, Ayush Kumar Tarun, Paul Teiletche, Jannis Vamvas, Xiaozhe Yao, Hao Zhao, Alexander Ilic, Ana Klimovic, Andreas Krause, Caglar Gulcehre, David Rosenthal, Elliott Ash, Florian Tramèr, Joost VandeVondele, Livio Veraldi, Martin Rajman, Thomas C. Schulthess, Torsten Hoefler, Antoine Bosselut, Martin Jaggi, Imanol Schlag
Challenge: Apertus is a fully open suite of large language models (LLMs) designed to address responsibility shortcomings in today’s open model ecosystem, namely data responsibility and global representation.
Approach: They propose to release a fully open suite of large language models (LLMs) that address data responsibility and global representation shortcomings in today’s open model ecosystem.
Outcome: The proposed model is pretrained on openly available data and suppresses verbatim recall of data while retaining task performance.
Synergistic Augmentation: Enhancing Cross-Domain Zero-Shot Slot Filling with Small Model-Assisted Large Language Models (2025.findings-acl)

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Challenge: Existing approaches to slot filling are limited due to data scarcity and timeconsuming efforts.
Approach: They propose a framework that harnesses the power of a small model to augment inferential capabilities of LLMs without additional training.
Outcome: The proposed framework improves slot filling performance on a spoken language dataset and a NER dataset.
Building Parallel Monolingual Gan Chinese Dialects Corpus (L18-1)

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Challenge: In particular, we manually annotate a Gan Chinese Dialects Corpus (GCDC) including 131.5 hours and 310 documents with 6 different genres, containing news, official document, story, prose, poet, letter and speech, from 19 different Gan regions.
Approach: They propose a scheme to represent Gan Chinese dialects using Chinese character, Chinese Pinyin and Chinese audio forms.
Outcome: The proposed scheme is based on a Gan Chinese Dialects Corpus (GCDC) with 131.5 hours and 310 documents with 6 different genres, containing news, official document, story, prose, poet, letter and speech, from 19 different Gan regions.
HSS-Synth: Humanities and Social Sciences Data Synthesis for LLMs (2026.findings-acl)

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Challenge: High-quality, diverse data are vital for large language models (LLMs) but remain scarce and costly.
Approach: They define the first HSS domain system covering 14 mainstream fields and introduce HSS-Synth.
Outcome: the proposed pipeline outperforms 14 leading baselines on 16 benchmarks.
OS Agents: A Survey on MLLM-based Agents for Computer, Phone and Browser Use (2025.acl-long)

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Challenge: a new generation of (M)LLMs is enabling the creation of superintelligent AI assistants . OS Agents can complete tasks autonomously and have the potential to significantly enhance the lives of billions of users worldwide.
Approach: They propose to build OS Agents that operate within operating systems' GUIs and GUIs . they examine evaluation metrics and benchmarks to identify promising directions .
Outcome: The proposed agents are based on operating systems (OS) and operating systems frameworks.
Feedback-Driven Tool-Use Improvements in Large Language Models via Automated Build Environments (2026.findings-acl)

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Challenge: Currently, there are no efficient reinforcement learning (RL) frameworks specifically designed for tool use.
Approach: They propose an automated environment construction pipeline that incorporates scenario decomposition, document generation, function integration, complexity scaling, and localized deployment to enable high-quality training environments without external tools.
Outcome: The proposed framework significantly improves the models’ tool-use performance without degrading their general capabilities.
Towards Process-Oriented, Modular, and Versatile Question Generation that Meets Educational Needs (2022.naacl-main)

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Challenge: NLP-powered automatic question generation (QG) techniques have not been widely adopted in classrooms to date.
Approach: They propose to identify key impediments and improve the usability of NLP-powered automatic question generation techniques by understanding how instructors construct questions and identifying touch points to enhance the underlying NLP models.
Outcome: The proposed methods can be used by 11 instructors across 7 universities and highlight their needs and needs when creating questions.
Advancing Large Language Model Attribution through Self-Improving (2024.emnlp-main)

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Challenge: Teaching large language models to generate text with citations to evidence sources requires high-quality attribution data, which is costly and labor-intensive.
Approach: They propose a framework for iteratively improving the attribution capability of large language models (LLMs) by attributing output to verifiable sources.
Outcome: Experiments on three open-domain question-answering datasets show that START improves in aggregating information across multiple sources.
Emotion-Cause Pair Extraction as Sequence Labeling Based on A Novel Tagging Scheme (2020.emnlp-main)

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Challenge: Existing methods to extract emotions and causes from unannotated emotion texts are labor intensive and limited applications in real-world scenarios.
Approach: They propose a novel task to find emotions and corresponding causes in unannotated emotion texts.
Outcome: The proposed model outperforms the state-of-the-art method by 2.26% (p0.001) in F1 measure.
Similarity = Value? Consultation Value-Assessment and Alignment for Personalized Search (2025.emnlp-main)

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Challenge: Existing methods rely on semantic similarity to align historical consultations with current queries due to the absence of ‘value’ labels, but this lacks exploration of needs in user consultations.
Approach: They propose a consultation value assessment framework that evaluates historical consultations from three novel perspectives: (1) Scenario Scope Value, (2) Posterior Action Value, and (3) Time Decay Value.
Outcome: The proposed model outperforms baselines on public and commercial datasets on both retrieval and ranking tasks.
Multi-step Jailbreaking Privacy Attacks on ChatGPT (2023.findings-emnlp)

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Challenge: With the rapid evolution of large language models (LLMs), many downstream NLP tasks can be well solved given appropriate prompts.
Approach: They propose to integrate ChatGPT and Bing GPT3 into their applications to create a set of LLMs that can be used to generate NLP tasks with appropriate prompts.
Outcome: The proposed models can be zero-shot or few-shot learners to solve specified tasks and can even be zero or few shot learners.
PreGenie: An Agentic Framework for High-quality Visual Presentation Generation (2025.findings-emnlp)

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Challenge: Visual presentations are vital for effective communication, but they are limited by their complexity and lack of visual understanding.
Approach: a new framework is proposed to generate high-quality visual presentations using multimodal large language models.
Outcome: The proposed framework outperforms existing models in multimodal understanding and content consistency.
A Neural Transition-based Model for Argumentation Mining (2021.acl-long)

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Challenge: Existing methods for identifying argumentation structures are inefficient and class imbalanced.
Approach: They propose a neural transition-based model that incrementally builds an argumentation graph by generating a sequence of actions.
Outcome: The proposed model can handle tree and non-tree structured argumentation without structural constraints.
SessionIntentBench: A Multi-task Inter-session Intention-shift Modeling Benchmark for E-commerce Customer Behavior Understanding (2026.findings-acl)

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Challenge: Existing models fail to capture and model customer intention effectively because of insufficient information exploitation and only apparent information like descriptions and titles are used.
Approach: They propose to exploit existing session data to capture and model intention in E-commerce product purchase sessions using a multimodal benchmark.
Outcome: The proposed framework can bridge the gap between intention understanding in simplified research cases like co-buy intention and more complex yet practical scenarios like session history.
Learning Neural Templates for Recommender Dialogue System (2021.emnlp-main)

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Challenge: Recent advances in neural models have shown promising progress on this task, but key challenges remain .
Approach: They propose a framework that can decouple dialogue generation from item recommendation . they use a response template generator and item selector to generate a responses template .
Outcome: The proposed framework outperforms the state-of-the-art methods on the benchmark ReDial.
Syntax Controlled Knowledge Graph-to-Text Generation with Order and Semantic Consistency (2022.findings-naacl)

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Challenge: Existing knowledge graph-to-text generation methods focus on sequence-to sequence generation, but the linearized order of KG is obtained through a heuristic search without data-driven optimization.
Approach: They propose to generate easy-to-understand sentences from the knowledge graph . they incorporate part-of-speech syntactic tags to constrain the positions to copy words from the KG and employ a semantic context scoring function to evaluate the semantic fitness for each word in its local context.
Outcome: The proposed method achieves state-of-the-art on two datasets, WebNLG and DART, and achieves high consistency.
Inside Out: Evolving User-Centric Core Memory Trees for Long-Term Personalized Dialogue Systems (2026.acl-long)

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Challenge: Existing personalized dialogue systems struggle to reconcile unbounded interactions with finite context constraints.
Approach: They propose a framework that utilizes a globally maintained PersonaTree as the carrier of long-term user profiling.
Outcome: The proposed framework outperforms existing systems in suppressing contextual noise and persona inconsistency.
PLATO-2: Towards Building an Open-Domain Chatbot via Curriculum Learning (2021.findings-acl)

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Challenge: PLATO-2 is a high-quality open-domain chatbot that can generate one-to-many mappings and improve response quality.
Approach: They propose a curriculum learning process to build a high-quality open-domain chatbot . they use a coarse-grained generation model and latent variables to train a generative model .
Outcome: The proposed model improves on Chinese and English data and can generate diverse responses and select the best response.
One-Dimensional Object Detection for Streaming Text Segmentation of Meeting Dialogue (2025.findings-acl)

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Challenge: Current text segmentation models exhibit numerous limitations, such as imbalances in labels that affect the stability of model training and discrepancies between the model’s training tasks (sentence classification) and the actual text segmenting.
Approach: They implement a sliding window-based segmentation method and employ two different levels of sliding window based balanced label strategies to stabilize the training process of the streaming segmentation model.
Outcome: The proposed method is robust, controllable, and achieves state-of-the-art performance.
ASTRA: An Automated Framework for Strategy Discovery, Retrieval, and Evolution for Jailbreaking LLMs (2026.acl-long)

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Challenge: Existing methods lack the capability for continuous learning and self-evolution from interactions, limiting the diversity and adaptability of attack strategies.
Approach: They propose an automated framework capable of discovering, retrieving, and evolving attack strategies.
Outcome: The proposed framework outperforms existing baselines in a black-box setting.

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