← Search

Wei Du

29 accepted papers

2026

Efficient Few-Step Solution Generation via Discrete Flow Matching for Combinatorial Optimization

AAAI 2026technical

Combinatorial optimization problems (COPs) are fundamental to many real-world applications where efficiently producing high-quality solutions is critical. Recent advances in diffusion-based non-autoregressive models have reformulated solving COPs as a generative process, achieving promising results.

Cited by 0SourcePDFScholar
2026

Learning Efficient and Interpretable Multi-Agent Communication

ICLR 2026poster

Effective communication is crucial for multi-agent cooperation in partially observable environments. However, a fundamental trilemma exists among task performance, communication efficiency, and human interpretability. To resolve this, we propose a multi-agent communication framework via $\textbf{G}$…

Cited by 0SourceScholar
2026

Learning Whom to Align With: Progressive Anomaly Combination Detection for Partially View-Aligned Clustering

AAAI 2026technical

Partially View-aligned Clustering (PVC) addresses the challenge of partial view alignment in multi-view learning by leveraging complementary and consistent information. While existing PVC methods show promise, most rely on distance-based strategies that are sensitive to view-specific details and noi

Cited by 0SourcePDFScholar
2026

MLLM Enriched Explainable Multiple Clustering

AAAI 2026technical

Multiple clustering aims to uncover diverse latent structures within the data, enabling a more comprehensive understanding of complex datasets. However, existing approaches either heavily rely on user-supplied keywords or disregard user-interested clustering types, limiting the ability to discover t

Cited by 0SourcePDFScholar
2026

Scaling Generative Verifiers For Natural Language Mathematical Proof Verification And Selection

ICML 2026poster

Large language models have achieved remarkable success on final-answer mathematical problems, largely due to the ease of applying reinforcement learning with verifiable rewards. However, the reasoning underlying these solutions is often flawed. Advancing to rigorous proof-based mathematics requires …

Cited by 0SourceScholar
2026

SpaEF: Spatially Resolved Transcriptomics Data Element-Wise Denoising Framework Powered by Large Models

ICML 2026poster

For denoising Spatially Resolved Transcriptomics (SRT) data, existing methods often construct spot and gene graphs to model inter-spot and inter-gene relationships, respectively. However, these methods often introduce spurious similarity biases among spots when constructing the spot graph and fail t…

Cited by 0SourceScholar
2025

Causality Meets the Table: Debiasing LLMs for Faithful TableQA via Front-Door Intervention

NeurIPS 2025poster

Table Question Answering (TableQA) combines natural language understanding and structured data reasoning, posing challenges in semantic interpretation and logical inference. Recent advances in Large Language Models (LLMs) have improved TableQA performance through Direct Prompting and Agent paradigms…

Cited by 0SourceScholar
2025

Contrastive Auxiliary Learning with Structure Transformation for Heterogeneous Graphs

AAAI 2025technical

In recent years, methods based on heterogeneous graph neural networks (HGNNs) have been widely used for embedding heterogeneous graphs (HGs) due to their ability to effectively encode the rich information from HGs into low-dimensional node embeddings. Existing HGNNs focus on neighbor aggregation and…

2025

Multi-Agent Communication with Information Preserving Graph Contrastive Learning

IJCAI 2025

Recent research in cooperative Multi-Agent Reinforcement Learning (MARL) has shown significant interest in utilizing Graph Neural Networks (GNNs) for communication learning due to their strong ability to process feature and topological information of agents into message representations for downstrea

Cited by 0SourcePDFScholar
2025

OpenMathInstruct-2: Accelerating AI for Math with Massive Open-Source Instruction Data

ICLR 2025poster

Mathematical reasoning continues to be a critical challenge in large language model (LLM) development with significant interest. However, most of the cutting-edge progress in mathematical reasoning with LLMs has become closed-source due to lack of access to training data. This lack of data access li…

Cited by 41SourcePDFScholar
2025

Triples as the Key: Structuring Makes Decomposition and Verification Easier in LLM-based TableQA

ICLR 2025poster

As the mainstream approach, LLMs have been widely applied and researched in TableQA tasks. Currently, the core of LLM-based TableQA methods typically include three phases: question decomposition, sub-question TableQA reasoning, and answer verification. However, several challenges remain in this proc…

Cited by 0SourcePDFScholar
2024

Expressive Multi-Agent Communication via Identity-Aware Learning

AAAI 2024technical

Information sharing through communication is essential for tackling complex multi-agent reinforcement learning tasks. Many existing multi-agent communication protocols can be viewed as instances of message passing graph neural networks (GNNs). However, due to the significantly limited expressive abi…

Cited by 2SourcePDFScholar
2024

How Large Language Models Encode Context Knowledge? A Layer-Wise Probing Study

COLING 2024main

Previous work has showcased the intriguing capability of large language models (LLMs) in retrieving facts and processing context knowledge. However, only limited research exists on the layer-wise capability of LLMs to encode knowledge, which challenges our understanding of their internal mechanisms.…

2024

Investigating Multi-Hop Factual Shortcuts in Knowledge Editing of Large Language Models

ACL 2024long

Recent work has showcased the powerful capability of large language models (LLMs) in recalling knowledge and reasoning. However, the reliability of LLMs in combining these two capabilities into reasoning through multi-hop facts has not been widely explored. This paper systematically investigates the…

2024

Learning Efficient and Robust Multi-Agent Communication via Graph Information Bottleneck

AAAI 2024technical

Efficient communication learning among agents has been shown crucial for cooperative multi-agent reinforcement learning (MARL), as it can promote the action coordination of agents and ultimately improve performance. Graph neural network (GNN) provide a general paradigm for communication learning, wh…

Cited by 5SourcePDFScholar
2024

Multi-Teachers Distillation Strategy for Target-Oriented Collision-Free Grasping in Clutter

RA-L 2024

Grasping a target object in the cluttered environment is challenging due to potential collisions. Taking pre-grasp manipulations such as pushing, sliding and poking is an effective way to singulate the target. However, the success rate is heavily affected by the dimension disaster derived from compl

Cited by 5SourceScholar
2024

Revisiting the Information Capacity of Neural Network Watermarks: Upper Bound Estimation and Beyond

AAAI 2024technical

To trace the copyright of deep neural networks, an owner can embed its identity information into its model as a watermark. The capacity of the watermark quantify the maximal volume of information that can be verified from the watermarked model. Current studies on capacity focus on the ownership veri…

Cited by 4SourcePDFScholar
2024

UOR: Universal Backdoor Attacks on Pre-trained Language Models

ACL 2024findings

Task-agnostic and transferable backdoors implanted in pre-trained language models (PLMs) pose a severe security threat as they can be inherited to any downstream task. However, existing methods rely on manual selection of triggers and backdoor representations, hindering their effectiveness and unive…

Cited by 20SourcePDFScholar
2023

3DHacker: Spectrum-based Decision Boundary Generation for Hard-label 3D Point Cloud Attack

ICCV 2023poster

With the maturity of depth sensors, the vulnerability of 3D point cloud models has received increasing attention in various applications such as autonomous driving and robot navigation. Previous 3D adversarial attackers either follow the white-box setting to iteratively update the coordinate perturb…

Cited by 21PDFScholar
2023

Compressing Cross-Lingual Multi-Task Models at Qualtrics

AAAI 2023technical

Experience management is an emerging business area where organizations focus on understanding the feedback of customers and employees in order to improve their end-to-end experiences. This results in a unique set of machine learning problems to help understand how people feel, discover issues they c…

Cited by 2SourcePDFScholar
2023

Feature Distribution Fitting with Direction-Driven Weighting for Few-Shot Images Classification

AAAI 2023technical

Few-shot learning has received increasing attention and witnessed significant advances in recent years. However, most of the few-shot learning methods focus on the optimization of training process, and the learning of metric and sample generating networks. They ignore the importance of learning the…

Cited by 7SourcePDFScholar
2023

FedPrompt: Communication-Efficient and Privacy-Preserving Prompt Tuning in Federated Learning

ICASSP 2023accepted

Federated learning (FL) has enabled global model training on decentralized data in a privacy-preserving way. However, for tasks that utilize pre-trained language models (PLMs) with massive parameters, there are considerable communication costs. Prompt tuning, which tunes soft prompts without modifyi…

Cited by 0SourceScholar
2023

PLMmark: A Secure and Robust Black-Box Watermarking Framework for Pre-trained Language Models

AAAI 2023technical

The huge training overhead, considerable commercial value, and various potential security risks make it urgent to protect the intellectual property (IP) of Deep Neural Networks (DNNs). DNN watermarking has become a plausible method to meet this need. However, most of the existing watermarking scheme…

Cited by 52SourcePDFScholar
2022

PPT: Backdoor Attacks on Pre-trained Models via Poisoned Prompt Tuning

IJCAI 2022poster

Recently, prompt tuning has shown remarkable performance as a new learning paradigm, which freezes pre-trained language models (PLMs) and only tunes some soft prompts. A fixed PLM only needs to be loaded with different prompts to adapt different downstream tasks. However, the prompts associated with…

Cited by 55SourcePDFScholar
2019

Escaping Local Minima in Search-Based Planning using Soft Duplicate Detection

IROS 2019poster

Search-based planning for relatively low-dimensional motion-planning problems such as for autonomous navigation and autonomous flight has been shown to be very successful. Such framework relies on laying a grid over a state-space and constructing a set of actions (motion primitives) that connect the…

Cited by 12SourceScholar