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Haixin Wang

23 accepted papers

2026

ARLArena: Demystifying Policy Gradient Stability in Agentic Reinforcement Learning

ICML 2026poster

Agentic reinforcement learning (ARL) has rapidly gained attention as a promising paradigm for training agents to solve complex, multi-step interactive tasks. In this paper, we first propose $\textbf{ARLArena}$, a fair and systematic analysis framework that encompasses a broad spectrum of ARL algorit…

Cited by 0SourceScholar
2026

Benchmarking the Scientific Mind: Toward Evaluation of Complex-Reasoning Biomedical VQA

ICML 2026poster

Despite progress of Multimodal Large Language Models (MLLMs) in biomedical visual question answering (VQA), existing benchmarks provide limited assessment of their scientific reasoning capabilities. Most datasets adopt single-image question construction and outcome-oriented evaluation, where correct…

Cited by 0SourceScholar
2026

Dynamic Multi-sample Mixup with Gradient Exploration for Open-set Graph Anomaly Detection

ICLR 2026poster

This paper studies the problem of open-set graph anomaly detection, which aims to generalize a graph neural network (GNN) trained with a small number of both normal and abnormal nodes to detect unseen anomalies different from training anomalies during inference. This problem is highly challenging du…

Cited by 0SourceScholar
2026

MME-Emotion: A Holistic Evaluation Benchmark for Emotional Intelligence in Multimodal Large Language Models

ICLR 2026poster

Recent advances in multimodal large language models (MLLMs) have catalyzed transformative progress in affective computing, enabling models to exhibit emergent emotional intelligence. Despite substantial methodological progress, current emotional benchmarks remain limited, as it is still unknown: (a)…

Cited by 0SourcecodeScholar
2026

T$^2$PO: Uncertainty-Guided Exploration Control for Stable Multi-Turn Agentic Reinforcement Learning

ICML 2026spotlight

Recent progress in multi-turn reinforcement learning (RL) has significantly improved reasoning LLMs' performances on complex interactive tasks. Despite advances in stabilization techniques such as fine-grained credit assignment and trajectory filtering, instability remains pervasive and often leads …

Cited by 0SourceScholar
2025

CellVerse: Do Large Language Models Really Understand Cell Biology?

NeurIPS 2025poster

Recent studies have demonstrated the feasibility of modeling single-cell data as natural languages and the potential of leveraging powerful large language models (LLMs) for understanding cell biology. However, a comprehensive evaluation of LLMs' performance on language-driven single-cell analysis ta…

Cited by 0SourcecodeScholar
2025

Don’t Forget the Enjoin: FocalLoRA for Instruction Hierarchical Alignment in Large Language Models

NeurIPS 2025poster

Recent studies reveal that large language models (LLMs) often struggle to resolve conflicting instructions embedded within hierarchical prompts, resulting in decreased compliance with system-level directives and compromising the reliability of safety-critical applications. While earlier approaches a…

Cited by 0SourceScholar
2025

Efficient Traffic Prediction Through Spatio-Temporal Distillation

AAAI 2025technical

Graph neural networks (GNNs) have gained considerable attention in recent years for traffic flow prediction due to their ability to learn spatio-temporal pattern representations through a graph-based message-passing framework. Although GNNs have shown great promise in handling traffic datasets, thei…

2025

Flow Field Reconstruction with Sensor Placement Policy Learning

NeurIPS 2025poster

Flow‐field reconstruction from sparse sensor measurements remains a central challenge in modern fluid dynamics, as the need for high‐fidelity data often conflicts with practical limits on sensor deployment. Existing deep learning–based methods have demonstrated promising results, but they typically…

Cited by 0SourceScholar
2025

How Do Large Language Models Perform in Dynamical System Modeling

NAACL 2025findings

This paper studies the problem of dynamical system modeling, which involves the evolution of multiple interacting objects. Recent data-driven methods often utilize graph neural networks (GNNs) to learn these interactions by optimizing the neural network in an end-to-end fashion. While large language…

Cited by 1SourcePDFScholar
2025

Omni-Mol: Multitask Molecular Model for Any-to-any Modalities

NeurIPS 2025poster

In the molecular domain, numerous studies have explored the use of multimodal large language models (LLMs) to construct a general-purpose, multi-task molecular model. However, these efforts are still far from achieving a truly universal molecular model. We identify three key challenges in this endea…

Cited by 0SourceScholar
2025

Protein Large Language Models: A Comprehensive Survey

EMNLP 2025

Protein-specific large language models (ProteinLLMs) are revolutionizing protein science by enabling more efficient protein structure prediction, function annotation, and design. While existing surveys focus on specific aspects or applications, this work provides the first comprehensive overview of

2025

Time-IMM: A Dataset and Benchmark for Irregular Multimodal Multivariate Time Series

NeurIPS 2025poster

Time series data in real-world applications such as healthcare, climate modeling, and finance are often irregular, multimodal, and messy, with varying sampling rates, asynchronous modalities, and pervasive missingness. However, existing benchmarks typically assume clean, regularly sampled, unimodal…

Cited by 0SourcecodeScholar
2024

BENO: Boundary-embedded Neural Operators for Elliptic PDEs

ICLR 2024poster

Elliptic partial differential equations (PDEs) are a major class of time-independent PDEs that play a key role in many scientific and engineering domains such as fluid dynamics, plasma physics, and solid mechanics. Recently, neural operators have emerged as a promising technique to solve elliptic PD…

2024

LION: Implicit Vision Prompt Tuning

AAAI 2024technical

Despite recent promising performances across a range of vision tasks, vision Transformers still have an issue of high computational costs. Recently, vision prompt learning has provided an economical solution to this problem without fine-tuning the whole large-scale model. However, the efficiency an…

Cited by 26SourcePDFScholar
2023

CARE: Modeling Interacting Dynamics Under Temporal Environmental Variation

NeurIPS 2023poster

Modeling interacting dynamical systems, such as fluid dynamics and intermolecular interactions, is a fundamental research problem for understanding and simulating complex real-world systems. Many of these systems can be naturally represented by dynamic graphs, and graph neural network-based approach…

Cited by 11SourcePDFScholar
2023

IDEA: An Invariant Perspective for Efficient Domain Adaptive Image Retrieval

NeurIPS 2023poster

In this paper, we investigate the problem of unsupervised domain adaptive hashing, which leverage knowledge from a label-rich source domain to expedite learning to hash on a label-scarce target domain. Although numerous existing approaches attempt to incorporate transfer learning techniques into dee…

Cited by 6SourcePDFScholar
2023

Parameter-efficient Tuning of Large-scale Multimodal Foundation Model

NeurIPS 2023poster

Driven by the progress of large-scale pre-training, parameter-efficient transfer learning has gained immense popularity across different subfields of Artificial Intelligence. The core is to adapt the model to downstream tasks with only a small set of parameters. Recently, researchers have leveraged…

2023

Prototypical Mixing and Retrieval-Based Refinement for Label Noise-Resistant Image Retrieval

ICCV 2023poster

Label noise is pervasive in real-world applications, which influences the optimization of neural network models. This paper investigates a realistic but understudied problem of image retrieval under label noise, which could lead to severe overfitting or memorization of noisy samples during optimizat…

Cited by 5PDFcodeScholar
2022

Obj2Seq: Formatting Objects as Sequences with Class Prompt for Visual Tasks

NeurIPS 2022accept

Visual tasks vary a lot in their output formats and concerned contents, therefore it is hard to process them with an identical structure. One main obstacle lies in the high-dimensional outputs in object-level visual tasks. In this paper, we propose an object-centric vision framework, Obj2Seq. Obj2Se…

2022

Regularizing Vector Embedding in Bottom-Up Human Pose Estimation

ECCV 2022poster

"The embedding-based method such as Associative Embedding is popular in bottom-up human pose estimation. Methods under this framework group candidate keypoints according to the predicted identity embeddings. However, the identity embeddings of different instances are likely to be linearly inseparabl…

2022

Unified Matrix Coding for NN Originated MIP in H.266/VVC

ICASSP 2022accepted

Matrix-based Intra Prediction (MIP) is an effective coding algorithm in H.266/Versatile Video Coding (VVC) which is originated by Neural Networks (NN). With the requirement of low complexity, MIP is conducted by a matrix-vector multiplication. To handle with the diversity of video content, 30 matric…

Cited by 0SourceScholar
2020

Stacking Networks Dynamically for Image Restoration Based on the Plug-and-Play Framework

ECCV 2020poster

Recently, stacked networks show powerful performance in Image Restoration, such as challenging motion deblurring problems. However, the number of stacking levels is a hyper-parameter fine-tuned manually, making the stacking levels static during training without theoretical explanations for optimal s…

Cited by 12SourcePDFScholar