Papers by Yuxin Li

35 papers
PaddleSpeech: An Easy-to-Use All-in-One Speech Toolkit (2022.naacl-demo)

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Challenge: PaddleSpeech is an open-source speech toolkit that supports speech-to-text and text-to speech tasks.
Approach: They describe the design philosophy and core architecture of PaddleSpeech to support several essential speech-to-text and text-to speech tasks.
Outcome: The proposed framework achieves competitive or state-of-the-art performance on various speech datasets and implements the most popular methods.
Explainable Chain-of-Thought Reasoning: An Empirical Analysis on State-Aware Reasoning Dynamics (2025.findings-emnlp)

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Challenge: Recent advances in chain-of-thought prompting have demonstrated the ability of large language models to perform multi-step reasoning.
Approach: They propose a framework to analyze latent dynamics of CoT trajectories for interpretability . they segment generated CoT into discrete reasoning steps and abstract each step into a spectral embedding based on token-level Gram matrices .
Outcome: The proposed framework segments generated CoT steps into discrete reasoning steps, abstracts each step into a spectral embedding based on token-level Gram matrices, and clusters these embeddements into semantically meaningful latent states.
Mitigating Visual Knowledge Forgetting in MLLM Instruction-tuning via Modality-decoupled Gradient Descent (2025.findings-emnlp)

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Challenge: Existing fine-tuning and continual learning methods compress visual representations and emphasize task alignment over visual retention.
Approach: They propose a modality-decoupled gradient descent (MDGD) that regulates gradient updates to preserve effective rank of visual features and explicitly disentangles visual learning from task-specific alignment.
Outcome: The proposed model reduces visual forgetting and improves visual retention . it disentangles visual learning from task-specific alignment and preserves effective rank .
A Multimodal In-Context Tuning Approach for E-Commerce Product Description Generation (2024.lrec-main)

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Challenge: Existing methods for generating product descriptions from images are inaccurate and generic . e-commerce product descriptions are important for content marketing and increasing engagement .
Approach: They propose a new setting for generating product descriptions from images, augmented by marketing keywords.
Outcome: The proposed approach improves the accuracy and diversity of product descriptions by up to 3.3% on Rouge-L and 9.4% on D-5.
Layer-wise Fusion with Modality Independence Modeling for Multi-modal Emotion Recognition (2023.acl-long)

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Challenge: Existing studies focus on developing models that exploit the unification of multiple modalities.
Approach: They propose to maintain modality independence by using a multi-modal transformer model that fuses all modalities.
Outcome: The proposed model outperforms state-of-the-art models in multi-modal emotion recognition.
A Multi-Modal Knowledge Graph for Classical Chinese Poetry (2022.findings-emnlp)

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Challenge: Existing studies in classical Chinese poetry area focus on generation and analysis of poetry.
Approach: They propose to integrate the visual information of words in classical Chinese poetry into a multi-modal knowledge graph.
Outcome: The proposed model bridges the semantic gap between two modalities and achieves state-of-the-art performance on the poetry-image retrieval task.
Incorporating Probing Signals into Multimodal Machine Translation via Visual Question-Answering Pairs (2023.findings-emnlp)

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Challenge: Existing studies show that multimodal machine translation systems exhibit decreased sensitivity to visual information when text inputs are complete.
Approach: They propose to generate parallel VQA style pairs from source text to foster more robust cross-modal interaction.
Outcome: The proposed approach generates parallel VQA style pairs from the source text, fostering more robust cross-modal interaction.
SURE: Safety Understanding and Reasoning Enhancement for Multimodal Large Language Models (2025.emnlp-main)

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Challenge: Existing multimodal large language models incorporate visual and textual information, but introduces new and complex safety risks.
Approach: They propose a safety reasoning framework that integrates visual modalities into multimodal models to help them resist jailbreak attacks.
Outcome: The proposed framework improves model safety while avoiding over-defense . it is based on a large-scale safety reasoning dataset .
A Study of Implicit Ranking Unfairness in Large Language Models (2024.findings-emnlp)

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Challenge: Large language models (LLMs) have demonstrated superior ability to serve as ranking models, but they will exhibit discriminatory ranking behaviors based on users’ sensitive attributes (gender).
Approach: They propose an evaluation method to investigate the severity of implicit ranking unfairness and a pair-wise regression method to conduct fair-aware data augmentation for LLM fine-tuning.
Outcome: The proposed method outperforms existing methods in ranking fairness, achieving this with only a small reduction in accuracy.
Tailoring Instructions to Student’s Learning Levels Boosts Knowledge Distillation (2023.acl-long)

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Challenge: Recent success of natural language processing (NLP) is driven by the adoption of large-scale pretrained language models.
Approach: They propose a method to determine the impact of distillation influence on student generalization ability by prioritizing samples likely to enhance the student's generalization abilities.
Outcome: The proposed method outperforms 10 common knowledge distillation baselines on 6 text classification tasks in the GLUE benchmark.
KnowCoder-X: Boosting Multilingual Information Extraction via Code (2025.findings-acl)

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Challenge: Empirical evidence indicates that Large Language Models exhibit spontaneous cross-lingual alignment in Information Extraction (IE) however, a significant imbalance across languages persists, highlighting an underlying deficiency.
Approach: They propose a code LLM with advanced cross-lingual and multilingual capabilities for universal IE that standardizes the representation of multilingual schemas using Python classes and conducts IE alignment instruction tuning on translated instance prediction task.
Outcome: The proposed model surpasses ChatGPT and SoTA by 30.17% without training in 29 unseen languages and significantly improves cross-lingual IE transferability.
Let’s Reason Formally: Natural-Formal Hybrid Reasoning Enhances LLM’s Math Capability (2025.emnlp-main)

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Challenge: Recent work has focused on improving the mathematical reasoning capabilities of Large Language Models (LLMs).
Approach: They propose an end-to-end framework to integrate FL into NL math reasoning . they propose a problem alignment method that reformulates QA and existence problems .
Outcome: The proposed framework achieves 89.80% and 84.34% accuracy rates on the MATH-500 and the AMC benchmarks.
Memory-enhanced Large Language Model for Cross-lingual Dependency Parsing via Deep Hierarchical Syntax Understanding (2025.findings-emnlp)

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Challenge: Experimental results show that our approach can significantly improve the parsing accuracy of all baseline models, leading to new state-of-the-art results.
Approach: They propose a deep hierarchical syntax understanding approach to improve the cross-lingual semantic memory capability of large language models by implicitly aligning linguistic knowledge between source and target languages.
Outcome: The proposed approach improves the cross-lingual semantic memory capability of large language models by combining implicit multi-task fine-tuning and explicit label bank guiding.
NeuSym-RAG: Hybrid Neural Symbolic Retrieval with Multiview Structuring for PDF Question Answering (2025.acl-long)

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Challenge: Existing approaches to retrieval augmented generation neglect PDF structure and layout . individual PDFs often exceed prompt limits and user queries may span multiple documents.
Approach: They propose a hybrid neural symbolic retrieval framework which combines both paradigms in an interactive process.
Outcome: The proposed framework organizes semi-structured PDF content into relational database and vectorstore . it defeats both RAG and structured baselines on three PDF-based QA datasets .
Crowd Comparative Reasoning: Unlocking Comprehensive Evaluations for LLM-as-a-Judge (2025.acl-long)

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Challenge: Existing methods rely on majority voting or criteria expansion to capture detailed and detailed details, often leading to incomplete outcomes.
Approach: They propose a method which introduces additional crowd responses to compare with the candidate responses, thereby exposing deeper and more comprehensive details within the candidate answers.
Outcome: Experiments show that the proposed method improves evaluation reliability and achieves an average gain of 6.7% across five benchmarks.
RiTeK: A Dataset for Large Language Models Complex Reasoning over Textual Knowledge Graphs in Medicine (2026.findings-acl)

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Challenge: Existing methods for retrieving medical textual knowledge Graphs struggle to perform well, a study finds . existing methods struggle to provide accurate answers to complex questions, he says .
Approach: They synthesize user queries integrating diverse topological structures, relational information, and complex textual descriptions.
Outcome: a new dataset for medical textual knowledge graphs shows that existing methods struggle to perform well . main bottlenecks lie in the scarcity of existing medical TKGs and the limited expressiveness of their topological structures .
Learning to Edit: Aligning LLMs with Knowledge Editing (2024.acl-long)

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Challenge: Existing knowledge editing techniques rely on memorizing updated knowledge, impeding LLMs from effectively combining the new knowledge with their inherent knowledge when answering questions.
Approach: They propose a Learning to Edit framework that equips LLMs with the ability to apply updated knowledge to input questions through a two-phase process .
Outcome: The proposed framework outperforms existing methods in knowledge editing tasks and compares it with four benchmarks and two LLM architectures.
From Laboratory to Real-World Applications: Benchmarking Agentic Code Reasoning at the Repository Level (2026.acl-long)

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Challenge: Existing benchmarks for repository-level reasoning are inconsistent . repoReason is a white-box diagnostic benchmark centered on abductive assertion verification .
Approach: They propose a white-box diagnostic benchmark centered on abductive assertion verification.
Outcome: The proposed framework eliminates memorization while maintaining authentic logical depth . it also regenerates ground-truth states and quantifyes reasoning via three orthogonal metrics .
Towards Event Extraction with Massive Types: LLM-based Collaborative Annotation and Partitioning Extraction (2025.emnlp-main)

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Challenge: Event Extraction (EE) is a long-standing target, but lacks an efficient and effective annotation framework to construct the corresponding datasets.
Approach: They propose an LLM-based collaborative annotation framework that refines annotations of triggers from distant supervision and carries out argument annotation.
Outcome: The proposed framework outperforms state-of-the-art methods on the largest EE dataset to date . it achieves the F1 scores of 90% and 85.3% on the human-annotated test set .
VehicleWorld: A Highly Integrated Multi-Device Environment for Intelligent Vehicle Interaction (2025.findings-emnlp)

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Challenge: Traditional Function Calling (FC) approaches operate statelessly, requiring multiple exploratory calls to build environmental awareness before execution, leading to inefficiency and limited error recovery.
Approach: They propose a state-based function call approach that maintains explicit system state awareness and implements direct state transitions to achieve target conditions.
Outcome: The proposed approach outperforms traditional function calling approaches, achieving superior execution accuracy and reduced latency.
Training Long-Context LLMs Efficiently via Chunk-wise Optimization (2025.findings-acl)

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Challenge: Recent advances in long-context large language models have demonstrated superior retrieval quality compared to retrievalaugmented generation (RAG) approaches.
Approach: They propose a memory-efficient training paradigm that partitions lengthy inputs into manageable chunks.
Outcome: The proposed model expands maximum sequence length from 1K to 16K tokens on a single RTX 3090 GPU, while SpaCO achieves accelerated training speed.
GRACE: Gradient-guided Controllable Retrieval for Augmenting Attribute-based Text Generation (2023.findings-acl)

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Challenge: Existing methods for controlling the generation of pre-trained language models infuse domain bias into the generation process, making it difficult to generate out-of-domain texts.
Approach: They propose a retrieval-augmented generation framework that uses retrieval to generate fluent sentences with high attribute relevance.
Outcome: The proposed method can generate fluent sentences with high attribute relevance while keeping domain bias out of the model.
R3-RAG: Learning Step-by-Step Reasoning and Retrieval for LLMs via Reinforcement Learning (2025.findings-emnlp)

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Challenge: RAG systems that integrate external knowledge with Large Language Models often become bottlenecks due to their limited parameters compared to LLMs and their inability to perform step-by-step reasoning.
Approach: They propose a model that integrates external knowledge with Large Language Models to enhance factual correctness and mitigate hallucination.
Outcome: The proposed model outperforms baselines and can transfer well to different retrievers.
FollowBench: A Multi-level Fine-grained Constraints Following Benchmark for Large Language Models (2024.acl-long)

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Challenge: Existing benchmarks focus on evaluating pure response quality, rather than assessing whether the response follows constraints stated in the instruction.
Approach: They propose a Multi-level Fine-grained Constraints Following Benchmark for Large Language Models that adds a single constraint to the initial instruction at each increased level.
Outcome: The proposed model can follow instructions with more constraints, and is deemed to have better instruction-following ability.
Mathematical Proof as a Litmus Test: Revealing Failure Modes of Advanced Large Reasoning Models (2026.acl-long)

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Challenge: Large reasoning models have demonstrated remarkable mathematical problem-solving abilities, but their true reasoning shortcomings are often hidden.
Approach: They propose to leverage the rigor and methodological complexity of mathematical proofs as a diagnostic tool to expose hidden failures.
Outcome: The proposed model evaluation exploits the rigor and complexity of proof problems to uncover 10 fine-grained errors.
A Multi-Modal Context Reasoning Approach for Conditional Inference on Joint Textual and Visual Clues (2023.acl-long)

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Challenge: Existing methods for conditional inference on joint textual and visual clues lack multimodal context reasoning capability.
Approach: They propose a multi-modal context reasoning approach that embeds textual semantics and objective image information into the pretrained language model to perform context reasoning.
Outcome: The proposed approach improves on two data sets and shows 4.8% gain on the PMR.
AutoVecCoder: Teaching LLMs to Generate Explicitly Vectorized Code (2026.findings-acl)

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Challenge: Current development practices face a dichotomy between automation and performance.
Approach: They propose a framework to empower LLMs with the capability of automated explicit vectorization.
Outcome: The proposed framework achieves state-of-the-art performance on the SSE and AVX subsets of SimdBench.
ABC-Bench: Benchmarking Agentic Backend Coding in Real-World Development (2026.findings-acl)

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Challenge: Large Language Models (LLMs) have redefined the role of AI in software engineering . current benchmarks focus on localized code generation, but neglect dynamic, full-process requirements of real-world engineering.
Approach: They propose a benchmark to evaluate agentic backend coding within a realistic, executable workflow.
Outcome: The ABC-Bench benchmark evaluates agentic backend coding within a realistic, executable workflow.
GROVE: A Retrieval-augmented Complex Story Generation Framework with A Forest of Evidence (2023.findings-emnlp)

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Challenge: Existing methods for generating stories with complex plots rely on detailed prompts, which inadvertently limit the creative potential of the generated stories.
Approach: They propose a retrieval-auGmented stoRy generation framework with a fOrest of eVidEnce to enhance stories’ complexity.
Outcome: The proposed framework enables generating more diverse plotlines from human-written stories.
Representation Alignment and Adversarial Networks for Cross-lingual Dependency Parsing (2024.findings-emnlp)

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Challenge: Pre-trained language models have improved dependency parsing accuracy in resource-rich languages . however, the accuracy drops sharply when the model is transferred to low-resource language .
Approach: They propose a representation alignment and adversarial model to filter out useful knowledge from rich-resource language and ignore useless ones.
Outcome: The proposed model outperforms baseline models on the benchmark datasets by 1.37 LAS and 1.34 UAS.
Safety Alignment via Constrained Knowledge Unlearning (2025.acl-long)

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Challenge: Existing defense mechanisms have not fully deleted harmful knowledge in large language models (LLMs) Existing methods to address safety alignment have not completely deleted harmful information in LLMs.
Approach: They propose a safety alignment strategy that uses scoring neurons to identify useful knowledge in LLMs and pruning the gradients of neurons in U to preserve beneficial information.
Outcome: The proposed method significantly improves model safety while maintaining utility compared to existing methods.
MLWQ: Efficient Small Language Model Deployment via Multi-Level Weight Quantization (2025.emnlp-main)

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Challenge: Existing methods for efficient deployment of small language models face inefficient bit-width allocation and insufficient fine-grained quantization adjustments.
Approach: They propose a weight quantization technique that facilitates efficient deployment of SLMs . they propose to combine inter-layer loss and intra-layer salience to achieve better allocation .
Outcome: Experimental results show that multi-level weight quantization achieves competitive performance compared to state-of-the-art methods.
MT-Eval: A Multi-Turn Capabilities Evaluation Benchmark for Large Language Models (2024.emnlp-main)

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Challenge: Existing evaluation frameworks focus on single-turn evaluations, overlooking the models’ capabilities in multi-turn interactions.
Approach: They propose a benchmark to evaluate the multi-turn conversational abilities of large language models (LLMs) by analyzing human-LLM conversations and constructing multi-turned queries for each category using GPT-4.
Outcome: The proposed model outperforms open-source models in multi-turn tasks while retaining and recalling historical information.
A Neural Divide-and-Conquer Reasoning Framework for Image Retrieval from Linguistically Complex Text (2023.acl-long)

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Challenge: Pretrained Vision-Language Models (VLMs) have achieved remarkable performance in image retrieval from text, but their performance drops drastically when confronted with linguistically complex texts.
Approach: They propose an end-to-end Neural Divide-and-Conquer Reasoning framework for linguistically complex texts that they struggle to comprehend.
Outcome: The proposed framework significantly improves performance in complex image-text reasoning problem.

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