1 code implementation • 27 Oct 2024 • Zaixi Zhang, Ruofan Jin, Kaidi Fu, Le Cong, Marinka Zitnik, Mengdi Wang
Protein structure is key to understanding protein function and is essential for progress in bioengineering, drug discovery, and molecular biology.
1 code implementation • 15 Oct 2024 • Jiaxian Yan, Zaixi Zhang, Jintao Zhu, Kai Zhang, Jianfeng Pei, Qi Liu
Despite these advancements, current methods are often tailored for specific docking settings, and limitations such as the neglect of protein side-chain structures, difficulties in handling large binding pockets, and challenges in predicting physically valid structures exist.
no code implementations • 29 Sep 2024 • Zaixi Zhang, Marinka Zitnik, Qi Liu
One critical step in this process involves designing protein pockets, the protein interface binding with the ligand.
no code implementations • 29 Sep 2024 • Zaixi Zhang, Mengdi Wang, Qi Liu
Structure-based drug design (SBDD), which aims to generate 3D ligand molecules binding to target proteins, is a fundamental task in drug discovery.
1 code implementation • 14 Aug 2024 • Jingyu Peng, Qi Liu, Linan Yue, Zaixi Zhang, Kai Zhang, Yunhao Sha
Subsequently, the predictor mimics the decision-making process, which makes predictions based on the generated explanation.
1 code implementation • 16 Jul 2024 • Ouxiang Li, Yanbin Hao, Zhicai Wang, Bin Zhu, Shuo Wang, Zaixi Zhang, Fuli Feng
To alleviate these issues, leveraging on diffusion models' remarkable synthesis capabilities, we propose Diffusion-based Model Inversion (Diff-MI) attacks.
no code implementations • 4 Jun 2024 • Hongkang Li, Meng Wang, Tengfei Ma, Sijia Liu, Zaixi Zhang, Pin-Yu Chen
Focusing on a graph data model with discriminative nodes that determine node labels and non-discriminative nodes that are class-irrelevant, we characterize the sample complexity required to achieve a desirable generalization error by training with stochastic gradient descent (SGD).
1 code implementation • 4 Jun 2024 • Kangyu Zheng, Yingzhou Lu, Zaixi Zhang, Zhongwei Wan, Yao Ma, Marinka Zitnik, Tianfan Fu
Currently, the field of structure-based drug design is dominated by three main types of algorithms: search-based algorithms, deep generative models, and reinforcement learning.
no code implementations • 15 Mar 2024 • Odin Zhang, Yufei Huang, Shichen Cheng, Mengyao Yu, Xujun Zhang, Haitao Lin, Yundian Zeng, Mingyang Wang, Zhenxing Wu, Huifeng Zhao, Zaixi Zhang, Chenqing Hua, Yu Kang, Sunliang Cui, Peichen Pan, Chang-Yu Hsieh, Tingjun Hou
Most earlier 3D structure-based molecular generation approaches follow an atom-wise paradigm, incrementally adding atoms to a partially built molecular fragment within protein pockets.
no code implementations • 26 Jan 2024 • Zaixi Zhang, Qingyong Hu, Yang Yu, Weibo Gao, Qi Liu
However, existing methods have the following limitations: (1) The links between local subgraphs are missing in subgraph federated learning.
1 code implementation • 15 Jan 2024 • Zhilin Huang, Ling Yang, Zaixi Zhang, Xiangxin Zhou, Yu Bao, Xiawu Zheng, Yuwei Yang, Yu Wang, Wenming Yang
Then the selected protein-ligand subcomplex is processed with SE(3)-equivariant neural networks, and transmitted back to each atom of the complex for augmenting the target-aware 3D molecule diffusion generation with binding interaction information.
no code implementations • 30 Nov 2023 • Jiaxian Yan, Zaixi Zhang, Kai Zhang, Qi Liu
This model is then paired with GPU-accelerated sampling algorithms.
no code implementations • 11 Nov 2023 • Ziyang Xiang, Zaixi Zhang, Qi Liu
We introduce an approach named the Sparse Attention-based neural network for Code Classification (SACC) in this paper.
1 code implementation • NeurIPS 2023 • Yang Yu, Qi Liu, Kai Zhang, Yuren Zhang, Chao Song, Min Hou, Yuqing Yuan, Zhihao Ye, Zaixi Zhang, Sanshi Lei Yu
Specifically, we adopt a multiple pairwise ranking loss which trains the user model to capture the similarity orders between the implicitly augmented view, the explicitly augmented view, and views from other users.
1 code implementation • NeurIPS 2023 • Zaixi Zhang, Zepu Lu, Zhongkai Hao, Marinka Zitnik, Qi Liu
In the initial stage, the residue types and backbone coordinates are refined using a hierarchical context encoder, complemented by two structure refinement modules that capture both inter-residue and pocket-ligand interactions.
1 code implementation • 20 Jun 2023 • Zaixi Zhang, Jiaxian Yan, Yining Huang, Qi Liu, Enhong Chen, Mengdi Wang, Marinka Zitnik
Structure-based drug design (SBDD) leverages the three-dimensional geometry of proteins to identify potential drug candidates.
1 code implementation • 22 May 2023 • Zaixi Zhang, Qi Liu
Generating molecules with high binding affinities to target proteins (a. k. a.
1 code implementation • 12 Apr 2023 • Zaixi Zhang, Qi Liu, Chee-Kong Lee, Chang-Yu Hsieh, Enhong Chen
Our extensive investigation reveals that the 2D topology and 3D geometry contain intrinsically complementary information in molecule design, and provide new insights into machine learning-based molecule representation and generation.
1 code implementation • CVPR 2023 • Zaixi Zhang, Qi Liu, Zhicai Wang, Zepu Lu, Qingyong Hu
The other clean model dedicates to capturing the desired causal effects by minimizing the mutual information with the confounding representations from the backdoored model and employing a sample-wise re-weighting scheme.
1 code implementation • 11 Dec 2022 • Yang Yu, Qi Liu, Likang Wu, Runlong Yu, Sanshi Lei Yu, Zaixi Zhang
Experiments on two public datasets show that ClusterAttack can effectively degrade the performance of FedRec systems while circumventing many defense methods, and UNION can improve the resistance of the system against various untargeted attacks, including our ClusterAttack.
no code implementations • 20 Oct 2022 • Xiaoyu Cao, Jinyuan Jia, Zaixi Zhang, Neil Zhenqiang Gong
Existing defenses focus on preventing a small number of malicious clients from poisoning the global model via robust federated learning methods and detecting malicious clients when there are a large number of them.
1 code implementation • 8 Oct 2022 • Zaixi Zhang, Qi Liu, Qingyong Hu, Chee-Kong Lee
The Transformer architecture has achieved remarkable success in a number of domains including natural language processing and computer vision.
no code implementations • 2 Oct 2022 • Xiaoyu Cao, Zaixi Zhang, Jinyuan Jia, Neil Zhenqiang Gong
Our key idea is to divide the clients into groups, learn a global model for each group of clients using any existing federated learning method, and take a majority vote among the global models to classify a test input.
no code implementations • 16 Sep 2022 • Zaixi Zhang, Qi Liu, Zhenya Huang, Hao Wang, Chee-Kong Lee, Enhong Chen
One famous privacy attack against data analysis models is the model inversion attack, which aims to infer sensitive data in the training dataset and leads to great privacy concerns.
1 code implementation • 19 Jul 2022 • Zaixi Zhang, Xiaoyu Cao, Jinyuan Jia, Neil Zhenqiang Gong
FLDetector aims to detect and remove the majority of the malicious clients such that a Byzantine-robust FL method can learn an accurate global model using the remaining clients.
1 code implementation • 2 Dec 2021 • Zaixi Zhang, Qi Liu, Hao Wang, Chengqiang Lu, Cheekong Lee
In this work, we propose Prototype Graph Neural Network (ProtGNN), which combines prototype learning with GNNs and provides a new perspective on the explanations of GNNs.
1 code implementation • NeurIPS 2021 • Zaixi Zhang, Qi Liu, Hao Wang, Chengqiang Lu, Chee-Kong Lee
To bridge this gap, we propose Motif-based Graph Self-supervised Learning (MGSSL) by introducing a novel self-supervised motif generation framework for GNNs.
1 code implementation • 5 Jun 2021 • Zaixi Zhang, Qi Liu, Zhenya Huang, Hao Wang, Chengqiang Lu, Chuanren Liu, Enhong Chen
Then we design a graph auto-encoder module to efficiently exploit graph topology, node attributes, and target model parameters for edge inference.
2 code implementations • 19 Jun 2020 • Zaixi Zhang, Jinyuan Jia, Binghui Wang, Neil Zhenqiang Gong
Specifically, we propose a \emph{subgraph based backdoor attack} to GNN for graph classification.