Papers by Yuxiang Liu

39 papers
RSMeM: Knowledge-Enhanced Memory Evolution for Remote Sensing Agents with Systematic Evaluation (2026.acl-long)

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Challenge: Existing RS agents built on general-purpose LLMs are domain-agnostic, resulting in brittle and error-prone workflows.
Approach: They propose a knowledge-enhanced memory evolution mechanism that bootstraps RS agents with pre-distilled domain knowledge and iteratively integrates online experience for robust multi-step tool execution.
Outcome: Experiments show that the new model improves tool-use performance and accuracy . iteratively, iteration of the model integrates online experience for robust multi-step tool execution .
Ask To The Point: Open-Domain Entity-Centric Question Generation (2023.findings-emnlp)

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Challenge: *entity-centric question generation (ECQG) is a task motivated by real-world applications such as topic-specific learning, assisted reading, and fact-checking.
Approach: They propose a PLM-based framework GenCONE with two modules: content focusing and question verification.
Outcome: The proposed framework outperforms baselines and is effective and complementary in generating high-quality questions.
PAQ: 65 Million Probably-Asked Questions and What You Can Do With Them (2021.tacl-1)

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Challenge: Open-domain Question Answering models that directly leverage question-answer (QA) pairs show promise in terms of speed and memory compared with conventional models which retrieve and read from text corpora.
Approach: They propose a question-answer (QA)-pair retriever to facilitate improved QA-patch models by introducing Probably Asked Questions (PAQ) they propose QA pair retriever, RePAQ, which preempts and caches test questions, enabling it to match the accuracy of recent retrieve-and-read models, whilst being significantly faster.
Outcome: The proposed model outperforms baseline models by 5% but trails RePAQ by 15% . it can be configured for size (under 500MB) or speed (over 1K questions per second) while retaining high accuracy.
SILC-EFSA: Self-aware In-context Learning Correction for Entity-level Financial Sentiment Analysis (2025.coling-main)

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Challenge: Currently, most sentiment analysis corpora use sequence-level annotation.
Approach: They propose a two-stage approach to financial entity-level sentiment analysis called Self-aware In-context Learning Correction.
Outcome: The proposed approach achieves state-of-the-art on the largest English and Chinese financial entity-level sentiment analysis datasets to date.
ToolBeHonest: A Multi-level Hallucination Diagnostic Benchmark for Tool-Augmented Large Language Models (2024.emnlp-main)

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Challenge: Currently, tool-augmented large language models (LLMs) only achieve total scores of 45.3 and 37.0, respectively, on a scale of 100.
Approach: They propose a multi-level diagnostic process to assess the LLM's hallucinations through two perspectives: depth and breadth.
Outcome: The proposed diagnostic process assesses the hallucinations of large language models through two perspectives: depth and breadth.
GEMS: Generation-Based Event Argument Extraction via Multi-perspective Prompts and Ontology Steering (2025.findings-acl)

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Challenge: Existing methods for event argument extraction rely on a single prompt . existing methods ignore complex structural and dynamic interdependencies between event arguments .
Approach: They propose a multi-prompt learning framework that generates event arguments via multi-perspective prompts and ontology steering.
Outcome: The proposed framework captures interrelationships between arguments and ontology steering . it uses multiple unfilled prompts for each sentence to generate event arguments .
Balancing Knowledge Breadth and Task Depth for Effective Domain Adaptation Fine-Tuning (2026.findings-acl)

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Challenge: a lack of knowledge breadth and task depth can hinder curriculum learning in domains such as medicine and finance.
Approach: They propose a two-dimensional curriculum learning framework that coordinates model training along two orthogonal axes: the knowledge dimension and the task dimension.
Outcome: The proposed framework improves accuracy on medical evaluations by 2.49% and on financial evaluations 1.2% compared with the second-best method.
APB: Accelerating Distributed Long-Context Inference by Passing Compressed Context Blocks across GPUs (2025.acl-long)

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Challenge: Long-context inference is crucial for advancing large language models, but its prefill speed remains a bottleneck.
Approach: They propose an efficient long-context inference framework that leverages multi-host approximate attention to enhance prefill speed.
Outcome: The proposed framework achieves speedups of 9.2, 4.2, and 1.6 without any degradation in performance.
STORM-BORN: A Challenging Mathematical Derivations Dataset Curated via a Human-in-the-Loop Multi-Agent Framework (2025.findings-acl)

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Challenge: Existing datasets suffer from outdated and insufficient challenging content, neglecting human-like reasoning, and limited reliability due to single-LLM generation.
Approach: They propose a human-in-the-loop, multi-agent data generation framework that integrates reasoning-dense filters, multiagent collaboration, and human mathematicians’ evaluations to ensure the reliability and quality of the dataset.
Outcome: The proposed framework improves accuracy and quality of the 2,000-synthesized datasets by integrating reasoning-dense filters, multi-agent collaboration, and human mathematicians’ evaluations.
\mathcal XFT: Unlocking the Power of Code Instruction Tuning by Simply Merging Upcycled Mixture-of-Experts (2024.acl-long)

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Challenge: Existing studies focus on the data perspectives of instruction tuning, leaving room for exploring advanced training schemes.
Approach: They argue that prior works overlook the possibility of improving code instruction tuning by advancing existing training schemes.
Outcome: The proposed model is dense because all parameters are activated to predict the next token (assuming it is a decoder-only LLM).
Ouroboros: Generating Longer Drafts Phrase by Phrase for Faster Speculative Decoding (2024.emnlp-main)

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Challenge: Speculative decoding is a widely used method that accelerates the generation process of large language models (LLMs) drafting efficiency has become a bottleneck in the final speedup of speculative drafting, therefore generating longer drafts at less cost can lead to better speedup.
Approach: They propose a method that uses existing model to drafting and target LLM to verify draft in a low-cost parallel manner.
Outcome: The proposed method can achieve speedups of up to 2.4 over speculative decoding and 3.9 over vanilla decoding without fine-tuning draft and target models.
DeepResearcher: Scaling Deep Research via Reinforcement Learning in Real-world Environments (2025.emnlp-main)

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Challenge: Large Language Models (LLMs) with web search capabilities show significant potential for deep research.
Approach: They introduce a framework for end-to-end training of LLM-based deep research agents . they implement a specialized multi-agent architecture where browsing agents extract relevant information from various webpage structures.
Outcome: The proposed framework improves on open-domain research tasks by 28.9 points over prompt engineering and 7.2 points over RAG-based RL agents.
APB-V: Accelerating Long-Video Understanding via Sequence-Parallelism-aware Approximate Attention (2026.acl-long)

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Challenge: Existing methods for long-video inference use compression or sparse attention . existing methods restrict LMMs from handling longer, more complex videos .
Approach: They propose a sequence-parallel framework with optimized attention that accelerates long-video inference across multiple GPUs.
Outcome: The proposed framework delivers speedups of 12.72x, 1.70x, and 1.18x over FlashAttn, ZigZagRing, and APB without significant performance loss.
AMEX: Android Multi-annotation Expo Dataset for Mobile GUI Agents (2025.findings-acl)

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Challenge: a new dataset is being developed to improve the capabilities of mobile GUI-control agents.
Approach: They propose a dataset designed for generalist mobile GUI-control agents . they use screenshots from popular mobile applications to create a detailed GUI-annotated dataset .
Outcome: The Android Multi-annotation EXpo (AMEX) is a large-scale dataset for generalist mobile GUI-control agents . it includes screenshots from popular mobile applications, which are annotated at multiple levels .
DRAGON: Domain-specific Robust Automatic Data Generation for RAG Optimization (2026.findings-eacl)

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Challenge: Existing retrieval-augmented generation paradigms rely heavily on public knowledge . Existing RAGs reliant on public information and often falter when faced with domain-specific queries.
Approach: They propose a framework that combines a data-construction modeling approach with a scalable synthetic data-generation pipeline to optimize domain-specific retrieval performance.
Outcome: The proposed framework optimizes domain-specific retrieval performance and bolsters retriever robustness.
FR-Spec: Accelerating Large-Vocabulary Language Models via Frequency-Ranked Speculative Sampling (2025.acl-long)

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Challenge: Speculative sampling is an efficient way to accelerate the auto-regressive generation process of large language models.
Approach: They propose a frequency-ranked speculative sampling framework that optimizes draft candidate selection through vocabulary space compression.
Outcome: Experiments show that FR-Spec reduces LM Head computation overhead by 75% while ensuring the equivalence of the final output distribution.
TempCompass: Do Video LLMs Really Understand Videos? (2024.findings-acl)

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Challenge: Existing benchmarks on video large language models lack a comprehensive feedback on temporal perception ability . current models cannot distinguish between different temporal aspects and are limited in task formats .
Approach: They propose a benchmark to evaluate temporal perception ability of video large language models . they construct conflicting videos that share the same static content but differ in a specific temporal aspect .
Outcome: The proposed benchmarks show that video large language models exhibit poor temporal perception ability.
LearnAct: Few-Shot Mobile GUI Agent with a Unified Demonstration Benchmark (2026.findings-acl)

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Challenge: Mobile GUI agents show promise in automating tasks but face significant generalization challenges in long-tail scenarios.
Approach: They propose a benchmark framework for mobile GUI agents that measures the performance of GUI agents by analyzing their performance.
Outcome: The LearnGUI benchmark outperforms existing methods in offline and online evaluations and demonstrates consistent gains across model architectures.
FaiMA: Feature-aware In-context Learning for Multi-domain Aspect-based Sentiment Analysis (2024.lrec-main)

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Challenge: Existing methods for aspect-based sentiment analysis are limited and integrating with existing techniques is difficult.
Approach: They propose a framework that utilizes in-context learning as a feature-aware mechanism that facilitates adaptive learning in multi-domain ABSA tasks.
Outcome: The proposed framework achieves significant performance improvements in multiple domains compared to baselines, increasing F1 by 2.07% on average.
A3: Android Agent Arena for Mobile GUI Agents with Essential-State Procedural Evaluation (2026.findings-acl)

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Challenge: Existing evaluation methods for mobile GUI agents rely on static frame assessments or offline static apps.
Approach: They propose an evaluation system that leverages large language models as reward models to verify task completion and process achievement.
Outcome: The proposed system addresses the limitations of traditional function based evaluation methods on online dynamic apps.
Guided by the Plan: Enhancing Faithful Autoregressive Text-to-Audio Generation with Guided Decoding (2026.eacl-long)

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Challenge: Autoregressive (AR) models excel at generating temporally coherent audio by producing tokens sequentially, yet they often falter in faithfully following complex textual prompts.
Approach: They propose a lightweight auxiliary model trained with a GAE-inspired objective to predict final instruction-following quality from partial generations.
Outcome: The proposed model achieves 10 points improvement in CLAP score over baseline AR models while maintaining computational parity with best-of-N decoding.
Negative-Aware Diffusion Process for Temporal Knowledge Graph Extrapolation (2026.findings-eacl)

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Challenge: Temporal Knowledge Graphs (TKGs) are dynamic structures representing entities and their evolving relationships through time.
Approach: They propose a non-parametric model that encodes subject-centric histories into sequential embeddings.
Outcome: The proposed model encodes subject-centric histories of entities, relations and temporal intervals into sequential embeddings.
OlympiadBench: A Challenging Benchmark for Promoting AGI with Olympiad-Level Bilingual Multimodal Scientific Problems (2024.acl-long)

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Challenge: Large Language Models (LLMs) and Large Multimodal Models have exceeded general human capabilities in various tasks.
Approach: They present an Olympiad-level bilingual multimodal scientific benchmark featuring 8,476 problems from Olympiad level mathematics and physics competitions.
Outcome: The best performing model, GPT-4V, attains an average score of 17.97% on OlympiadBench, with a mere 10.74% in physics, highlighting the benchmark rigor and the intricacy of physical reasoning.
Black-Box Tuning of Vision-Language Models with Effective Gradient Approximation (2023.findings-emnlp)

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Challenge: Large vision-language models are often not open-source due to preventing abuse or commercial factors.
Approach: They propose a method for parameter-efficient fine-tuning to improve model accessibility . large models are often not open-source due to preventing abuse or commercial factors . they propose implementing a lightweight adapter over the output feature of an inaccessible model .
Outcome: The proposed methods improve on 11 benchmarks and are made publicly available.
SAFETY-J: Evaluating Safety with Critique (2024.findings-emnlp)

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Challenge: Current methods focus on binary safety classifications and lack detailed critique, limiting their utility for model improvement and user trust.
Approach: They propose a bilingual generative safety evaluator for English and Chinese with critique-based judgment that utilizes a robust training dataset and augmented query-response pairs to assess safety across various scenarios comprehensively.
Outcome: The proposed model improves safety evaluations by assessing the quality of critiques with minimal human intervention.
OpenResearcher: Unleashing AI for Accelerated Scientific Research (2024.emnlp-demo)

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Challenge: Global scientific publications are growing annually by about 4%-5% (Pinedo et al., 2024).
Approach: They introduce an AI-assisted platform that answers diverse questions from researchers using Retrieval-Augmented Generation (RAG) they develop various tools to understand queries, search from the scientific literature, filter retrieved information, provide accurate and comprehensive answers, and self-refine answers.
Outcome: OpenResearcher is built on Retrieval-Augmented Generation (RAG) to integrate Large Language Models (LLMs) with up-to-date, domain-specific knowledge.
Task-aware Contrastive Mixture of Experts for Quadruple Extraction in Conversations with Code-like Replies and Non-opinion Detection (2025.emnlp-main)

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Challenge: Applying Large Language Models (LLMs) for this specific task presents two primary challenges: the accurate extraction of multiple elements and the understanding of complex dialogue reply structure.
Approach: They propose a novel LLM-based multi-task approach to extract sentiment quadruples from conversations by integrating expert-level contrastive loss within task-oriented mixture of experts layer.
Outcome: The proposed method outperforms existing fine-tuning techniques in terms of accuracy and computational efficiency.
DiFiNet: Boundary-Aware Semantic Differentiation and Filtration Network for Nested Named Entity Recognition (2024.acl-long)

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Challenge: Existing approaches to Named Entity Recognition focus on identifying non-nested entities, but there is no explicit guidance for boundary detection.
Approach: They propose a Boundary-aware Semantic Differentiation and Filtration Network for nested NER that leverages a biaffine attention mechanism to generate a span representation matrix.
Outcome: Extensive experiments on three benchmark datasets demonstrate the proposed model yields a new state-of-the-art performance.
MAS-Bench: A Unified Benchmark for Shortcut-Augmented Hybrid Mobile GUI Agents (2026.acl-long)

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Challenge: Shortcuts such as APIs and deep-links have emerged as efficient complements to flexible GUI operations, but systematic evaluation of GUI–shortcut hybrid agents remains underexplored.
Approach: They propose a benchmark that evaluates GUI-shortcut hybrid agents with a specific focus on the mobile domain.
Outcome: MAS-Bench evaluates agent's ability to generate shortcuts by discovering and creating reusable, low-cost workflows.
Beyond Modality Collapse: Taming Guided Modality Entropy for Omni-modal Emotion Reasoning (2026.findings-acl)

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Challenge: EmoOmni is a data paradigm for omni-modal large language models that can be used for emotion reasoning.
Approach: They propose a data paradigm that interleaves guided tokens into reasoning traces to enforce structured evidence extraction.
Outcome: The proposed paradigm over-relys on a dominant modality while neglecting complementary cues.
Libra-VLA: Achieving Learning Equilibrium via Asynchronous Coarse-to-Fine Dual-System (2026.acl-long)

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Challenge: Vision-Language-Action models ground high-level semantic instructions into executable physical actions.
Approach: They propose a Coarse-to-Fine Dual-System VLA architecture that decouples learning complexity into a coarse-to fine hierarchy while leveraging structural modularity to implement an asynchronous execution strategy.
Outcome: The proposed architecture decouples learning complexity into a coarse-to-fine hierarchy while leveraging structural modularity to implement an asynchronous execution strategy.
GenWebNovel: A Genre-oriented Corpus of Entities in Chinese Web Novels (2025.coling-main)

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Challenge: Existing literature on nested entity recognition is insufficient partly due to insufficient annotated data.
Approach: They propose a method that utilizes a pre-trained language model as an In-context learning example retriever to boost the performance of large language models.
Outcome: The proposed method significantly enhances entity recognition, matching state-of-the-art (SOTA) models without additional training data.
Writing Like the Best: Exemplar-Based Expository Text Generation (2025.acl-long)

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Challenge: Existing methods for expository text generation rely on extensive domain corpora and are difficult to adapt topic-specific content.
Approach: They propose a task to generate an expository text on a new topic using an exemplar on . they propose Adaptive Imitation and a Recurrent Plan-then-Adapt framework that leverages large language models for effective adaptive imitation.
Outcome: The proposed framework surpasses existing baselines in producing factual, consistent, and relevant texts for this task.
Predicting the Unpredictable: Uncertainty-Aware Reasoning over Temporal Knowledge Graphs via Diffusion Process (2024.findings-acl)

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Challenge: Existing methods for Temporal Knowledge Graph reasoning capture indeterminacy in future events, but they are limited in capturing it.
Approach: They propose a Temporal Knowledge Graph reasoning process that denoises historical events and introduces Gaussian noise to corrupt target facts.
Outcome: Empirical results show that DiffuTKG outperforms state-of-the-art methods on four real-world datasets.
DialogueMMT: Dialogue Scenes Understanding Enhanced Multi-modal Multi-task Tuning for Emotion Recognition in Conversations (2025.coling-main)

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Challenge: Existing ERC methods fail to handle emotional cues from both visual sources and discourse structures due to the complexity of visual scenes and contextual dependencies in conversations.
Approach: They propose a framework for Emotion Recognition in conversations that utilizes multi-task instruction tuning to enhance the model's understanding of multi-modal dialogue scenes.
Outcome: The proposed framework outperforms existing state-of-the-art models on three benchmark ERC datasets and is based on a video-language connector and a chain-of thought strategy.
Analysing The Impact of Sequence Composition on Language Model Pre-Training (2024.acl-long)

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Challenge: Existing studies show that pretraining sequence composition strategy can lead to distracting information from previous documents.
Approach: They propose to use a sequence construction method to concatenate documents into fixed-length sequences to compute the likelihood of each token given its context.
Outcome: The proposed method can improve in-context learning, knowledge memorisation and context utilisation without sacrificing efficiency.
Synergetic Interaction Network with Cross-task Attention for Joint Relational Triple Extraction (2024.lrec-main)

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Challenge: Existing approaches to joint entity-relation extraction are limited in their ability to capture the interdependence between the two sub-tasks.
Approach: They propose a synergistic approach to capture interdependence between named entity recognition and relation extraction sub-tasks in a Synergetic Interaction Network.
Outcome: The proposed model achieves significantly better performance on three benchmark datasets.
Exploration-Exploitation Reshaping towards Efficient Reasoning for Large Language Models (2026.findings-acl)

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Challenge: Large Reasoning Models (LRMs) are constrained by the overthinking issue.
Approach: They propose a policy optimization framework that reshapes the exploration and exploitation through two core components: self-imitation and self-guidance exploration.
Outcome: The proposed model achieves superior reasoning efficiency without compromising overall accuracy.
TinyJudge: Unverifiable Constraint Alignment via Lightweight Specialist Ensembles (2026.acl-long)

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Challenge: Instruction Following (IF) is a core capability of LLMs, requiring strict adherence to diverse constraints.
Approach: They propose a framework that uses tiny language models to evaluate instruction following . they propose to use a set of specialized tiny language model to provide rewards for soft constraints.
Outcome: The proposed framework outperforms baseline models by 12% and speeds up training time by 3.

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