Search Results for author: Tianxiang Zhao

Found 17 papers, 6 papers with code

Analyzing and Reducing Catastrophic Forgetting in Parameter Efficient Tuning

1 code implementation29 Feb 2024 Weijieying Ren, Xinlong Li, Lei Wang, Tianxiang Zhao, Wei Qin

Through extensive experiments, we uncover the mode connectivity phenomenon in the LLMs continual learning scenario and find that it can strike a balance between plasticity and stability.

Continual Learning Language Modelling +1

Disambiguated Node Classification with Graph Neural Networks

1 code implementation13 Feb 2024 Tianxiang Zhao, Xiang Zhang, Suhang Wang

Graph Neural Networks (GNNs) have demonstrated significant success in learning from graph-structured data across various domains.

Classification Contrastive Learning +2

Distribution Consistency based Self-Training for Graph Neural Networks with Sparse Labels

no code implementations18 Jan 2024 Fali Wang, Tianxiang Zhao, Suhang Wang

Self-training has emerged as a widely popular framework to leverage the abundance of unlabeled data, which expands the training set by assigning pseudo-labels to selected unlabeled nodes.

Node Classification

Interpretable Imitation Learning with Dynamic Causal Relations

no code implementations30 Sep 2023 Tianxiang Zhao, Wenchao Yu, Suhang Wang, Lu Wang, Xiang Zhang, Yuncong Chen, Yanchi Liu, Wei Cheng, Haifeng Chen

After the model is learned, we can obtain causal relations among states and action variables behind its decisions, exposing policies learned by it.

Causal Discovery Imitation Learning

T-SaS: Toward Shift-aware Dynamic Adaptation for Streaming Data

no code implementations5 Sep 2023 Weijieying Ren, Tianxiang Zhao, Wei Qin, Kunpeng Liu

Discovering the shifted behaviors and the evolving patterns underlying the streaming data are important to understand the dynamic system.

Skill Disentanglement for Imitation Learning from Suboptimal Demonstrations

1 code implementation13 Jun 2023 Tianxiang Zhao, Wenchao Yu, Suhang Wang, Lu Wang, Xiang Zhang, Yuncong Chen, Yanchi Liu, Wei Cheng, Haifeng Chen

Imitation learning has achieved great success in many sequential decision-making tasks, in which a neural agent is learned by imitating collected human demonstrations.

Disentanglement Imitation Learning

Faithful and Consistent Graph Neural Network Explanations with Rationale Alignment

no code implementations7 Jan 2023 Tianxiang Zhao, Dongsheng Luo, Xiang Zhang, Suhang Wang

Instance-level GNN explanation aims to discover critical input elements, like nodes or edges, that the target GNN relies upon for making predictions.

Inductive Bias

TopoImb: Toward Topology-level Imbalance in Learning from Graphs

no code implementations16 Dec 2022 Tianxiang Zhao, Dongsheng Luo, Xiang Zhang, Suhang Wang

To address this problem, we propose a new framework {\method} and design (1 a topology extractor, which automatically identifies the topology group for each instance with explicit memory cells, (2 a training modulator, which modulates the learning process of the target GNN model to prevent the case of topology-group-wise under-representation.

Explanation Guided Contrastive Learning for Sequential Recommendation

1 code implementation3 Sep 2022 Lei Wang, Ee-Peng Lim, Zhiwei Liu, Tianxiang Zhao

Recently, contrastive learning has been applied to the sequential recommendation task to address data sparsity caused by users with few item interactions and items with few user adoptions.

Contrastive Learning Representation Learning +1

Synthetic Over-sampling for Imbalanced Node Classification with Graph Neural Networks

no code implementations10 Jun 2022 Tianxiang Zhao, Xiang Zhang, Suhang Wang

In many real-world scenarios, node classes are imbalanced, with some majority classes making up most parts of the graph.

Node Classification

Towards Faithful and Consistent Explanations for Graph Neural Networks

no code implementations27 May 2022 Tianxiang Zhao, Dongsheng Luo, Xiang Zhang, Suhang Wang

Two typical reasons of spurious explanations are identified: confounding effect of latent variables like distribution shift, and causal factors distinct from the original input.

Inductive Bias Network Interpretation

A Comprehensive Survey on Trustworthy Graph Neural Networks: Privacy, Robustness, Fairness, and Explainability

no code implementations18 Apr 2022 Enyan Dai, Tianxiang Zhao, Huaisheng Zhu, Junjie Xu, Zhimeng Guo, Hui Liu, Jiliang Tang, Suhang Wang

Despite their great potential in benefiting humans in the real world, recent study shows that GNNs can leak private information, are vulnerable to adversarial attacks, can inherit and magnify societal bias from training data and lack interpretability, which have risk of causing unintentional harm to the users and society.

Drug Discovery Fairness

Exploring Edge Disentanglement for Node Classification

no code implementations23 Feb 2022 Tianxiang Zhao, Xiang Zhang, Suhang Wang

Concretely, these self-supervision tasks are enforced on a designed edge disentanglement module to be trained jointly with the downstream node classification task to encourage automatic edge disentanglement.

Classification Disentanglement +2

Times Series Forecasting for Urban Building Energy Consumption Based on Graph Convolutional Network

no code implementations27 May 2021 Yuqing Hu, Xiaoyuan Cheng, Suhang Wang, Jianli Chen, Tianxiang Zhao, Enyan Dai

After discussion, it is found that data-driven models integrated engineering or physical knowledge can significantly improve the urban building energy simulation.

Time Series Analysis

Towards Fair Classifiers Without Sensitive Attributes: Exploring Biases in Related Features

1 code implementation29 Apr 2021 Tianxiang Zhao, Enyan Dai, Kai Shu, Suhang Wang

Though the sensitive attribute of each data sample is unknown, we observe that there are usually some non-sensitive features in the training data that are highly correlated with sensitive attributes, which can be used to alleviate the bias.

Attribute BIG-bench Machine Learning +1

Semi-Supervised Graph-to-Graph Translation

no code implementations16 Mar 2021 Tianxiang Zhao, Xianfeng Tang, Xiang Zhang, Suhang Wang

For example, we can easily build graphs representing peoples' shared music tastes and those representing co-purchase behavior, but a well paired dataset is much more expensive to obtain.

Graph-To-Graph Translation Translation

GraphSMOTE: Imbalanced Node Classification on Graphs with Graph Neural Networks

2 code implementations16 Mar 2021 Tianxiang Zhao, Xiang Zhang, Suhang Wang

This task is non-trivial, as previous synthetic minority over-sampling algorithms fail to provide relation information for newly synthesized samples, which is vital for learning on graphs.

Classification General Classification +2

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