Papers by Benyou Wang

49 papers
Soundwave: Less is More for Speech-Text Alignment in LLMs (2025.acl-long)

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Challenge: Existing end-to-end speech large language models rely on large-scale annotated data for training, while data-efficient training has not been discussed in depth.
Approach: They propose a training strategy and a novel architecture to address representation space gap and sequence length inconsistency in speech and text.
Outcome: The proposed model outperforms other advanced speech LLMs in speech translation and AIR-Bench speech tasks with only a fraction of the training data.
LongLLaVA: Scaling Multi-modal LLMs to 1000 Images Efficiently via a Hybrid Architecture (2025.findings-emnlp)

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Challenge: Long-context Large Language Models (MLLMs) are critical for video understanding and image analysis.
Approach: They propose a hybrid architecture that integrates Mamba and Transformer blocks . they introduce data construction methods that capture both temporal and spatial dependencies .
Outcome: The proposed model achieves competitive results across various benchmarks while maintaining high throughput and low memory consumption.
From Word to World: Evaluate and Mitigate Culture Bias in LLMs via Word Association Test (2025.emnlp-main)

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Challenge: Multilingual and cross-cultural WAT reveal how culture modulates perceptual and interactive patterns.
Approach: They propose to embed cultural-specific semantic associations directly within large language models (LLMs) to address cultural preference.
Outcome: The proposed model significantly improves cross-cultural alignment, capturing diverse semantic associations.
S2S-Arena: Evaluating Paralinguistic Instruction Following in Speech-to-Speech Models (2026.acl-long)

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Challenge: Existing benchmarks rely heavily on text-based evaluation and largely ignore paralinguistic cues such as prosody, emotion, and speaker traits.
Approach: They propose a speech-native benchmark for evaluating instruction-following S2S models with explicit assessment of both semantic understanding and paralinguistic expression.
Outcome: The proposed system enables more natural, robust, and human-aligned speech agents.
DentalGPT: Incentivizing Multimodal Reasoning in Dentistry (2026.findings-acl)

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Challenge: Current multimodal large language models (MLLMs) show limited understanding of dental images.
Approach: They propose a dental-specialized multimodal large language model trained via staged multimodal alignment and reinforcement learning.
Outcome: The proposed model outperforms state-of-the-art models on disease classification and dental VQA tasks.
What Does Your Smile Mean? Jointly Detecting Multi-Modal Sarcasm and Sentiment Using Quantum Probability (2021.findings-emnlp)

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Challenge: Existing methods to model multi-modal sarcasm and sentiment are based on quantum probability . sarcasm and feelings embody intrinsic uncertainty of human cognition .
Approach: They propose a quantum probability-driven multi-task learning framework for sarcasm and sentiment recognition using quantum superpositions and quantum interference.
Outcome: The proposed model achieves state-of-the-art in multi-modal sarcasm and sentiment recognition.
Leveraging Unit Language Guidance to Advance Speech Modeling in Textless Speech-to-Speech Translation (2025.findings-acl)

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Challenge: Existing textless speech-to-speech translation models have two main challenges: 1) learning cross-modal features and 2) learning alignment of difference languages in long sequences.
Approach: They propose a unit language to overcome two main modeling challenges . they propose task prompt modeling to utilize the unit language in guiding the modeling process.
Outcome: The proposed language improves over a strong baseline and achieves comparable performance to models trained with text.
OVM, Outcome-supervised Value Models for Planning in Mathematical Reasoning (2024.findings-naacl)

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Challenge: Large language models (LLMs) struggle with maintaining accuracy throughout multiple reasoning steps, especially in mathematical reasoning where an error in earlier steps can propagate to subsequent ones and ultimately leading to an incorrect answer.
Approach: They propose an Outcome-supervised Value Model (OVM) that employs outcome supervision for training a value model, which prioritizes steps that lead to accurate conclusions.
Outcome: The proposed model performs better on two multi-step reasoning datasets, GSM8K and Game of 24.
Cut Your Losses! Learning to Prune Paths Early for Efficient Parallel Reasoning (2026.acl-long)

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Challenge: Parallel reasoning enhances Large Reasoning Models but incurs prohibitive costs due to futile paths caused by early errors.
Approach: They propose a systematic taxonomy of path pruning to categorize methods by signal source and learnability.
Outcome: The proposed model improves LRMs but incurs prohibitive costs due to futile paths caused by early errors.
DPTDR: Deep Prompt Tuning for Dense Passage Retrieval (2022.coling-1)

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Challenge: Recent studies show that prompt tuning is unfriendly for industrial deployment in dense retrieval tasks.
Approach: They propose to apply prompt tuning to dense retrieval tasks to reduce deployment cost . they propose to use retrieval-oriented intermediate pretraining and unified negative mining .
Outcome: The proposed method outperforms state-of-the-art models on MS-MARCO and Natural Questions.
DRBO: Mitigating Short Board Effect via Dynamic Reward Balancing in Multi-reward LLM Optimization (2025.findings-emnlp)

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Challenge: a new framework to optimize large language models (LLMs) for evaluation metrics is needed to balance weaker metrics.
Approach: They propose a Dynamic Reward Balancing Optimization framework to mitigate the "short-board effect" they apply it to single-task and multi-type task scenarios .
Outcome: The proposed framework improves performance and balances performance across multiple metrics.
Hypoformer: Hybrid Decomposition Transformer for Edge-friendly Neural Machine Translation (2022.emnlp-main)

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Challenge: Existing methods to compress Transformer are limited to sub-components, e.g., selfattention networks or embedding layer.
Approach: They propose a Hybrid Tensor-Train decomposition which retains full rank and meanwhile reduces operations and parameters.
Outcome: The proposed model outperforms light-weight SOTA methods on three translation tasks and achieves 7.1 points absolute improvement in BLEU and 1.27 X speedup on IWSLT’14 De-En task.
Towards Medical Complex Reasoning with LLMs through Medical Verifiable Problems (2025.findings-acl)

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Challenge: OpenAI o1 has been a significant milestone in large language model development . however, most research in reasoning has focused on mathematical tasks . medical domains require robust reasoning to provide reliable answers .
Approach: They propose a method to verify medical reasoning using a medical verifier . they also propose RL and reinforcement learning to enhance reasoning .
Outcome: The proposed method outperforms general and medical-specific baselines using only 40K verifiable problems.
Both Text and Images Leaked! A Systematic Analysis of Data Contamination in Multimodal LLM (2025.findings-emnlp)

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Challenge: Existing methods for unimodal large language models are inadequate for MLLMs due to multimodal data complexity and multi-phase training.
Approach: MM-DETECT analyzes data contamination using a framework that defines two contamination categories - unimodal and cross-modal .
Outcome: The proposed framework quantifies contamination severity across multiple-choice and caption-based Visual Question Answering tasks.
Unlocking LLMs’ Self-Improvement Capacity with Autonomous Learning for Domain Adaptation (2025.findings-acl)

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Challenge: Existing models that use self-supervised and instruction fine-tuning can be trained using unlabeled corpora.
Approach: They propose to use unlabeled target corpora to adapt large language models to new domains . they propose to employ self-supervised pre-training and instruction fine-tuning methods .
Outcome: The proposed model can adapt to new domains using only a large amount of unlabeled target corpora.
PrinciplismQA: A Philosophy-Grounded Approach to Assessing LLM-Human Clinical Medical Ethics Alignment (2026.findings-acl)

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Challenge: Existing benchmarks lack systematic approaches to integrate philosophical frameworks and expert validation for ethical reasoning assessment.
Approach: They propose a philosophy-grounded approach to assess medical ethics alignment . PrinciplismQA comprises 3,648 expert-validated questions spanning knowledge assessment and clinical reasoning .
Outcome: PrinciplismQA provides a philosophy-grounded approach to assessing medical ethics alignment.
VLFeedback: A Large-Scale AI Feedback Dataset for Large Vision-Language Models Alignment (2024.emnlp-main)

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Challenge: Large vision-language models (LVLMs) are evolving rapidly and require data with human supervision to achieve better alignment.
Approach: They introduce VLFeedback, the first large-scale vision-language feedback dataset . they train Silkie, an LVLM fine-tuned via direct preference optimization .
Outcome: The proposed model outperforms its base model in helpfulness, visual faithfulness, and safety metrics and exhibits enhanced resilience against red-teaming attacks.
Towards Injecting Medical Visual Knowledge into Multimodal LLMs at Scale (2024.emnlp-main)

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Challenge: Multimodal large language models (MLLMs) lack visual knowledge in medical applications due to data privacy concerns and high annotation costs.
Approach: They refined medical image-text pairs from PubMed and employed MLLMs (GPT-4V) to denoise and reformat the data.
Outcome: The proposed model significantly improves the MMMU Health & Medicine track and shows that it can be used in multimodal scenarios.
LLMs for Mathematical Modeling: Towards Bridging the Gap between Natural and Mathematical Languages (2025.findings-naacl)

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Challenge: Large Language Models (LLMs) have demonstrated strong performance across various natural language processing tasks, but their proficiency in mathematical reasoning remains a key challenge.
Approach: They propose a process-oriented framework to evaluate LLMs' ability to construct mathematical models, using solvers to compare outputs with ground truth.
Outcome: The proposed framework evaluates LLMs' ability to construct mathematical models, using solvers to compare outputs with ground truth.
One Cannot Stand for Everyone! Leveraging Multiple User Simulators to train Task-oriented Dialogue Systems (2023.acl-long)

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Challenge: Recent studies have found that Task-oriented Dialogue systems can be more suitable for human users.
Approach: They propose a framework to optimize ToD systems by leveraging Multiple User SimulaTors.
Outcome: The proposed framework improves performance on multiWOZ with human evaluations and automatic evaluations.
HuatuoGPT, Towards Taming Language Model to Be a Doctor (2023.findings-emnlp)

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Challenge: Experimental results show that the distilled language model outperforms its teacher model (ChatGPT) in most cases.
Approach: They propose a Large Language Model (LLM) that leverages both distilled data from **ChatGPT** and real-world data from**doctors** in the supervised fine-tuning stage.
Outcome: The proposed model outperforms the teacher model in most cases by using additional real-world data and RLMF to align the language model with the merits of both sources.
On the Difference of BERT-style and CLIP-style Text Encoders (2023.findings-acl)

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Challenge: Masked language modeling is one of the most popular pretraining recipes in natural language processing.
Approach: They analyze BERT-style and CLIP-style text encoders from three experiments . they show that CLIP style encoder is equipped with synesthesia for the cross-modal association .
Outcome: The proposed models outperform BERT-style models on vision-centric text understanding tasks, but have synesthesia for the cross-modal association, similar to the senses of humans.
RAG-Instruct: Boosting LLMs with Diverse Retrieval-Augmented Instructions (2025.emnlp-main)

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Challenge: Retrieval-Augmented Generation (RAG) has emerged as a key paradigm for enhancing large language models by incorporating external knowledge.
Approach: They propose a method for synthesizing diverse and high-quality RAG instruction data based on any source corpus.
Outcome: The proposed method outperforms existing methods in multiple tasks and achieves strong zero-shot performance.
Second Language (Arabic) Acquisition of LLMs via Progressive Vocabulary Expansion (2025.acl-long)

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Challenge: In the evolving landscape of large language models, the predominant focus has been on English and Chinese.
Approach: They propose to utilize Arabic-specific vocabulary in the tokenizer to accelerate decoding.
Outcome: The proposed model achieves decent performance comparable to the best Arabic LLMs across various Arabic benchmarks.
Benchmarking LLMs on Authentic Cases from Medical Journals (2026.findings-acl)

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Challenge: Existing medical benchmarks suffer from performance saturation due to medical exam questions.
Approach: They evaluate the performance of over 20 open-source and proprietary large language models and benchmark them against human medical experts.
Outcome: The new benchmark is based on authentic clinical cases sourced from medical journals and implements rigorous human review process to ensure the quality and reliability of the benchmark.
Probing Audio-Visual Reasoning in Multimodal Language Models through the Lens of Audio (2026.acl-long)

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Challenge: Recent multimodal large language models lack robust audio-visual integration ability and performance on DeafTest is highly correlated with AV-Odyssey accuracy.
Approach: They propose a benchmarking tool that integrates audio-visual reasoning with audio-video cues to infer solutions.
Outcome: The proposed model performs well on DeafTest, but lacks audio perception in simple audio tasks.
ClinAlign: Scaling Healthcare Alignment from Clinician Preference (2026.findings-acl)

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Challenge: Existing methods for aligning open-ended outputs with fine-grained clinician preferences are weakly grounded in professional guidelines.
Approach: They propose a framework to align large language models' outputs with fine-grained clinician preferences . they propose 119 broadly reusable, clinically grounded principles organized by clinical dimensions .
Outcome: The proposed framework outperforms existing models on HealthBench-Hard and Deepseek-R1 and o3.
Model Unlearning via Sparse Autoencoder Subspace Guided Projections (2025.emnlp-main)

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Challenge: Existing unlearning strategies lack interpretability or fail to provide robust defense against adversarial prompts.
Approach: They propose a framework that leverages SAE features to drive targeted updates in the model’s parameter space.
Outcome: The proposed framework reduces harmful knowledge accuracy by 3.22% compared to baselines and improves adversarial robustness under jailbreak prompts.
Humans or LLMs as the Judge? A Study on Judgement Bias (2024.emnlp-main)

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Challenge: Proprietary models such as GPT-4, Claude, Gemini-Pro and others are being democratized to improve evaluations of LLMs.
Approach: They propose a framework that is free from referencing groundtruth annotations for investigating **Misinformation Oversight Bias**, **Gender Bia**,**Authority Bia* and **Beauty Bia's** on LLM and human judges.
Outcome: The proposed framework investigates **Misinformation Oversight Bias**, **Gender Bia**,**Authority Bia* and **Beauty Bia' on LLM and human judges.
Huatuo-26M, a Large-scale Chinese Medical QA Dataset (2025.findings-naacl)

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Challenge: Large Language Models are a powerful tool for medical research, but the data is a bottleneck.
Approach: They propose to use the largest ever medical Question Answering dataset with 26 Million QA pairs as a fine-tuning data for training large language models.
Outcome: The proposed dataset demonstrates that it can be used to train large language models and improves zero-shot performance on other datasets.
Human or LLM as Standardized Patients? A Comparative Study in Medical Education (2026.acl-long)

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Challenge: Standardized patients (VSPs) are indispensable for clinical skills training but remain expensive and difficult to scale.
Approach: They propose a multi-agent VSP framework that separates case-grounded information disclosure from response generation to support stable, inquiry-conditioned patient behavior.
Outcome: The proposed framework more closely matches human SP behavior than existing VSPs, particularly in case consistency and controlled disclosure.
PlatoLM: Teaching LLMs in Multi-Round Dialogue via a User Simulator (2024.acl-long)

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Challenge: Recent efforts to democratize ChatGPT have focused on leveraging real user and ChatGPP dialogues, but the most direct human needs are often ignored.
Approach: They propose a method to simulate human behavior better by using real human-like questions extracted from real human conversations as a learning goal and a user simulator called ‘Socratic’.
Outcome: The proposed model achieves SoTA performance among LLaMA-based 7B models in MT-Bench.
UCL-Bench: A Chinese User-Centric Legal Benchmark for Large Language Models (2025.findings-naacl)

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Challenge: Existing legal benchmarks focusing on knowledge and logic evaluate LLMs on various tasks in legal domain, but few have explored the practical application of LLM by actual users.
Approach: They propose a Chinese user-centric legal benchmark that aims to assess the practical application of LLMs by real users.
Outcome: The proposed model outperforms existing models on various tasks in legal domain but does not outperfect ChatGPT.
MLLM-Bench: Evaluating Multimodal LLMs with Per-sample Criteria (2025.naacl-long)

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Challenge: Existing evaluation methodologies for multimodal large language models are limited in evaluating objective queries without considering real-world user experiences.
Approach: They propose to evaluate multimodal large language models with per-sample criteria using potent MLLM as the judge.
Outcome: The proposed evaluation paradigm shows that it can be used to evaluate multimodal large language models with per-sample criteria.
CNM: An Interpretable Complex-valued Network for Matching (N19-1)

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Challenge: Existing work on quantum physics models language understanding using quantum probability .
Approach: They propose a quantum-theoretic framework that unifies different linguistic units in a single complex-valued vector space and a complex-valuable network for semantic matching.
Outcome: The proposed framework achieves comparable performances to strong CNN and RNN baselines on two benchmarking question answering (QA) datasets.
A Multi-task Learning Framework for Opinion Triplet Extraction (2020.findings-emnlp)

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Challenge: Existing approaches to Aspect-based sentiment analysis (ABSA) use aspect terms and their corresponding sentiment polarities as a reference, but they lack opinion terms as .
Approach: They propose a multi-task learning framework to extract aspect terms and opinion terms and parse their sentiment dependencies with a biaffine scorer.
Outcome: The proposed framework outperforms baseline and state-of-the-art approaches on four SemEval benchmarks.
Lifting the Curse of Capacity Gap in Distilling Language Models (2023.acl-long)

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Challenge: Existing studies have shown that pretrained language models require a tremendous amount of inference compute to perform.
Approach: They propose to compress pretrained language models to small ones with a teacher-student paradigm to fill the capacity gap.
Outcome: The proposed model achieves state-of-the-art performance at small FLOPs compared with competitive baselines.
Less is More: A Simple yet Effective Token Reduction Method for Efficient Multi-modal LLMs (2025.coling-main)

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Challenge: Recent advances in Multimodal Large Language Models have led to a significant surge in the resource consumption of these models.
Approach: They propose a method to reduce image tokens using visual query data by using CLIP metrics to reduce computational overhead and maintain consistent performance.
Outcome: The proposed method has been extensively tested across 12 datasets and shows a significant reduction in computational overhead while maintaining a consistent level of performance.
UCFE: A User-Centric Financial Expertise Benchmark for Large Language Models (2025.findings-naacl)

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Challenge: Recent advances in large language models (LLMs) have expanded their potential applications in finance.
Approach: They propose a framework to evaluate the ability of large language models to handle financial tasks using human expert evaluations and task-specific interactions.
Outcome: The proposed framework evaluates the ability of large language models to handle complex financial tasks and combines human expert evaluations with dynamic, task-specific interactions to simulate the complexities of evolving financial scenarios.
Can Multimodal LLMs See Materials Clearly? A Multimodal Benchmark on Materials Characterization (2025.findings-emnlp)

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Challenge: characterization imaging data is fundamental to acquiring materials information.
Approach: a team of researchers develop a benchmark for materials characterization imaging data . the goal is to bridge this gap by addressing 1,500 questions that require expert-level expertise.
Outcome: a new benchmark for materials characterization imaging data is presented . the benchmark reveals that MLLMs perform poorly when addressing higher-level questions .
CMB: A Comprehensive Medical Benchmark in Chinese (2024.naacl-long)

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Challenge: Large Language Models (LLMs) provide a great breakthrough in medicine, says a new study . existing studies on LLMs leverage subjective evaluation, but evaluation in medicine is professional .
Approach: They propose a localized medical benchmark in Chinese rooted in native Chinese . they propose to use traditional Chinese medicine to evaluate large-scale LLMs .
Outcome: a new benchmark is developed to evaluate large-scale LLMs in china . the proposed model is rooted in the native Chinese linguistic and cultural framework .
Towards Fine-grained Audio Captioning with Multimodal Contextual Fusion (2026.acl-long)

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Challenge: Existing methods for audio captioning lack fine-grained detail and contextual accuracy due to limited unimodal or superficial information.
Approach: They propose a two-stage automated pipeline that uses pretrained models to extract contextual cues from video . a large language model synthesizes these inputs to generate detailed and context-aware captions .
Outcome: The proposed method is scalable and generates detailed and context-aware captions on large-scale audio datasets.
Can Language Models Make Fun? A Case Study in Chinese Comical Crosstalk (2023.acl-long)

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Challenge: Pre-trained language models have been widely used in NLP, but their social or cultural impact is under-explored.
Approach: They build a dataset consisting of numerous **C**hinese **C*omical **C***rosstalk scripts, which is for a popular Chinese performing art called ‘Xiangsheng’ or ‘’ since 1800s.
Outcome: The proposed approach can generate humor as humans do, but it is still in its infancy.
Smurfs: Multi-Agent System using Context-Efficient DFSDT for Tool Planning (2025.naacl-long)

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Challenge: Teaching large language models to use tools for solving complex problems can grant them human-like reasoning abilities.
Approach: They propose a multi-agent system that enhances the Deep First Search Decision Tree (DFSDT) to address issues like error propagation and limited exploration in ReAct .
Outcome: The proposed system reduces token usage by 60.9% compared to existing methods and performs on par with GPT-4-DFSDT.
AceGPT, Localizing Large Language Models in Arabic (2024.naacl-long)

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Challenge: Significant concerns emerge when addressing cultural sensitivity and local values.
Approach: They propose a localized Large Language Model (LLM) specifically for Arabic, a language imbued with unique cultural characteristics inadequately addressed by current mainstream models.
Outcome: The proposed model sets the state-of-the-art standard for open Arabic LLMs across various benchmarks.
Is Your LLM Outdated? A Deep Look at Temporal Generalization (2025.naacl-long)

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Challenge: Existing methods to evaluate large language models are limited due to their inherent dynamic nature and the inherent dynamicity of language and information.
Approach: They introduce a new evaluation framework that employs fresh text and event prediction for assessing LLMs’ temporal adaptability.
Outcome: The proposed framework shows significant temporal biases and a decline in performance over time.
Exploring the Potential of Dense Information in Multimodal Alignment (2024.findings-acl)

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Challenge: Existing methods to enhance captions have limitations such as insufficient detail and excessive hallucinations, resulting in compromised alignment and masking the true potential of dense information.
Approach: They propose a pipeline that generates highly detailed captions for images that facilitates in-depth analysis of the potential for dense information in multimodal alignment.
Outcome: The proposed pipeline significantly improves multimodal alignment and compositional reasoning abilities, surpassing hard negative samples.
CoD, Towards an Interpretable Medical Agent using Chain of Diagnosis (2025.findings-acl)

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Challenge: Existing large language models (LLMs) are proving to be effective in medical automatic diagnosis, but their interpretability remains unaddressed.
Approach: They propose to use a "Chain-of-Diagnosis" approach to enhance the interpretability of medical automatic diagnosis by outputting the disease confidence distribution.
Outcome: The proposed model outperforms other LLMs on automatic diagnostic tasks across three real-world benchmarks and provides interpretability while ensuring controllability in diagnostic rigor.
Exploring Compositional Generalization of Multimodal LLMs for Medical Imaging (2025.acl-long)

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Challenge: Current research suggests that multitask training outperforms single-task as different tasks can benefit each other, but they often overlook the internal relationships within these tasks.
Approach: They employ compositional generalization (CG) to examine the generalization of multimodal large language models in medical imaging.
Outcome: The proposed model can understand unseen medical images and is able to perform CG across classification and detection tasks.

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