Papers by Yi Zhou

122 papers
Disentangled Multi-span Evolutionary Network against Temporal Knowledge Graph Reasoning (2025.findings-acl)

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Challenge: Existing methods for temporal knowledge Graphs neglect internal structural interactions between subgraphs and ignore potential smooth features that do not lead to semantic changes.
Approach: They propose to use a disentangled multi-span evolutionary network to capture local neighbor features while perceiving historical neighbor semantic information.
Outcome: Extensive experiments show that the proposed model outperforms the state-of-the-art in TKG reasoning by 22.7%.
Alignment-Enhanced Decoding: Defending Jailbreaks via Token-Level Adaptive Refining of Probability Distributions (2024.emnlp-main)

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Challenge: Existing defenses against jailbreaks focus on perturbing or inspecting inputs, but ignore competing objectives, the underlying cause of alignment failures.
Approach: They propose a novel defense that employs adaptive decoding to address the root causes of jailbreak issues.
Outcome: The proposed defense improves safety alignment while maintaining helpfulness.
A Deep Learning-Based System for PharmaCoNER (D19-57)

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Challenge: Efficient access to mentions of clinical entities is very important for using clinical text.
Approach: They developed a pipeline system based on deep learning methods for this shared task . it achieves a micro-average F1-score of 0.9105 on track 1 and a mini-average LSTM score of 0.8391 on track 2 .
Outcome: The proposed system achieves a micro-average F1-score of 0.9105 on track 1 and a mini-average score of 0.8391 on track 2.
AT²PO: Agentic Turn-based Policy Optimization via Tree Search (2026.acl-long)

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Challenge: Recent advances in large language models (LLMs) have catalyzed the development of autonomous agents capable of executing complex, multi-turn tasks.
Approach: They propose a framework for agentic reinforcement learning that integrates turn-level tree search with tree search to address key challenges.
Outcome: The proposed framework addresses key challenges: limited exploration diversity, sparse credit assignment, and misaligned policy optimization.
BRIGHTER: BRIdging the Gap in Human-Annotated Textual Emotion Recognition Datasets for 28 Languages (2025.acl-long)

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Challenge: Emotion recognition is an umbrella term for several NLP tasks, but most work on high-resource languages has focused on low-resourced languages.
Approach: They propose to use emotion recognition to describe perceived emotions in 28 different languages and across several domains to identify and annotate the datasets.
Outcome: The proposed datasets cover low-resource languages from Africa, Asia, Eastern Europe, and Latin America, with instances labeled by fluent speakers.
HATA: Trainable and Hardware-Efficient Hash-Aware Top-k Attention for Scalable Large Model Inference (2025.findings-acl)

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Challenge: Existing top-k attention methods struggle to strike a balance between efficiency and accuracy.
Approach: They propose a top-k attention approach that integrates low-overhead techniques into the Top-k Attention process to achieve 7.2 speedup compared to vanilla full attention.
Outcome: The proposed approach achieves 7.2 speedup compared to current top-k attention methods while maintaining model accuracy.
ESGenius: Benchmarking LLMs on Environmental, Social, and Governance (ESG) and Sustainability Knowledge (2025.emnlp-main)

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Challenge: ESGenius is a comprehensive benchmark for evaluating Large Language Models on ESG and sustainability knowledge.
Approach: They introduce ESGenius, a benchmark for evaluating and enhancing ESG proficiency . they use a rigorous two-stage evaluation protocol and a repository of foundational frameworks .
Outcome: ESGenius is a benchmark for evaluating and enhancing the proficiency of Large Language Models (LLMs) in ESG and sustainability-focused question answering.
Soft Language Clustering for Multilingual Model Pre-training (2023.acl-long)

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Challenge: Multilingual pre-trained language models have demonstrated impressive (zero-shot) cross-lingual transfer abilities, however, their performance is hindered when the target language has distant typology from the source language or when pre-training data is limited in size.
Approach: They propose a method that contextually retrieves prompts as flexible guidance for encoding instances conditionally.
Outcome: The proposed method improves on the XTREME task and also for low-resource languages in unsupervised sentence retrieval.
Symbol tuning improves in-context learning in language models (2023.emnlp-main)

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Challenge: Language models are sensitive to the way that prompts are given, indicating that they are not reasoning in a robust manner.
Approach: They propose to fine tune language models on in-context input-label pairs where natural language labels are replaced with arbitrary symbols.
Outcome: The proposed model is much stronger at reasoning tasks and more robust to underspecified prompts than the standard model.
Knowledge-Grounded Dialogue Generation with a Unified Knowledge Representation (2022.naacl-main)

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Challenge: Existing knowledge-grounded dialogue systems perform poorly on unseen topics due to limited topics covered in training data.
Approach: They propose a language model that homogenizes different knowledge sources to a unified knowledge representation for knowledge-grounded dialogue generation tasks.
Outcome: The proposed language model generalizes well across knowledge-grounded dialogue tasks.
MotiveBench: How Far Are We From Human-Like Motivational Reasoning in Large Language Models? (2025.findings-acl)

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Challenge: Existing benchmarks for large language models lack information asymmetry with real-world situations.
Approach: They propose a benchmark to evaluate the human-like motivational and behavioral reasoning ability of LLMs with detailed, realistic situations.
Outcome: The proposed benchmark compared LLMs with real-world scenarios on seven model families and found that the most advanced models struggle with understanding "love & belonging" needs.
Decentralized Arena: Towards Democratic and Scalable Automatic Evaluation of Language Models (2026.acl-long)

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Challenge: closed-ended question-based benchmarks struggle with saturation as newer models emerge . crowd-sourced leaderboards rely on costly and slow human judges .
Approach: They propose a framework that leverages collective intelligence from all large language models to evaluate each other.
Outcome: a new framework enables a democratic, pairwise evaluation of all large language models . it achieves 97% correlation with human judgements, while significantly reducing the cost.
CASE – Condition-Aware Sentence Embeddings for Conditional Semantic Textual Similarity Measurement (2026.eacl-long)

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Challenge: Recent approaches use semantic similarity to improve the quality of sentence embeddings, but it is difficult to measure the similarity between sentences.
Approach: They propose a condition-aware sentence embedding method that uses an LLM encoder to create an embeddable sentence under a given condition.
Outcome: The proposed method improves the performance of LLM-based embeddings and the isotropy of the embeddable space despite requiring a small number of dimensions.
Enhancing Extractive Question Answering in Multiparty Dialogues with Logical Inference Memory Network (2025.coling-main)

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Challenge: Existing models for multiparty dialogue question answering (QA) do not consider logical inference relations in multiparty dialogs, leading to suboptimal performance.
Approach: They propose a memory network with logical inference for extractive QA in multiparty dialogues.
Outcome: The proposed model achieves state-of-the-art on Molweni and FriendsQA benchmarks.
TextMixer: Mixing Multiple Inputs for Privacy-Preserving Inference (2023.findings-emnlp)

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Challenge: Pre-trained language models (PLMs) are often deployed as cloud services, enabling users to upload textual data and perform inference remotely.
Approach: They propose a privacy-preserving inference framework called MixPi which aims to obfuscate a user's private input by mixing it with multiple other inputs.
Outcome: The proposed framework surpasses existing privacy-preserving methods on token and sentence classification tasks.
Dropping Experts, Recombining Neurons: Retraining-Free Pruning for Sparse Mixture-of-Experts LLMs (2025.findings-emnlp)

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Challenge: Sparse Mixture-of-Experts (SMoE) architectures require loading all expert parameters . previous work focused on expert pruning and merging but focused on neuron-level structure .
Approach: They propose a task-agnostic framework for expert pruning and reconstruction . it prunes redundant experts using router statistics, then decomposes them into neuron-level expert segments .
Outcome: The proposed framework reduces the number of experts and memory usage, making it easier to deploy.
SimulSpeech: End-to-End Simultaneous Speech to Text Translation (2020.acl-main)

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Challenge: SimulSpeech is an end-to-end simultaneous speech to text translation system . conventional approaches to simultaneous speech translation divide the translation process into two stages .
Approach: They develop an end-to-end simultaneous speech to text translation system which translates speech in source language to text in target language concurrently.
Outcome: The proposed system achieves reasonable BLEU scores and lower delay compared to full-sentence translation model.
Towards Building a Robust Toxicity Predictor (2023.acl-industry)

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Challenge: Recent studies have focused on robustness of toxicity language predictors, but this is problematic for real-world toxicity detection.
Approach: They propose a novel adversarial attack that exploits greedy search strategies to fool toxic text classifiers.
Outcome: The proposed attack can detect weaker toxicity language detectors even against unseen attacks.
Exploring Mode Connectivity for Pre-trained Language Models (2022.emnlp-main)

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Challenge: Recent years have witnessed the prevalent application of pre-trained language models (PLMs) in NLP. From the perspective of parameter space, PLMs provide generic initialization, starting from which high-performance minima could be found.
Approach: They investigate the geometric connections of different minima through the lens of mode connectivity, which measures whether two minima can be connected with a low-loss path.
Outcome: The proposed model can be used to find low-loss paths between two minima, and to understand how their mode connectivity affects their task knowledge.
Knowledge Inheritance for Pre-trained Language Models (2022.naacl-main)

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Challenge: Existing large-scale pre-trained language models are mainly trained from scratch individually, ignoring that many well-taught PLMs are available.
Approach: They propose a pre-training framework called knowledge inheritance and propose auxiliary supervision to efficiently learn larger PLMs.
Outcome: The proposed framework can be used to train large-scale language models with huge parameters and a large dataset can be adapted to domain adaptation and knowledge transfer.
Revisiting Over-Smoothness in Text to Speech (2022.acl-long)

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Challenge: Non-autoregressive text to speech models ignore correlation in time and frequency domains, causing blurry results.
Approach: They revisit the problem of over-smoothness in non-autoregressive text to speech models . they use methods that reduce complexity of data distributions and improve modeling methods .
Outcome: The proposed models achieve better voice quality and faster inference speed than autoregressive models.
Can Word Sense Distribution Detect Semantic Changes of Words? (2023.findings-emnlp)

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Challenge: Existing methods to detect semantic variations of words are not accurate for time-sensitive predictions.
Approach: They propose to use pretrained static sense embeddings to annotate a word's occurrence with a sense id to compare its distributions.
Outcome: The proposed method compares word sense distributions across two corpora to predict meaning change . the results show that pretrained LLMs can detect changes in words over time .
Evaluating Unsupervised Dimensionality Reduction Methods for Pretrained Sentence Embeddings (2024.lrec-main)

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Challenge: Sentence embeddings produced by pretrained language models are high dimensional (ca. 1024-4096) this is problematic when representing large numbers of sentences in memory- or compute-constrained devices.
Approach: They propose to use Principal Component Analysis to reduce the dimensionality of sentence embeddings produced by pretrained language models to reduce their complexity.
Outcome: The proposed methods reduce the dimensionality of sentence embeddings by 50% without incurring significant loss in performance in multiple downstream tasks.
Weakly-supervised Text Classification Based on Keyword Graph (2021.emnlp-main)

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Challenge: Existing methods for text classification ignore keyword correlation, thus ignoring it . existing methods treat keywords independently, thus not exploiting correlation between them .
Approach: They propose a framework to explore keyword-keyword correlation on keyword graph by GNN . they use a self-supervised task to pretrain annotators and fine-tune them .
Outcome: The proposed method outperforms existing methods on long- and short-text datasets.
DocMMIR: A Framework for Document Multi-modal Information Retrieval (2025.findings-emnlp)

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Challenge: Existing multi-modal information retrieval models lack a comprehensive exploration of document-level retrieval . existing models suffer from the absence of cross-domain datasets at this granularity.
Approach: They propose a multi-modal document retrieval framework to unify diverse document formats and domains with a comprehensive retrieval scenario.
Outcome: The proposed framework improves document retrieval performance on a large multimodal dataset.
EPiDA: An Easy Plug-in Data Augmentation Framework for High Performance Text Classification (2022.naacl-main)

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Challenge: Existing methods for data augmentation do not fully exploit the potential of DA in NLP.
Approach: They propose an easy and plug-in framework for data augmentation to support effective text classification.
Outcome: The proposed framework outperforms existing methods in most cases, but not using agent networks or pre-trained generation networks.
Interpreting Twitter User Geolocation (2020.acl-main)

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Challenge: Existing methods for identifying user geolocation suffer from a lack of interpretability on the corresponding results.
Approach: They adopt influence functions to interpret the behavior of GNN-based models by identifying the importance of training users when predicting locations.
Outcome: The proposed method provides meaningful explanations on prediction results and also uncovers the so-called "black-box" GNN-based models by investigating the effect of individual nodes.
FPE2M2: Approaching Lossless and Efficient Quantization with Native Floating Point (2025.findings-acl)

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Challenge: Auto-regressive decoding is a memory-bound job, meaning decoding performance is limited by the bandwidth rather than the computational capabilities of the GPU.
Approach: They propose a framework that supports lossless weight-only quantization inference and validate it on Qwen and LLaMA Models.
Outcome: The proposed framework achieves the highest efficiency with lossless accuracy on Qwen and LLaMA Models across various modalities.
RuleEdit: Towards Rule-Level Knowledge Generalization to Mitigate Over-Editing in Large Language Models (2025.findings-acl)

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Challenge: Existing knowledge editing methods focus on instance-level editing, which is prone to knowledge degradation and general ability deterioration due to redundant instance-specific modifications.
Approach: They propose a rule-level editing method that generalizes rule-derived knowledge to update rule-based instances.
Outcome: The proposed method improves portability and performance over baselines for LLaMA-2-7B on RULEmix.
Target-Sensitive Memory Networks for Aspect Sentiment Classification (P18-1)

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Challenge: Aspect sentiment classification (ASC) is a fundamental task in sentiment analysis.
Approach: They propose to use memory networks to deal with ASC using aspect and sentence terms and use them to classify the sentiment polarity.
Outcome: The proposed techniques can be implemented in a variety of contexts and their effectiveness is evaluated.
Multi-Turn Response Selection for Chatbots with Deep Attention Matching Network (P18-1)

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Challenge: Existing models for matching dialogue responses rely on semantic and functional dependencies . a recent study only uses the last utterance in context for matching a reply .
Approach: They propose a model that matches a response with its multi-turn context using attention.
Outcome: The proposed model outperforms the state-of-the-art models on two large-scale multi-turn response selection tasks.
Annotating Training Data for Conditional Semantic Textual Similarity Measurement using Large Language Models (2025.emnlp-main)

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Challenge: Semantic similarity between two sentences depends on the aspects considered between those sentences.
Approach: They propose a Conditional Semantic Textual Similarity task which measures the similarity between two sentences under a specified condition.
Outcome: The proposed method improves Spearman correlation by 5.4% by training a supervised model on the re-annotated dataset.
MIMIR: A Customizable Agent Tuning Platform for Enhanced Scientific Applications (2024.emnlp-demo)

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Challenge: Large language models (LLMs) have evolved into interactive agents capable of planning, tool use, and task execution across various tasks.
Approach: They propose a platform that leverages large language models to generate agent-tuning data for fine-tuneing smaller, specialized models.
Outcome: MIMIR enables large models to simulate various roles and create interaction data, which can then be used to fine-tune open-source models like LLaMA2.
One Refiner to Unlock Them All: Inference-Time Reasoning Elicitation via Reinforcement Query Refinement (2026.acl-long)

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Challenge: Existing alignment methods for Large Language Models (LLMs) are expensive and lack the flexibility to fully activate their latent reasoning capabilities.
Approach: They propose a modular framework that treats reasoning elicitation as an inference-time alignment task.
Outcome: The proposed framework outperforms baselines by 2.1% on average across diverse architectures and benchmarks.
Language Model is Suitable for Correction of Handwritten Mathematical Expressions Recognition (2023.emnlp-main)

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Challenge: Existing approaches to handwritten mathematical expression recognition are limited by CFGs and pre-generated triplet data.
Approach: They propose an architecture that integrates recognition and language features to output corrected sequences while optimizing with a string decoder recognition model.
Outcome: The proposed architecture outperforms state-of-the-art methods on CROHME datasets.
PunchBench: Benchmarking MLLMs in Multimodal Punchline Comprehension (2025.acl-long)

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Challenge: Existing benchmarks on punchline comprehension suffer from language shortcuts that allow models to rely on text, lack of question diversity, and narrow focus on a specific domain of multimodal content.
Approach: They propose a multimodal punchline comprehension benchmark to assess models' ability to comprehend punchlines.
Outcome: The proposed model surpasses in-context learning and chain-of-thought in punchline comprehension.
A Study of Non-autoregressive Model for Sequence Generation (2020.acl-main)

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Challenge: Non-autoregressive (NAR) models generate all tokens in parallel, resulting in faster generation speed compared to autoregressive models.
Approach: They propose to use knowledge distillation and source-target alignment to bridge the gap between NAR and autoregressive models in various tasks.
Outcome: The proposed techniques can speed up NAR models in some tasks but not all . the proposed techniques reduce target token dependency while allowing for faster inference .
ThinkLinker: From Low-Rank Interaction to Knowledge-Aware Verification for Multimodal Entity Linking (2026.findings-acl)

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Challenge: Existing methods for multimodal entity linking rely on textual context for disambiguation . textual contextual information alone fails to resolve ambiguity, leading to unreliable disambiguations in weak contexts.
Approach: They propose a two-stage multimodal entity linking framework called ThinkLinker . they propose fusion mechanism to model joint dependencies among features .
Outcome: The proposed framework outperforms state-of-the-art models on public benchmark datasets.
FastDiff 2: Revisiting and Incorporating GANs and Diffusion Models in High-Fidelity Speech Synthesis (2023.findings-acl)

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Challenge: Experimental results show that Generative adversarial networks sacrifice sample diversity for quality and speed, while diffusion models exhibit outperformed sample quality and diversity at a high computational cost.
Approach: They propose to combine GANs and diffusion probabilistic models to achieve better sample quality and diversity.
Outcome: The proposed models outperform GANs and diffusion models in speech synthesis . the proposed models enjoy an efficient 4-step sampling process and exhibit better sample diversity .
VENUS: A VLLM-driven Video Content Discovery System for Real Application Scenarios (2025.emnlp-industry)

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Challenge: Video Content Discovery (VCD) is to identify specific videos defined by a pre-specified text policy.
Approach: They propose a Vision-Language Large Model-driven video content discovery system called VENUS to solve these problems.
Outcome: The proposed system generates high-quality, VCD-specific data for model training and extends it to support it better.
Accurate KV Cache Quantization with Outlier Tokens Tracing (2025.acl-long)

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Challenge: Large Language Models (LLMs) require substantial computational resources during deployment.
Approach: They propose a method to identify outlier tokens and exclude them from quantization . they find that the method can deliver a 6.4 times reduction in memory usage and a 2.5 times increase in throughput .
Outcome: The proposed method delivers a 6.4 times reduction in memory usage and a 2.5 times increase in throughput under 2-bit quantization.
Is Reference Necessary in the Evaluation of NLG Systems? When and Where? (2024.naacl-long)

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Challenge: Despite recent advances in reference-free metrics, it has not been well understood when and where they can be used as an alternative to reference-based metrics.
Approach: They propose to use reference-free metrics to evaluate NLG systems . they find they have a higher correlation with human judgment and greater sensitivity to deficiencies in language quality .
Outcome: The proposed metrics exhibit higher correlation with human judgment and greater sensitivity to deficiencies in language quality.
Evaluating and Enhancing the Robustness of Neural Network-based Dependency Parsing Models with Adversarial Examples (2020.acl-main)

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Challenge: Previously studies focused on semantic tasks such as sentiment analysis, question answering and reading comprehension.
Approach: They propose two approaches to study where and how adversarial examples exist in dependency parsing . they use a state-of-the-art parser to find adversarials in existing texts .
Outcome: The proposed approaches show that adversarial examples exist in dependency parsing . they show that up to 77% of input examples admit adversarials .
IPR: Intelligent Prompt Routing with User-Controlled Quality-Cost Trade-offs (2025.emnlp-industry)

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Challenge: Existing systems require users to manually select models or employ rigid routing rules that fail to capture the continuous spectrum of query complexity.
Approach: They propose a quality-constrained intelligent prompt routing framework that automatically selects optimal models based on predicted response quality and user-specified tolerance levels.
Outcome: The proposed framework achieves 43.9% cost reduction while maintaining quality parity with strongest model in the Claude family and processes requests with sub-150ms latency.
Interpretable Operational Risk Classification with Semi-Supervised Variational Autoencoder (2020.acl-main)

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Challenge: Existing text classification frameworks for operational risk prediction lack interpretability and labeled data are often misaligned.
Approach: They propose a semi-supervised text classification framework that integrates multi-head attention mechanism with Semi-supervised variational inference for operational risk classification.
Outcome: The proposed framework outperforms baseline methods on a real-world dataset and can use unlabeled data to learn visually interpretable representations.
Aerial Vision-and-Dialog Navigation (2023.findings-acl)

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Challenge: Aerial visionand-dialling navigation (AVDN) is a new approach to autonomous drones that can converse with humans and follow natural language commands to complete tasks.
Approach: They propose to use Aerial Visionand-Dialog Navigation (AVDN) to navigate a drone via natural language conversation by collecting a dataset of over 3k recorded navigation trajectories with asynchronous human-human dialogs between commanders and followers.
Outcome: The proposed system can converse with humans and follow natural language commands to fly to the expected destination.
Transcending Scaling Laws with 0.1% Extra Compute (2023.emnlp-main)

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Challenge: Existing scaling of language models is expensive and requires significant computational costs.
Approach: They propose a method that substantially improves existing language models and their scaling curves with a relatively tiny amount of extra compute.
Outcome: The proposed method significantly improves existing language models and their scaling curves with a relatively tiny amount of extra compute.
RESIN: A Dockerized Schema-Guided Cross-document Cross-lingual Cross-media Information Extraction and Event Tracking System (2021.naacl-demos)

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Challenge: We present a new information extraction system that can construct temporal event graphs from news documents.
Approach: They propose a temporal event graph extraction system that can extract news documents . they extend the system from sentence-level event extraction to cross-document cross-media event extraction .
Outcome: The proposed system can extract temporal event graphs from news documents in multiple languages and multiple data modalities.
SocialEval: Evaluating Social Intelligence of Large Language Models (2025.acl-long)

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Challenge: Existing work on LLMs does not address their social intelligence (SI) and their discrepancy with humans.
Approach: They propose a script-based bilingual SI benchmark that integrates outcome-oriented goal achievement evaluation and process-oriented interpersonal ability evaluation by manually crafting narrative scripts.
Outcome: The proposed model is based on a script-based bilingual evaluation paradigm that integrates outcome- and process-oriented evaluation by manually crafting narrative scripts.
RepEval: Effective Text Evaluation with LLM Representation (2024.emnlp-main)

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Challenge: Traditional metrics for automatic text evaluation are tailored to specific tasks, while LLM-based evaluation metrics are costly.
Approach: They propose a metric that leverages projections of LLM representations for evaluation.
Outcome: The proposed metric exhibits higher correlation with human judgments than previous methods on 14 datasets.
Learning Dynamic Contextualised Word Embeddings via Template-based Temporal Adaptation (2023.acl-long)

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Challenge: Existing methods for learning dynamic contextualised word embeddings do not capture temporal semantic variations of words.
Approach: They propose a method for learning DCWEs by time-adapting a pretrained Masked Language Model using time-sensitive templates.
Outcome: The proposed method significantly reduces the perplexity of test sentences in C2 outperforming the current state-of-the-art.
Cross-Lingual Dependency Parsing by POS-Guided Word Reordering (2020.findings-emnlp)

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Challenge: Existing approaches to cross-lingual dependency parsing rely on large corpus size and cost.
Approach: They propose a cross-lingual dependency parsing approach based on word reordering . they propose to train a model that transfers knowledge learned in one or multiple languages to target languages .
Outcome: The proposed approach outperforms the baseline approach in Hindi and Latin by 15.3% and 6.7%.
LongHeads: Multi-Head Attention is Secretly a Long Context Processor (2024.findings-emnlp)

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Challenge: Large language models struggle to process lengthy inputs due to limited length generalization and attention’s quadratic computational demands.
Approach: They propose a training-free framework that allows each head to attend to important context chunks instead of allowing each head a full sentence .
Outcome: The proposed framework unlocks multi-head attention's untapped potential by allowing each head to attend to important context chunks instead of the full sentence.
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.
Solving Cosine Similarity Underestimation between High Frequency Words by ℓ2 Norm Discounting (2023.findings-acl)

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Challenge: Existing methods to estimate cosine similarity between words have been proposed, but no solution has been proposed.
Approach: They propose a method to discount the l2 norm of contextualised word embedding by the frequency of that word in a corpus when measuring the cosine similarities between words.
Outcome: The proposed method underestimates the similarity scores between two words when used with contextualised token embeddings from masked language models such as BERT.
EverMemOS: A Self-Organizing Memory Operating System for Structured Long-Horizon Reasoning (2026.acl-long)

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Challenge: Existing memory systems for LLMs store isolated records and retrieve fragments . Existing systems store isolated data and fragments, limiting their ability to consolidate evolving experience and resolve conflicts.
Approach: They propose an engram-inspired memory operating system that implements an 'engram'-inspired lifecycle for computational memory.
Outcome: Experiments on LoCoMo, LongMemEval, and PersonaMeM-v2 show that EverMemeOS outperforms state-of-the-art methods on memory-augmented reasoning tasks.
ODE Transformer: An Ordinary Differential Equation-Inspired Model for Sequence Generation (2022.acl-long)

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Challenge: Residual networks are an Euler discretization of solutions to Ordinary Differential Equations (ODE).
Approach: They propose a residual block of layers in Transformer that can be described as a higher-order solution to ODE.
Outcome: The proposed architecture can gain large improvements over strong baselines at a slight cost in inference efficiency.
Constructing Procedural Graphs with Multiple Dependency Relations: A New Dataset and Baseline (2023.findings-acl)

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Challenge: Existing methods to structure procedural knowledge focus on representing descriptive knowledge but ignore another commonsense knowledge-Procedural Knowledge.
Approach: They propose to generate flow graphs from procedural documents by extracting sequential dependency between sentences and missing two important dependencies in procedural document.
Outcome: The proposed method can generate flow graphs from unstructured documents with syntactic information and discourse structures.
Low-probability Tokens Sustain Exploration in Reinforcement Learning with Verifiable Reward (2026.findings-acl)

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Challenge: Recent studies show that RLVR training is slow and results plateau as policy entropy collapses . low-probability regularization (Lp-Reg) reduces the number of low-quality exploratory tokens induced by RL training .
Approach: They propose a method to reduce RLVR over-penalization by eliminating low-probability exploratory tokens . they propose 'Low-provability Regularization' to reduce the gradual elimination of low-quality exploratory entropy tokens.
Outcome: The proposed method eliminates low-probability exploratory tokens and prevents suppression of potentially valuable low-property candidates.
Unsupervised Graph-Text Mutual Conversion with a Unified Pretrained Language Model (2023.acl-long)

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Challenge: Existing unsupervised approaches for learning knowledge graphs require multiple modules and require entity information or relation type for training.
Approach: They propose a method that uses a unified pretrained language model to achieve fully unsupervised graph-text mutual conversion for the first time.
Outcome: The proposed method outperforms state-of-the-art methods for G2T and T2G tasks by fine-tuning only one pretrained model.
On the Transferability of Adversarial Attacks against Neural Text Classifier (2021.emnlp-main)

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Challenge: Existing studies show that deep neural networks are vulnerable to adversarial examples . a small perturbation to an input alters the model prediction .
Approach: They propose a genetic algorithm to find models that can induce adversarial examples to fool models . they propose word replacement rules that can be used for model diagnostics from these examples .
Outcome: The proposed model can fool almost all existing models, while ignoring the data bias in the training set.
Neural Topic Modeling based on Cycle Adversarial Training and Contrastive Learning (2023.findings-acl)

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Challenge: Neural topic models have been widely used to extract common topics across documents.
Approach: They propose a framework to apply contrastive learning directly to the decoder . they propose 'self-supervised' contrastive loss to make the generator capture similar topic information .
Outcome: The proposed framework outperforms baselines on four benchmark datasets.
Autodive: An Integrated Onsite Scientific Literature Annotation Tool (2023.acl-demo)

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Challenge: Annotating scientific literature directly on PDF documents can greatly improve the labeling efficiency of scientists whose annotation costs are very high.
Approach: They propose an integrated onsite scientific literature annotation tool for natural scientists and Natural Language Processing (NLP) researchers.
Outcome: The proposed tool supports the whole lifecycle of corpus generation including i)project management, ii)resource management, and iv)ontology management, as well as manual annotation, onsite auto annotation, and vi)task statistic.
ToViLaG: Your Visual-Language Generative Model is Also An Evildoer (2023.emnlp-main)

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Challenge: Recent large-scale Visual-Language Generative Models (VLGMs) generate toxic content, e.g., offensive text and pornography images, raising significant ethical risks.
Approach: They propose a bottleneck-based detoxification method to reduce toxicity while maintaining comparable generation quality.
Outcome: The proposed method could reduce toxicity while maintaining comparable generation quality.
SWE-QA-Pro: A Representative Benchmark and Scalable Training Recipe for Repository-Level Code Understanding (2026.findings-acl)

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Challenge: Existing benchmarks for agentic repository-level code understanding overlook long tail topics and rely on memorized knowledge.
Approach: They propose a repository-level agentic code understanding benchmark that uses long-tail repositories with executable environments to enforce topical balance.
Outcome: Empirically, a Qwen3-8B model trained with the proposed benchmark outperforms GPT-4o by 2.3 points.
R3: End-to-End Reasoning-based Planning for Multi-step Retrosynthesis via Reinforcement Learning (2026.acl-long)

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Challenge: Experimental results show that R3 is a superior alternative to traditional search algorithms for multistep retrosynthesis planning.
Approach: They propose a framework that reformulates multistep retrosynthetic planning as a generative reasoning task.
Outcome: The proposed framework achieves state-of-the-art Top-1 accuracy of 43.7% on retrobench . it leverages Large Language Models to reformulate multistep retrosynthesis as a generative reasoning task.
ChatMusician: Understanding and Generating Music Intrinsically with LLM (2024.findings-acl)

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Challenge: Despite LLMs' impressive capabilities in musical knowledge, music reasoning remains an unsolved task.
Approach: They propose an open-source large language model (LLM) that integrates intrinsic musical abilities into LLaMA2 and GPT-3.5.
Outcome: The proposed model can understand and generate music with a pure text tokenizer without external multi-modal neural structures or tokenizers.
WorldCuisines: A Massive-Scale Benchmark for Multilingual and Multicultural Visual Question Answering on Global Cuisines (2025.naacl-long)

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Challenge: Vision Language Models struggle with cultural-specific knowledge, especially in languages other than English and in underrepresented cultural contexts.
Approach: They propose a visual question answering (VQA) dataset with text-image pairs across 30 languages and dialects and a training dataset.
Outcome: The proposed model performs better with correct location context, but struggles with adversarial contexts and predicting specific regional cuisines and languages.
DeepRTL2: A Versatile Model for RTL-Related Tasks (2025.findings-acl)

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Challenge: Integration of large language models into electronic design automation has been a key driver in eDA.
Approach: They propose a family of large language models that unifies generation- and embedding-based tasks related to RTL.
Outcome: The proposed model achieves state-of-the-art performance across all evaluated tasks.
DrKGC: Dynamic Subgraph Retrieval-Augmented LLMs for Knowledge Graph Completion across General and Biomedical Domains (2025.findings-emnlp)

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Challenge: Knowledge graph completion (KGC) aims to predict missing triples in knowledge graphs . current approaches encode graph context in textual form, which fails to exploit its potential .
Approach: a new method is proposed to predict missing triples in knowledge graphs by leveraging existing triples and textual information.
Outcome: The proposed model learns structural embeddings and logical rules within the KG and extracts a subgraph for each query guided by the learned rules.
FaStFact: Faster, Stronger Long-Form Factuality Evaluations in LLMs (2025.findings-emnlp)

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Challenge: Prior evaluation pipelines fail to evaluate factuality of long-form LLMs due to inefficiency and costly human assessment.
Approach: They propose a fast and strong evaluation pipeline that can evaluate factuality of long-form LLMs . they propose 'faStFact' to reduce cost of web searching and inference calling .
Outcome: The proposed evaluation pipeline achieves highest alignment with human evaluation and efficiency among existing baselines.
AutoSchemaKG: Autonomous Knowledge Graph Construction through Dynamic Schema Induction from Web-Scale Corpora (2026.acl-long)

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Challenge: Existing knowledge graph construction frameworks require predefined schemas, limiting their scalability and domain coverage.
Approach: They propose a framework for fully autonomous knowledge graph construction that eliminates the need for predefined schemas.
Outcome: The proposed framework outperforms state-of-the-art models on multi-hop QA tasks and enhances LLM factuality.
Uncertainty-Aware Iterative Preference Optimization for Enhanced LLM Reasoning (2025.acl-long)

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Challenge: Existing methods for enhancing the performance of large language models require expensive manual annotations.
Approach: They propose an offline direct preference optimization method that collects preference pairs through iterative sampling and execution feedback to improve model confidence.
Outcome: The proposed method improves performance on three reasoning tasks and shows a 3.6% improvement over the standard method.
Deep Equilibrium Non-Autoregressive Sequence Learning (2023.findings-acl)

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Challenge: et al., 2017) is the most prevailing neural architecture for sequence-to-sequence learning.
Approach: They propose to solve for the equilibrium state of NAR models with black-box root-finding solvers and back-propagate through the equilibrium point via implicit differentiation with constant memory.
Outcome: The proposed framework can converge to a more accurate prediction on four WMT benchmarks.
Unsupervised Extractive Summarization by Pre-training Hierarchical Transformers (2020.findings-emnlp)

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Challenge: Existing methods for document summarization use graphs and unlabeled documents . Existing models require labeled data, and it is expensive to create summarized documents.
Approach: They propose to rank sentences using transformer attentions and pre-training objectives by unlabeled documents.
Outcome: The proposed model achieves state-of-the-art on unsupervised summarization and is less dependent on sentence positions.
Do Transformer Modifications Transfer Across Implementations and Applications? (2021.emnlp-main)

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Challenge: Currently, the Transformer is the de facto architecture of choice for processing sequential data.
Approach: They evaluate the Transformer architecture and its modifications in a shared experimental setting . they conjecture that performance improvements may strongly depend on implementation details .
Outcome: The proposed improvements do not significantly improve performance, the authors find . the proposed improvements are either developed in the same codebase or are minor changes .
Causal-Debias: Unifying Debiasing in Pretrained Language Models and Fine-tuning via Causal Invariant Learning (2023.acl-long)

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Challenge: Existing methods to remove unwanted stereotypical associations from pretrained language models (PLMs) are often focused on removing unwanted stereotypes from PLMs.
Approach: They propose a framework to remove unwanted stereotypical associations in pretrained language models . they propose bias-relevant factors are causal, while labelrelevant factors causal .
Outcome: The proposed framework reduces stereotypical associations after PLMs are fine-tuned . the proposed framework mitigates bias from a causal invariant perspective .
Defense against Synonym Substitution-based Adversarial Attacks via Dirichlet Neighborhood Ensemble (2021.acl-long)

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Challenge: Recent studies show vulnerability of deep neural networks to adversarial examples that intentionally fool the networks.
Approach: They propose a method for training a robust model to defense synonym substitution-based attacks by sampling embedding vectors for each word in an input sentence and augmenting them with the training data.
Outcome: The proposed method outperforms other proposed defense methods by a significant margin across different network architectures and multiple data sets.
Challenging BIG-Bench Tasks and Whether Chain-of-Thought Can Solve Them (2023.findings-acl)

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Challenge: Language models have already made good progress on this benchmark, with the best model outperforming average reported human-rater results on 65% of the BIG-Bench tasks.
Approach: They propose to use chain-of-thought prompting to challenge language models on 23 challenging BIG-Bench tasks which they call BIG-Bench Hard.
Outcome: The proposed language models outperform the average human-rater on 65% of the BIG-Bench tasks.
Exploring and Verbalizing Academic Ideas by Concept Co-occurrence (2023.acl-long)

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Challenge: a new framework for academic idea inspiration is being developed for academic research assistants . number of academic publications is increasing exponentially, making it difficult for an independent researcher to understand these papers thoroughly.
Approach: They propose a framework based on concept co-occurrence for academic idea inspiration . they construct evolving concept graphs according to the co-existence relationship of concepts from 20 disciplines or topics .
Outcome: The proposed system can be used to explore connections between academic concepts and verbalize the new ideas.
Joint Modeling of Structure Identification and Nuclearity Recognition in Macro Chinese Discourse Treebank (C18-1)

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Challenge: Discourse parsing is a challenging task and plays a critical role in discourse analysis.
Approach: They propose a macro discourse structure presentation schema to present the macro level discourse structure analysis.
Outcome: The proposed corpus is based on two tasks of macro discourse structure analysis, including structure identification and nuclearity recognition.
FluentSpeech: Stutter-Oriented Automatic Speech Editing with Context-Aware Diffusion Models (2023.findings-acl)

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Challenge: Existing methods for speech editing still suffer from over-smoothing problem and lack of robustness due to stutter.
Approach: They propose a stutter-oriented automatic speech editing model that incorporates sutter information into the hidden sequence.
Outcome: The proposed model achieves state-of-the-art performance on a speech recording dataset . it can improve fluency of stuttering speech in terms of objective and subjective metrics.
Action-Based Conversations Dataset: A Corpus for Building More In-Depth Task-Oriented Dialogue Systems (2021.naacl-main)

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Challenge: Existing goal-oriented dialogue datasets focus on identifying slots and values, but in reality, customer service agents follow multi-step procedures derived from explicit company policies.
Approach: They propose to use a fully-labeled dataset to study customer service dialogue systems in real-world scenarios.
Outcome: The proposed dataset outperforms existing models but still lacks 50.8% absolute accuracy to reach human-level performance on the dataset.
ChatVLA: Unified Multimodal Understanding and Robot Control with Vision-Language-Action Model (2025.emnlp-main)

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Challenge: Recent advances in vision-language-action models prioritize robotic action mastery . however, models trained on visual-text pairs struggle to interpret multimodal data .
Approach: They propose a framework that integrates multimodal data after initial control mastery and a Mixture-of-Experts architecture to minimize task interference.
Outcome: The proposed framework surpasses state-of-the-art vision-language-action (VLA) methods on multimodal understanding benchmarks and achieves six times higher performance on visual question-answering datasets.
Together We Make Sense–Learning Meta-Sense Embeddings (2023.findings-acl)

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Challenge: Existing sense embeddings do not cover all senses of ambiguous words equally well due to discrepancies in their training resources.
Approach: They propose a meta-sense embedding method that preserves sense neighbourhoods by combining multiple independently trained source sense embeddables.
Outcome: The proposed method outperforms several baselines on Word Sense Disambiguation and Word-in-Context tasks.
Fin-STAR: Structure-as-Semantics to Resolve Implicitness in Financial Retrieval (2026.findings-acl)

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Challenge: Existing Retrieval-Augmented Generation systems treat structure as a physical navigational skeleton rather than intrinsic semantic knowledge.
Approach: They propose a framework that redefining hierarchy as intrinsic semantics and uses snippets to enrich hierarchical lineage.
Outcome: The proposed framework outperforms state-of-the-art hierarchical and graph-based benchmarks on FinTierQA Gold.
Evaluating Short-Term Temporal Fluctuations of Social Biases in Social Media Data and Masked Language Models (2024.emnlp-main)

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Challenge: Social biases such as gender or racial biase are reported in language models . a recent study has shown that MLMs encode discriminatory social biase .
Approach: They analyse temporal corpora of MLMs trained on chronologically ordered temporal snapshots . they find that gender and racial biases are encoded in MLM models .
Outcome: The proposed model identifies gender biases in MLMs but most remain stable over time . gender bias is associated with higher likelihood scores in some demographic groups .
Language Models can Evaluate Themselves via Probability Discrepancy (2024.findings-acl)

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Challenge: Existing evaluation frameworks focus on superficial text differences and fail to align with human judgment.
Approach: They propose a new method to evaluate the performance of Large Language Models (LLMs) by calculating probability discrepancies between original response generation and revised versions of LLMs.
Outcome: The proposed method eliminates the need for training an additional evaluation model or relying on external proprietary models such as GPT-4 as a judger.
Sense Embeddings are also Biased – Evaluating Social Biases in Static and Contextualised Sense Embeddings (2022.acl-long)

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Challenge: Existing studies have evaluated social biases in word embeddings, but they are understudied.
Approach: They propose to evaluate the social biases in sense embeddings using a benchmark dataset for word embedders.
Outcome: The proposed measures show that even when no biases are found at word-level, there are still worrying levels of social biase at sense-level which are often ignored by the word- level bias evaluation measures.
Eliminating Sentiment Bias for Aspect-Level Sentiment Classification with Unsupervised Opinion Extraction (2021.findings-emnlp)

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Challenge: Aspect-level sentiment classification (ALSC) is a practical setting in aspect-based sentiment analysis due to no opinion term labeling needed, but it fails to interpret why a sentiment polarity is derived for the aspect.
Approach: They propose a span-based anti-bias aspect representation learning framework that eliminates the sentiment bias in the aspect embedding by adversarial learning against aspects’ prior sentiment.
Outcome: The proposed framework achieves state-of-the-art performance on five benchmarks, with the capability of unsupervised opinion extraction.
Making Harmful Behaviors Unlearnable for Large Language Models (2024.findings-acl)

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Challenge: Large language models (LLMs) are often customized by fine-tuning for the requirements of different domains.
Approach: They propose a controllable training framework to make undesired behaviors unlearnable during the fine-tuning process.
Outcome: The proposed framework makes undesired behaviors unlearnable during the fine-tuning process while preserving the ability to learn other information.
CLAPSpeech: Learning Prosody from Text Context with Contrastive Language-Audio Pre-Training (2023.acl-long)

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Challenge: Existing methods for expressive text-to-speech only implicitly learn prosody with masked token reconstruction tasks.
Approach: They propose a cross-modal contrastive pre-training framework that learns from prosody variance of the same text token under different contexts.
Outcome: The proposed framework can learn from prosody variance of a text token under different contexts.
CharacterGLM: Customizing Social Characters with Large Language Models (2024.emnlp-industry)

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Challenge: Character-based dialogue systems (CharacterDial) allow users to customize social characters for social interactions.
Approach: They will collect a large-scale Chinese corpus of characters with diverse categories and behaviors and develop CharacterGLM models to address these challenges.
Outcome: Experiments show that CharacterGLM outperforms most popular open- and closed-source LLMs and performs comparable to GPT-4.
A Critical Analysis of Document Out-of-Distribution Detection (2023.findings-emnlp)

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Challenge: Existing document understanding models focus on single-modal inputs such as images or texts.
Approach: They propose to use a spatial-aware adapter to adapt transformer-based language models to document domain to exploit multi-modal information.
Outcome: The proposed model significantly improves the OOD detection performance compared to using a standard language model and to competitive baselines.
Learning the Beauty in Songs: Neural Singing Voice Beautifier (2022.acl-long)

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Challenge: Existing techniques for pitch correction are limited to intonation but ignore the overall aesthetic quality.
Approach: They propose a novel time-warping approach for pitch correction to synchronize the amateur recording with the template pitch curve.
Outcome: The proposed model improves intonation and vocal tone while keeping content and vocal timbre.
Continual Relation Learning via Episodic Memory Activation and Reconsolidation (2020.acl-main)

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Challenge: Existing methods to learn incessantly emerging novel relations are overfitting the few memorized examples of old relations, causing confusion among existing relations.
Approach: They introduce episodic memory activation and reconsolidation (EMAR) to continual relation learning.
Outcome: The proposed method outperforms state-of-the-art models in catastrophic forgetting old relations.
Learning Query Adaptive Anchor Representation for Inductive Relation Prediction (2023.findings-acl)

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Challenge: Existing methods to infer the missing links between entities are limited to the transductive setting . Query Adaptive Anchor Representation (QAAR) model is based on entity-independent features .
Approach: They propose a query adaptive anchor representation model which extracts one opening subgraph and performs reasoning by one time for all candidate triples.
Outcome: The proposed model outperforms state-of-the-art models in relation prediction task.
SPIO: Ensemble and Selective Strategies via LLM-Based Multi-Agent Planning in Automated Data Science (2026.acl-long)

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Challenge: Large Language Models (LLMs) have enabled dynamic reasoning in automated data analytics, but rigid, single-path workflows restrict strategic exploration and often lead to suboptimal outcomes.
Approach: a new framework replaces rigid workflows with adaptive, multi-path planning . the framework offers two operating modes: SPIO-S and SPIO -E .
Outcome: a new framework outperforms state-of-the-art pipelines on Kaggle and OpenML benchmarks.
TablePilot: Recommending Human-Preferred Tabular Data Analysis with Large Language Models (2025.acl-industry)

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Challenge: Tabular data analysis is crucial in many scenarios, yet its complexity and density can make it challenging to determine the most appropriate analysis operations for a new table.
Approach: They propose a tabular data analysis framework that recommends query-code-result triplets for new tables . they propose Rec-Align, a method to further improve recommendation quality .
Outcome: The proposed framework achieves 77.0% top-5 recommendation recall on a dataset designed for tabular data analysis recommendation.
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.
Perturbation-driven Dual Auxiliary Contrastive Learning for Collaborative Filtering Recommendation (2025.coling-main)

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Challenge: Existing contrastive learning-based methods struggle with data sparsity in real-world recommendations . Graph collaborative filtering incorporates contrastive training as an auxiliary task to improve performance .
Approach: They propose a perturbation-driven dual auxiliary contrastive learning task for collaborative filtering . structure perturbation and weight perturbation are used to construct two graphs .
Outcome: The proposed model outperforms benchmark models on multiple public datasets.
OAgents: An Empirical Study of Building Effective Agents (2025.findings-emnlp)

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Challenge: a recent study shows that agent research practices are far from standard, rigorous . lack of a standard evaluation protocol makes previous works not reproducible, authors say .
Approach: They conduct an empirical study on the GAIA benchmark to investigate agent design choices . they find that lack of a standard evaluation protocol makes previous works not reproducible .
Outcome: The proposed framework achieves state-of-the-art performance among open-source projects.
AV-TranSpeech: Audio-Visual Robust Speech-to-Speech Translation (2023.acl-long)

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Challenge: Existing models for speech-to-speech translation suffer from distinct degradation in noisy environments and fail to translate visual speech.
Approach: They propose a text-based audio-visual speech-to-speech translation model that integrates visual information with audio-only data to improve system robustness.
Outcome: The proposed model outperforms models trained on audio-only corpus in two languages . it also improves with low-resource audio-visual data, compared with baselines .
A Predictive Factor Analysis of Social Biases and Task-Performance in Pretrained Masked Language Models (2023.emnlp-main)

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Challenge: Various types of social biases have been reported with pretrained Masked Language Models (MLMs) in prior work.
Approach: They conduct a comprehensive study on 39 pretrained MLMs to examine their model factors and their social biases.
Outcome: The proposed model factors influence social biases learned by an MLM and their downstream task performance.
Different Tunes Played with Equal Skill: Exploring a Unified Optimization Subspace for Parameter-Efficient Tuning (2022.findings-emnlp)

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Challenge: Existing delta tuning algorithms freeze most of the parameters and only optimize minimal adaptive parameters.
Approach: They propose to decompose DETs into a unified optimization subspace and conduct optimization within the subspace.
Outcome: The proposed DETs achieve comparable performance to the original DET and can be transferred to another DET with non-trivial performance.
Exploring and Distilling Multi-Dimensional Clues for Interpretable Social Bot Detection (2026.acl-long)

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Challenge: Existing research on social bot detection results directly without corresponding supportive explanations, making it difficult to assess the extent to which such predictions are trustworthy.
Approach: They propose a four-dimensional clue framework that uses outcome-reward reinforcement learning to train inspectors to generate faithful, grounded clues from user information, semantic features, interactive situation, and behavioral pattern.
Outcome: The proposed framework outperforms baselines in detection performance and significantly improves the performance of large language models.
On the Curious Case of l2 norm of Sense Embeddings (2022.findings-emnlp)

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Challenge: l2 norm of sense embeddings encodes information related to frequency of that sense in the training corpus . l2-normal feature is useful for word-in-context (WiC) and word sense disambiguation (WSD)
Approach: They propose to include the l2 norm of a sense embedding as a feature in a classifier to improve word sense learning methods that use static sense embeds.
Outcome: The l2 norm of sense embeddings is a surprisingly effective feature for word sense related tasks such as word-in-context (WiC) and word sense disambiguation (WSD).
OneRec-Think: In-Text Reasoning for Generative Recommendation (2026.acl-long)

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Challenge: Existing generative models lack the capacity for explicit and controllable reasoning, a key advantage of LLMs.
Approach: They propose a framework that integrates dialogue, reasoning, and personalized recommendation.
Outcome: Experiments across public benchmarks show state-of-the-art performance.
Improving Entity Linking through Semantic Reinforced Entity Embeddings (2020.acl-main)

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Challenge: Existing entity embeddings are effective, but too distinctive for linking models to learn contextual commonality.
Approach: They propose a method to inject fine-grained semantic information into entity embeddings . they use word embedds of type words to generate semantic embeddngs based on existing embeddables a sample of semantic information is injected into the embedded entities .
Outcome: The proposed method reduces the distinctiveness of existing embeddings and improves performance.
Why Did the Chicken Cross the Road? Rephrasing and Analyzing Ambiguous Questions in VQA (2023.acl-long)

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Challenge: Visual question answering models seek to answer questions about images . ambiguity can exist at all levels of linguistic analysis, but disagreements can be difficult to detect and resolve .
Approach: They develop a question-generation model which integrates group information without supervision and uses a dataset of ambiguous examples to annotate answers.
Outcome: The proposed model can integrate answer group information without supervision and is able to fill knowledge gaps and convey requests.
Do LVLMs Understand Charts? Analyzing and Correcting Factual Errors in Chart Captioning (2024.findings-acl)

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Challenge: LVLMs are known for producing text that is factually inconsistent with visual input . factuality of generated captions for structured visuals has not been studied as much .
Approach: They propose a typology of factual errors in captions generated by large vision-language models . they propose CHOCOLATE, a visual entailment model that outperforms current models based on this analysis .
Outcome: The proposed model outperforms current models in evaluating caption factuality.
DPWriter: Reinforcement Learning with Diverse Planning Branching for Creative Writing (2026.acl-long)

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Challenge: Existing methods for enhancing large language models (LLMs) lack explicit mechanisms for guiding diverse exploration and instead prioritize efficiency and performance over diversity.
Approach: They propose a reinforcement learning-based framework that decomposes the generation process into explicitly planned intermediate steps and introduces divergence at the planning phase based on diversity variation.
Outcome: The proposed method significantly outperforms existing baselines on creative writing benchmarks on a semi-structured long chain-of-thought (CoT) it introduces divergence at the planning phase based on diversity variation, alongside a group-aware diversity reward to encourage distinct trajectories.
Evaluating the Effect of Retrieval Augmentation on Social Biases (2026.eacl-long)

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Challenge: RAG is a popular method for injecting up-to-date knowledge into LLMs.
Approach: They examine how RAG modulates social biases across three languages and four categories . they find that biased documents are amplified even when base LLM has low-level of intrinsic bias .
Outcome: The proposed method can enhance factual accuracy but its effect on social biases is not well understood.
Efficient Multilingual Language Model Compression through Vocabulary Trimming (2023.findings-emnlp)

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Challenge: Multilingual language models (LMs) have become a powerful tool in NLP, especially for non-English languages.
Approach: They propose a method to reduce a multilingual LM vocabulary to a target language by deleting potentially irrelevant tokens from its vocabulary.
Outcome: The proposed method can retain the original performance of the multilingual LM while being considerably smaller in size than the original model.
DialogVED: A Pre-trained Latent Variable Encoder-Decoder Model for Dialog Response Generation (2022.acl-long)

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Challenge: Existing pre-trained dialog models shed light on various downstream tasks in natural language processing (NLP).
Approach: They propose a dialog pre-training framework that introduces latent variables into the enhanced encoder-decoder pre-train framework to increase relevance and diversity of responses.
Outcome: The proposed model achieves state-of-the-art on personaChat, DailyDialog, and DSTC7-AVSD datasets.
Enhanced Chart Understanding via Visual Language Pre-training on Plot Table Pairs (2023.findings-acl)

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Challenge: Existing methods to understand chart plots are difficult to apply to visual-language tasks.
Approach: They propose a V+L model that learns how to interpret table information from chart images via cross-modal pre-training on plot table pairs.
Outcome: The proposed model outperforms state-of-the-art models on the chartQA benchmark by over 8% performance gains.
Synapse: Empowering LLM Agents with Episodic-Semantic Memory via Spreading Activation (2026.findings-acl)

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Challenge: Large Language Models excel at generalized reasoning, but lack the ability to accumulate experiences and maintain narrative coherence over long horizons.
Approach: They propose a unified memory architecture that transcends static vector similarity.
Outcome: The proposed model outperforms state-of-the-art methods in temporal and multihop reasoning tasks.
TextObfuscator: Making Pre-trained Language Model a Privacy Protector via Obfuscating Word Representations (2023.findings-acl)

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Challenge: Existing inference services are plagued by privacy concerns, such as sharing sensitive data with service providers.
Approach: They propose a framework for protecting inference privacy by applying random perturbations to clustered representations.
Outcome: The proposed framework protects inference privacy by applying random perturbations to clustered representations.
Diverse Few-Shot Text Classification with Multiple Metrics (N18-1)

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Challenge: Existing methods for few-shot learning are insufficient to capture task variations in natural language domains.
Approach: They propose an adaptive metric learning approach that automatically determines the best weighted combination from a set of metrics obtained from meta-training tasks for a newly seen few-shot task.
Outcome: The proposed method performs favorably against state-of-the-art few shot learning algorithms on real-world sentiment analysis and dialog intent classification datasets.
Prosody-TTS: Improving Prosody with Masked Autoencoder and Conditional Diffusion Model For Expressive Text-to-Speech (2023.findings-acl)

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Challenge: Expressive text-to-speech aims to generate high-quality samples with rich prosody . prosodic attributes in highly dynamic voices are difficult to capture and model without intonation .
Approach: They propose a pipeline that enhances prosody modeling and sampling by introducing a self-supervised masked autoencoder and a diffusion model to sample diverse prosodic patterns within the latent space.
Outcome: The proposed pipeline achieves new state-of-the-art in text-to-speech with natural and expressive synthesis.
Rhombus: Incentivizing Coordination in Parallel Thinking through Reinforcement Learning (2026.findings-acl)

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Challenge: Parallel thinking is a promising avenue for scaling test-time compute in Large Language Models . however, coordinating the exploration and aggregation stages remains challenging .
Approach: They propose a parallel thinking framework that explicitly incentivizes coordination between components via end-to-end reinforcement learning.
Outcome: The proposed framework improves accuracy by 6.0% over long chain-of-thought baselines while reducing wall-clock latency by 39.4% under matched token budgets.
Conic10K: A Challenging Math Problem Understanding and Reasoning Dataset (2023.findings-emnlp)

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Challenge: Existing benchmarks or datasets require only a few steps of reasoning, making it difficult to analyse AI’s behaviour with reference to different problems within a specific topic in detail.
Approach: They propose a conic10K math problem dataset that requires only a few steps of reasoning to be analysed.
Outcome: The proposed dataset shows that existing language models exhibit weak performance on complex reasoning.

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