← Search

Chengyu Wang

62 accepted papers

2026

Beyond Drift: Stabilizing Subjective LLM Evaluation with Information-Theoretic Rubrics

ICML 2026poster

Despite the growing use of large language models (LLMs) in subjective tasks such as role-playing, humor, emotional intelligence, and dialogue quality, their evaluation faces a pressing reproducibility crisis: even the same evaluator may contradict itself when re-judging the exact same sample. We att…

Cited by 0SourceScholar
2026

Leveraging Image as Compressed Visual Prompt and Hierarchical Visual Knowledge for Effective Image Utilization in MLLMs

AAAI 2026technical

Multimodal Large Language Models (MLLMs) integrate text and images for complex reasoning tasks, but efficiently utilizing image remains a challenge due to redundancy and noise. Traditional methods take the entire image features as visual prompt into the MLLMs, leading to excessive visual tokens tha

Cited by 0SourcePDFScholar
2026

Student-Centered Distillation Narrows the Agentic Gap Between Small and Large LLMs

ICML 2026poster

Large Language Model agents achieve strong performance on multi‑step reasoning and tool‑use tasks, but their impressive capabilities typically rely on extremely large backbones. Existing distillation approaches train smaller students to imitate full teacher trajectories, yet reasoning and knowledge …

Cited by 0SourceScholar
2026

Where Does Vision Meet Language? Understanding and Refining Visual Fusion in MLLMs via Contrastive Attention

CVPR 2026

Multimodal Large Language Models (MLLMs) have achieved remarkable progress in vision-language understanding, yet how they internally integrate visual and textual information remains poorly understood. To bridge this gap, we perform a systematic layer-wise masking analysis across multiple architectur

Cited by 0SourceScholar
2026

Zero-to-Hero: Empowering Video Appearance Transfer with Zero-Shot Initialization and Holistic Restoration

AAAI 2026technical

Appearance editing according to user needs is a pivotal task in video editing. Existing text-guided methods often lead to ambiguities regarding user intentions and restrict fine-grained control over editing specific aspects of objects. To overcome these limitations, this paper introduces a novel app

Cited by 0SourcePDFScholar
2025

AdaptEdit: An Adaptive Correspondence Guidance Framework for Reference-Based Video Editing

IJCAI 2025

Video editing is a pivotal process for customizing video content according to user needs. However, existing text-guided methods often lead to ambiguities regarding user intentions and restrict fine-grained control for editing specific aspects in videos. To overcome these limitations, this paper intr

Cited by 0SourcePDFScholar
2025

Attribution Analysis Meets Model Editing: Advancing Knowledge Correction in Vision Language Models with VisEdit

AAAI 2025technical

Model editing aims to correct outdated or erroneous knowledge in large models without costly retraining. Recent research discovered that the mid-layer representation of the subject's final token in a prompt has a strong influence on factual predictions, and developed Large Language Model (LLM) editi…

2025

BELLE: A Bi-Level Multi-Agent Reasoning Framework for Multi-Hop Question Answering

ACL 2025long

Multi-hop question answering (QA) involves finding multiple relevant passages and performing step-by-step reasoning to answer complex questions. Previous works on multi-hop QA employ specific methods from different modeling perspectives based on large language models (LLMs), regardless of the questi…

Cited by 0SourcePDFScholar
2025

Building a Family of Data Augmentation Models for Low-cost LLM Fine-tuning on the Cloud

COLING 2025industry

Specializing LLMs in various domain-specific tasks has emerged as a critical step towards achieving high performance. However, the construction and annotation of datasets in specific domains are always very costly. Apart from using superior and expensive closed-source LLM APIs to construct datasets,…

2025

DocLayLLM: An Efficient Multi-modal Extension of Large Language Models for Text-rich Document Understanding

CVPR 2025poster

Text-rich document understanding (TDU) requires comprehensive analysis of documents containing substantial textual content and complex layouts. While Multimodal Large Language Models (MLLMs) have achieved fast progress in this domain, existing approaches either demand significant computational resou…

2025

Encapsulated Composition of Text-to-Image and Text-to-Video Models for High-Quality Video Synthesis

CVPR 2025poster

In recent years, large text-to-video (T2V) synthesis models have garnered considerable attention for their abilities to generate videos from textual descriptions. However, achieving both high imaging quality and effective motion representation remains a significant challenge for these T2V models. Ex…

2025

Enhancing Reasoning Abilities of Small LLMs with Cognitive Alignment

EMNLP 2025

The reasoning capabilities of large language reasoning models (LRMs), such as OpenAI’s o1 and DeepSeek-R1, have seen substantial advancements through deep thinking. However, these enhancements come with significant resource demands, underscoring the need for training effective small reasoning models

Cited by 0SourcePDFScholar
2025

Evaluating Semantic Variation in Text-to-Image Synthesis: A Causal Perspective

ICLR 2025poster

Accurate interpretation and visualization of human instructions are crucial for text-to-image (T2I) synthesis. However, current models struggle to capture semantic variations from word order changes, and existing evaluations, relying on indirect metrics like text-image similarity, fail to reliably…

2025

FastBlend: Enhancing Video Stylization Consistency via Model-Free Patch Blending

IJCAI 2025

With the emergence of diffusion models and the rapid development of image processing, generating artistic images in style transfer tasks has become effortless. However, these impressive image processing approaches face consistency issues in video processing due to the independent processing of each

2025

Lifelong Knowledge Editing for Vision Language Models with Low-Rank Mixture-of-Experts

CVPR 2025poster

Model editing aims to correct inaccurate knowledge, update outdated information, and incorporate new data into Large Language Models (LLMs) without the need for retraining. This task poses challenges in lifelong scenarios where edits must be continuously applied for real-world applications. While so…

Cited by 0SourcePDFScholar
2025

UniEdit: A Unified Knowledge Editing Benchmark for Large Language Models

NeurIPS 2025poster

Model editing aims to efficiently revise incorrect or outdated knowledge within LLMs without incurring the high cost of full retraining and risking catastrophic forgetting. Currently, most LLM editing datasets are confined to narrow knowledge domains and cover a limited range of editing evaluation.…

Cited by 0SourceScholar
2024

A Dual-Way Enhanced Framework from Text Matching Point of View for Multimodal Entity Linking

AAAI 2024technical

Multimodal Entity Linking (MEL) aims at linking ambiguous mentions with multimodal information to entity in Knowledge Graph (KG) such as Wikipedia, which plays a key role in many applications. However, existing methods suffer from shortcomings, including modality impurity such as noise in raw image…

2024

DAFNet: Dynamic Auxiliary Fusion for Sequential Model Editing in Large Language Models

ACL 2024findings

Recently, while large language models (LLMs) have demonstrated impressive results, they still suffer from hallucination, i.e., the generation of false information. Model editing is the task of fixing factual mistakes in LLMs; yet, most previous works treat it as a one-time task, paying little attent…

2024

DiffChat: Learning to Chat with Text-to-Image Synthesis Models for Interactive Image Creation

ACL 2024findings

We present DiffChat, a novel method to align Large Language Models (LLMs) to “chat” with prompt-as-input Text-to-Image Synthesis (TIS)models (e.g., Stable Diffusion) for interactive image creation. Given a raw prompt/image and a user-specified instruction, DiffChat can effectively make appropriate m…

2024

Diffutoon: High-Resolution Editable Toon Shading via Diffusion Models

IJCAI 2024poster

Toon shading is a type of non-photorealistic rendering task in animation. Its primary purpose is to render objects with a flat and stylized appearance. As diffusion models have ascended to the forefront of image synthesis, this paper delves into an innovative form of toon shading based on diffusion…

2024

Distilling Instruction-following Abilities of Large Language Models with Task-aware Curriculum Planning

EMNLP 2024finding

Instruction tuning aims to align large language models (LLMs) with open-domain instructions and human-preferred responses. While several studies have explored autonomous approaches to distilling and annotating instructions from powerful proprietary LLMs, such as ChatGPT, they often neglect the impac…

2024

KEHRL: Learning Knowledge-Enhanced Language Representations with Hierarchical Reinforcement Learning

COLING 2024main

Knowledge-enhanced pre-trained language models (KEPLMs) leverage relation triples from knowledge graphs (KGs) and integrate these external data sources into language models via self-supervised learning. Previous works treat knowledge enhancement as two independent operations, i.e., knowledge injecti…

2024

Knowledgeable In-Context Tuning: Exploring and Exploiting Factual Knowledge for In-Context Learning

NAACL 2024findings

Large language models (LLMs) enable in-context learning (ICL) by conditioning on a few labeled training examples as a text-based prompt, eliminating the need for parameter updates and achieving competitive performance. In this paper, we demonstrate that factual knowledge is imperative for the perfor…

Cited by 3SourcePDFScholar
2024

Lifelong Knowledge Editing for LLMs with Retrieval-Augmented Continuous Prompt Learning

EMNLP 2024main

Model editing aims to correct outdated or erroneous knowledge in large language models (LLMs) without the need for costly retraining. Lifelong model editing is the most challenging task that caters to the continuous editing requirements of LLMs. Prior works primarily focus on single or batch editing…

2024

On the Role of Long-tail Knowledge in Retrieval Augmented Large Language Models

ACL 2024short

Retrieval augmented generation (RAG) exhibits outstanding performance in promoting the knowledge capabilities of large language models (LLMs) with retrieved documents related to user queries. However, RAG only focuses on improving the response quality of LLMs via enhancing queries indiscriminately w…

Cited by 9SourcePDFScholar
2024

PAI-Diffusion: Constructing and Serving a Family of Open Chinese Diffusion Models for Text-to-image Synthesis on the Cloud

ACL 2024system demonstrations

Text-to-image synthesis for the Chinese language poses unique challenges due to its large vocabulary size, and intricate character relationships. While existing diffusion models have shown promise in generating images from textual descriptions, they often neglect domain-specific contexts and lack ro…

2024

TRELM: Towards Robust and Efficient Pre-training for Knowledge-Enhanced Language Models

COLING 2024main

KEPLMs are pre-trained models that utilize external knowledge to enhance language understanding. Previous language models facilitated knowledge acquisition by incorporating knowledge-related pre-training tasks learned from relation triples in knowledge graphs. However, these models do not prioritize…

2024

TaiChi: Improving the Robustness of NLP Models by Seeking Common Ground While Reserving Differences

COLING 2024main

Recent studies have shown that Pre-trained Language Models (PLMs) are vulnerable to adversarial examples, crafted by introducing human-imperceptible perturbations to clean examples to deceive the models. This vulnerability stems from the divergence in the data distributions of clean and adversarial…

2024

Towards Understanding Cross and Self-Attention in Stable Diffusion for Text-Guided Image Editing

CVPR 2024poster

Deep Text-to-Image Synthesis (TIS) models such as Stable Diffusion have recently gained significant popularity for creative text-to-image generation. However for domain-specific scenarios tuning-free Text-guided Image Editing (TIE) is of greater importance for application developers. This approach m…

Cited by 50SourcePDFScholar
2024

UniPSDA: Unsupervised Pseudo Semantic Data Augmentation for Zero-Shot Cross-Lingual Natural Language Understanding

COLING 2024main

Cross-lingual representation learning transfers knowledge from resource-rich data to resource-scarce ones to improve the semantic understanding abilities of different languages. However, previous works rely on shallow unsupervised data generated by token surface matching, regardless of the global co…

2024

VideoCLIP-XL: Advancing Long Description Understanding for Video CLIP Models

EMNLP 2024main

Contrastive Language-Image Pre-training (CLIP) has been widely studied and applied in numerous applications. However, the emphasis on brief summary texts during pre-training prevents CLIP from understanding long descriptions. This issue is particularly acute regarding videos given that videos often…

Cited by 3SourcePDFScholar
2023

A Customized Text Sanitization Mechanism with Differential Privacy

ACL 2023findings

As privacy issues are receiving increasing attention within the Natural Language Processing (NLP) community, numerous methods have been proposed to sanitize texts subject to differential privacy. However, the state-of-the-art text sanitization mechanisms based on a relaxed notion of metric local dif…

2023

Boosting Prompt-Based Few-Shot Learners Through Out-of-Domain Knowledge Distillation

ICASSP 2023accepted

Prompt-based learning improves the performance of Pre-trained Language Models (PLMs) over few-shot learning and is suitable for low-resourced scenarios. However, it is challenging to deploy large PLMs online. Knowledge Distillation (KD) can compress large PLMs into small ones; yet, few-shot KD for p…

Cited by 0SourceScholar
2023

CocaCLIP: Exploring Distillation of Fully-Connected Knowledge Interaction Graph for Lightweight Text-Image Retrieval

ACL 2023industry

Large-scale pre-trained text-image models with dual-encoder architectures (such as CLIP) are typically adopted for various vision-language applications, including text-image retrieval. However, these models are still less practical on edge devices or for real-time situations, due to the substantial…

2023

FashionKLIP: Enhancing E-Commerce Image-Text Retrieval with Fashion Multi-Modal Conceptual Knowledge Graph

ACL 2023industry

Image-text retrieval is a core task in the multi-modal domain, which arises a lot of attention from both research and industry communities. Recently, the booming of visual-language pre-trained (VLP) models has greatly enhanced the performance of cross-modal retrieval. However, the fine-grained inter…

2023

From Complex to Simple: Unraveling the Cognitive Tree for Reasoning with Small Language Models

EMNLP 2023long findings

Reasoning is a distinctive human capacity, enabling us to address complex problems by breaking them down into a series of manageable cognitive steps. Yet, complex logical reasoning is still cumbersome for language models. Based on the dual process theory in cognitive science, we are the first to unr…

Cited by 0SourceScholar
2023

Learning Knowledge-Enhanced Contextual Language Representations for Domain Natural Language Understanding

EMNLP 2023long main

Knowledge-Enhanced Pre-trained Language Models (KEPLMs) improve the performance of various downstream NLP tasks by injecting knowledge facts from large-scale Knowledge Graphs (KGs). However, existing methods for pre-training KEPLMs with relational triples are difficult to be adapted to close domains…

Cited by 0SourceScholar
2023

MCL: Multi-Granularity Contrastive Learning Framework for Chinese NER

AAAI 2023technical

Recently, researchers have applied the word-character lattice framework to integrated word information, which has become very popular for Chinese named entity recognition (NER). However, prior approaches fuse word information by different variants of encoders such as Lattice LSTM or Flat-Lattice…

2023

Prompt-Distiller: Few-Shot Knowledge Distillation for Prompt-Based Language Learners with Dual Contrastive Learning

ICASSP 2023accepted

Prompt-based learning has improved the few-shot learning performance of large-scale Pre-trained Language Models (PLMs). Yet, it is challenging to deploy large-scale PLMs in resource-constrained environments for online applications. Knowledge Distillation (KD) is a promising approach for PLM compress…

Cited by 0SourceScholar
2023

Rapid Diffusion: Building Domain-Specific Text-to-Image Synthesizers with Fast Inference Speed

ACL 2023industry

Text-to-Image Synthesis (TIS) aims to generate images based on textual inputs. Recently, several large pre-trained diffusion models have been released to create high-quality images with pre-trained text encoders and diffusion-based image synthesizers. However, popular diffusion-based models from the…

2023

Towards Adaptive Prefix Tuning for Parameter-Efficient Language Model Fine-tuning

ACL 2023short

Fine-tuning large pre-trained language models on various downstream tasks with whole parameters is prohibitively expensive. Hence, Parameter-efficient fine-tuning has attracted attention that only optimizes a few task-specific parameters with the frozen pre-trained model. In this work, we focus on p…

2023

Uncertainty-Aware Self-Training for Low-Resource Neural Sequence Labeling

AAAI 2023technical

Neural sequence labeling (NSL) aims at assigning labels for input language tokens, which covers a broad range of applications, such as named entity recognition (NER) and slot filling, etc. However, the satisfying results achieved by traditional supervised-based approaches heavily depend on the large…

2023

Uncertainty-aware Parameter-Efficient Self-training for Semi-supervised Language Understanding

EMNLP 2023long findings

The recent success of large pre-trained language models (PLMs) heavily hinges on massive labeled data, which typically produces inferior performance in low-resource scenarios. To remedy this dilemma, we study self-training as one of the predominant semi-supervised learning (SSL) approaches, which ut…

Cited by 0SourcecodeScholar
2023

XtremeCLIP: Extremely Parameter-efficient Tuning for Low-resource Vision Language Understanding

ACL 2023findings

Recently, Contrastive Visual-Language Pre-training (CLIP) has demonstrated remarkable capability in various Visual Language Understanding (VLU) tasks. Yet, most CLIP-based methods require tasks-specific designs and sufficient training data. In this paper, we introduce a simple yet efficient paradigm…

2022

ARTIST: A Transformer-based Chinese Text-to-Image Synthesizer Digesting Linguistic and World Knowledge

EMNLP 2022finding

Text-to-Image Synthesis (TIS) is a popular task to convert natural language texts into realistic images. Recently, transformer-based TIS models (such as DALL-E) have been proposed using the encoder-decoder architectures. Yet, these billion-scale TIS models are difficult to tune and deploy in resourc…

2022

DKPLM: Decomposable Knowledge-Enhanced Pre-trained Language Model for Natural Language Understanding

AAAI 2022technical

Knowledge-Enhanced Pre-trained Language Models (KEPLMs) are pre-trained models with relation triples injecting from knowledge graphs to improve language understanding abilities.Experiments show that our model outperforms other KEPLMs significantly over zero-shot knowledge probing tasks and multiple…

2022

From Dense to Sparse: Contrastive Pruning for Better Pre-trained Language Model Compression

AAAI 2022technical

Pre-trained Language Models (PLMs) have achieved great success in various Natural Language Processing (NLP) tasks under the pre-training and fine-tuning paradigm. With large quantities of parameters, PLMs are computation-intensive and resource-hungry. Hence, model pruning has been introduced to co…

2022

HiCLRE: A Hierarchical Contrastive Learning Framework for Distantly Supervised Relation Extraction

ACL 2022findings

Distant supervision assumes that any sentence containing the same entity pairs reflects identical relationships. Previous works of distantly supervised relation extraction (DSRE) task generally focus on sentence-level or bag-level de-noising techniques independently, neglecting the explicit interact…

2022

KECP: Knowledge Enhanced Contrastive Prompting for Few-shot Extractive Question Answering

EMNLP 2022main

Extractive Question Answering (EQA) is one of the most essential tasks in Machine Reading Comprehension (MRC), which can be solved by fine-tuning the span selecting heads of Pre-trained Language Models (PLMs). However, most existing approaches for MRC may perform poorly in the few-shot learning scen…

2022

Revisiting and Advancing Chinese Natural Language Understanding with Accelerated Heterogeneous Knowledge Pre-training

EMNLP 2022industry

Recently, knowledge-enhanced pre-trained language models (KEPLMs) improve context-aware representations via learning from structured relations in knowledge bases, and/or linguistic knowledge from syntactic or dependency analysis. Unlike English, there is a lack of high-performing open-source Chinese…

2022

SpanProto: A Two-stage Span-based Prototypical Network for Few-shot Named Entity Recognition

EMNLP 2022main

Few-shot Named Entity Recognition (NER) aims to identify named entities with very little annotated data. Previous methods solve this problem based on token-wise classification, which ignores the information of entity boundaries, and inevitably the performance is affected by the massive non-entity to…

2022

Towards Unified Prompt Tuning for Few-shot Text Classification

EMNLP 2022finding

Prompt-based fine-tuning has boosted the performance of Pre-trained Language Models (PLMs) on few-shot text classification by employing task-specific prompts. Yet, PLMs are unfamiliar with prompt-style expressions during pre-training, which limits the few-shot learning performance on downstream task…

2021

KEML: A Knowledge-Enriched Meta-Learning Framework for Lexical Relation Classification

AAAI 2021technical

Lexical relations describe how concepts are semantically related, in the form of relation triples. The accurate prediction of lexical relations between concepts is challenging, due to the sparsity of patterns indicating the existence of such relations. We propose the Knowledge-Enriched Meta-Learning…

Cited by 15SourcePDFScholar
2021

Meta Distant Transfer Learning for Pre-trained Language Models

EMNLP 2021main

With the wide availability of Pre-trained Language Models (PLMs), multi-task fine-tuning across domains has been extensively applied. For tasks related to distant domains with different class label sets, PLMs may memorize non-transferable knowledge for the target domain and suffer from negative tran…

2021

Meta-KD: A Meta Knowledge Distillation Framework for Language Model Compression across Domains

ACL 2021long

Pre-trained language models have been applied to various NLP tasks with considerable performance gains. However, the large model sizes, together with the long inference time, limit the deployment of such models in real-time applications. One line of model compression approaches considers knowledge d…

2021

SMedBERT: A Knowledge-Enhanced Pre-trained Language Model with Structured Semantics for Medical Text Mining

ACL 2021long

Recently, the performance of Pre-trained Language Models (PLMs) has been significantly improved by injecting knowledge facts to enhance their abilities of language understanding. For medical domains, the background knowledge sources are especially useful, due to the massive medical terms and their c…

2021

TransPrompt: Towards an Automatic Transferable Prompting Framework for Few-shot Text Classification

EMNLP 2021main

Recent studies have shown that prompts improve the performance of large pre-trained language models for few-shot text classification. Yet, it is unclear how the prompting knowledge can be transferred across similar NLP tasks for the purpose of mutual reinforcement. Based on continuous prompt embeddi…

2021

UnClE: Explicitly Leveraging Semantic Similarity to Reduce the Parameters of Word Embeddings

EMNLP 2021finding

Natural language processing (NLP) models often require a massive number of parameters for word embeddings, which limits their application on mobile devices. Researchers have employed many approaches, e.g. adaptive inputs, to reduce the parameters of word embeddings. However, existing methods rarely…

2019

Video Generation From Single Semantic Label Map

CVPR 2019poster

This paper proposes the novel task of video generation conditioned on a SINGLE semantic label map, which provides a good balance between flexibility and quality in the generation process. Different from typical end-to-end approaches, which model both scene content and dynamics in a single step, we p…

Cited by 128PDFcodeScholar