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Xiangxin Zhou

24 accepted papers

2026

Reinforcing General Reasoning Without Verifiers

ICLR 2026poster

The recent paradigm shift towards training large language models (LLMs) using DeepSeek-R1-Zero-style reinforcement learning (RL) on verifiable rewards has led to impressive advancements in code and mathematical reasoning. However, this methodology is limited to tasks where rule-based answer verifica…

Cited by 0SourcecodeScholar
2026

Rethinking the Trust Region in LLM Reinforcement Learning

ICML 2026poster

Reinforcement learning (RL) has become a cornerstone for fine-tuning Large Language Models (LLMs), with Proximal Policy Optimization (PPO) serving as the de facto standard algorithm. Despite its ubiquity, we argue that the core ratio clipping mechanism in PPO is structurally ill-suited for the large…

Cited by 0SourceScholar
2026

Variational Reasoning for Language Models

ICLR 2026poster

We introduce a **variational reasoning** framework for language models that treats thinking traces as latent variables and optimizes them through variational inference. Starting from the evidence lower bound (ELBO), we extend it to a multi-trace objective for tighter bounds and propose a forward-KL…

Cited by 0SourcecodeScholar
2026

h-MINT: Modeling Pocket-Ligand Binding with Hierarchical Molecular Interaction Network

ICLR 2026poster

Accurate molecular representations are critical for drug discovery, and a central challenge lies in capturing the chemical environment of molecular fragments, as key interactions, such as H-bond and π stacking—occur only under specific local conditions. Most existing approaches represent molecules a…

Cited by 0SourcecodeScholar
2025

An All-Atom Generative Model for Designing Protein Complexes

ICML 2025poster

Proteins typically exist in complexes, interacting with other proteins or biomolecules to perform their specific biological roles. Research on single-chain protein modeling has been extensively and deeply explored, with advancements seen in models like the series of ESM and AlphaFold2. Despite these…

2025

Designing Cyclic Peptides via Harmonic SDE with Atom-Bond Modeling

ICML 2025poster

Cyclic peptides offer inherent advantages in pharmaceuticals. For example, cyclic peptides are more resistant to enzymatic hydrolysis compared to linear peptides and usually exhibit excellent stability and affinity. Although deep generative models have achieved great success in linear peptide design…

Cited by 0SourcePDFScholar
2025

Group Ligands Docking to Protein Pockets

ICLR 2025poster

Molecular docking is a key task in computational biology that has attracted increasing interest from the machine learning community. While existing methods have achieved success, they generally treat each protein-ligand pair in isolation. Inspired by the biochemical observation that ligands binding…

Cited by 1SourcePDFScholar
2025

Integrating Protein Dynamics into Structure-Based Drug Design via Full-Atom Stochastic Flows

ICLR 2025poster

The dynamic nature of proteins, influenced by ligand interactions, is essential for comprehending protein function and progressing drug discovery. Traditional structure-based drug design (SBDD) approaches typically target binding sites with rigid structures, limiting their practical application in d…

Cited by 0SourcePDFScholar
2025

Modeling All-Atom Glycan Structures via Hierarchical Message Passing and Multi-Scale Pre-training

ICML 2025poster

Understanding the various properties of glycans with machine learning has shown some preliminary promise. However, previous methods mainly focused on modeling the backbone structure of glycans as graphs of monosaccharides (i.e., sugar units), while they neglected the atomic structures underlying eac…

2025

OS Agents: A Survey on MLLM-based Agents for Computer, Phone and Browser Use

ACL 2025long

The dream to create AI assistants as capable and versatile as the fictional J.A.R.V.I.S from Iron Man has long captivated imaginations. With the evolution of multi-modal large language models ((M)LLMs), this dream is closer to reality, as (M)LLM-based Agents using computers, mobile phones and web br…

2025

ProteinBench: A Holistic Evaluation of Protein Foundation Models

ICLR 2025poster

Recent years have witnessed a surge in the development of protein foundation models, significantly improving performance in protein prediction and generative tasks ranging from 3D structure prediction and protein design to conformational dynamics. However, the capabilities and limitations associated…

Cited by 6SourcePDFScholar
2025

UniMatch: Universal Matching from Atom to Task for Few-Shot Drug Discovery

ICLR 2025spotlight

Drug discovery is crucial for identifying candidate drugs for various diseases. However, its low success rate often results in a scarcity of annotations, posing a few-shot learning problem. Existing methods primarily focus on single-scale features, overlooking the hierarchical molecular structures t…

2024

Antigen-Specific Antibody Design via Direct Energy-based Preference Optimization

NeurIPS 2024poster

Antibody design, a crucial task with significant implications across various disciplines such as therapeutics and biology, presents considerable challenges due to its intricate nature. In this paper, we tackle antigen-specific antibody sequence-structure co-design as an optimization problem towards…

Cited by 21SourcePDFScholar
2024

Binding-Adaptive Diffusion Models for Structure-Based Drug Design

AAAI 2024technical

Structure-based drug design (SBDD) aims to generate 3D ligand molecules that bind to specific protein targets. Existing 3D deep generative models including diffusion models have shown great promise for SBDD. However, it is complex to capture the essential protein-ligand interactions exactly in 3D sp…

2024

DecompOpt: Controllable and Decomposed Diffusion Models for Structure-based Molecular Optimization

ICLR 2024poster

Recently, 3D generative models have shown promising performances in structure-based drug design by learning to generate ligands given target binding sites. However, only modeling the target-ligand distribution can hardly fulfill one of the main goals in drug discovery -- designing novel ligands with…

Cited by 15SourcePDFScholar
2024

Interaction-based Retrieval-augmented Diffusion Models for Protein-specific 3D Molecule Generation

ICML 2024poster

Generating ligand molecules that bind to specific protein targets via generative models holds substantial promise for advancing structure-based drug design. Existing methods generate molecules from scratch without reference or template ligands, which poses challenges in model optimization and may yi…

2024

Protein-Ligand Interaction Prior for Binding-aware 3D Molecule Diffusion Models

ICLR 2024poster

Generating 3D ligand molecules that bind to specific protein targets via diffusion models has shown great promise for structure-based drug design. The key idea is to disrupt molecules into noise through a fixed forward process and learn its reverse process to generate molecules from noise in a denoi…

2024

Reprogramming Pretrained Target-Specific Diffusion Models for Dual-Target Drug Design

NeurIPS 2024poster

Dual-target therapeutic strategies have become a compelling approach and attracted significant attention due to various benefits, such as their potential in overcoming drug resistance in cancer therapy. Considering the tremendous success that deep generative models have achieved in structure-based d…

2024

Stabilizing Policy Gradients for Stochastic Differential Equations via Consistency with Perturbation Process

ICML 2024poster

Considering generating samples with high rewards, we focus on optimizing deep neural networks parameterized stochastic differential equations (SDEs), the advanced generative models with high expressiveness, with policy gradient, the leading algorithm in reinforcement learning. Nevertheless, when app…

Cited by 1SourcePDFScholar
2023

DecompDiff: Diffusion Models with Decomposed Priors for Structure-Based Drug Design

ICML 2023poster

Designing 3D ligands within a target binding site is a fundamental task in drug discovery. Existing structured-based drug design methods treat all ligand atoms equally, which ignores different roles of atoms in the ligand for drug design and can be less efficient for exploring the large drug-like mo…

2023

GSLB: The Graph Structure Learning Benchmark

NeurIPS 2023poster

Graph Structure Learning (GSL) has recently garnered considerable attention due to its ability to optimize both the parameters of Graph Neural Networks (GNNs) and the computation graph structure simultaneously. Despite the proliferation of GSL methods developed in recent years, there is no standard…

2019

Global Sparse Momentum SGD for Pruning Very Deep Neural Networks

NeurIPS 2019poster

Deep Neural Network (DNN) is powerful but computationally expensive and memory intensive, thus impeding its practical usage on resource-constrained front-end devices. DNN pruning is an approach for deep model compression, which aims at eliminating some parameters with tolerable performance degradati…