Search Results for author: Aidong Zhang

Found 18 papers, 9 papers with code

Spurious Correlations in Machine Learning: A Survey

no code implementations20 Feb 2024 Wenqian Ye, Guangtao Zheng, Xu Cao, Yunsheng Ma, Xia Hu, Aidong Zhang

Machine learning systems are known to be sensitive to spurious correlations between biased features of the inputs (e. g., background, texture, and secondary objects) and the corresponding labels.

Benchmarking Retrieval-Augmented Generation for Medicine

2 code implementations20 Feb 2024 Guangzhi Xiong, Qiao Jin, Zhiyong Lu, Aidong Zhang

However, a RAG system can involve multiple flexible components, and there is a lack of best practices regarding the optimal RAG setting for various medical purposes.

Benchmarking Information Retrieval +2

AdvST: Revisiting Data Augmentations for Single Domain Generalization

1 code implementation20 Dec 2023 Guangtao Zheng, Mengdi Huai, Aidong Zhang

Then, we propose Adversarial learning with Semantics Transformations (AdvST) that augments the source domain data with semantics transformations and learns a robust model with the augmented data.

Data Augmentation Domain Generalization

On the Role of Server Momentum in Federated Learning

no code implementations19 Dec 2023 Jianhui Sun, Xidong Wu, Heng Huang, Aidong Zhang

To our best knowledge, this is the first work that thoroughly analyzes the performances of server momentum with a hyperparameter scheduler and system heterogeneity.

Federated Learning

On Task-personalized Multimodal Few-shot Learning for Visually-rich Document Entity Retrieval

no code implementations1 Nov 2023 Jiayi Chen, Hanjun Dai, Bo Dai, Aidong Zhang, Wei Wei

However, prior works for Few-shot VDER mainly address the problem at the document level with a predefined global entity space, which doesn't account for the entity-level few-shot scenario: target entity types are locally personalized by each task and entity occurrences vary significantly among documents.

Contrastive Learning Entity Retrieval +2

Solving a Class of Non-Convex Minimax Optimization in Federated Learning

1 code implementation NeurIPS 2023 Xidong Wu, Jianhui Sun, Zhengmian Hu, Aidong Zhang, Heng Huang

We propose FL algorithms (FedSGDA+ and FedSGDA-M) and reduce existing complexity results for the most common minimax problems.

Federated Learning

Learning for Counterfactual Fairness from Observational Data

no code implementations17 Jul 2023 Jing Ma, Ruocheng Guo, Aidong Zhang, Jundong Li

A prerequisite for existing methods to achieve counterfactual fairness is the prior human knowledge of the causal model for the data.

Attribute Causal Discovery +4

Enhance Diffusion to Improve Robust Generalization

1 code implementation5 Jun 2023 Jianhui Sun, Sanchit Sinha, Aidong Zhang

We approximate the dynamic of PGD-AT by a continuous-time Stochastic Differential Equation (SDE), and show that the diffusion term of this SDE determines the robust generalization.

Understanding and Enhancing Robustness of Concept-based Models

no code implementations29 Nov 2022 Sanchit Sinha, Mengdi Huai, Jianhui Sun, Aidong Zhang

Subsequently, we propose a potential general adversarial training-based defense mechanism to increase robustness of these systems to the proposed malicious attacks.

Decision Making Medical Diagnosis

CLEAR: Generative Counterfactual Explanations on Graphs

no code implementations16 Oct 2022 Jing Ma, Ruocheng Guo, Saumitra Mishra, Aidong Zhang, Jundong Li

Counterfactual explanations promote explainability in machine learning models by answering the question "how should an input instance be perturbed to obtain a desired predicted label?".

counterfactual Counterfactual Explanation +1

Correlation Networks for Extreme Multi-label Text Classification

3 code implementations Proceedings of the 26th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining 2022 Guangxu Xun, Kishlay Jha, Jianhui Sun, Aidong Zhang

This paper develops the Correlation Networks (CorNet) architecture for the extreme multi-label text classification (XMTC) task, where the objective is to tag an input text sequence with the most relevant subset of labels from an extremely large label set.

Multi Label Text Classification Multi-Label Text Classification +2

Learning Fair Node Representations with Graph Counterfactual Fairness

1 code implementation10 Jan 2022 Jing Ma, Ruocheng Guo, Mengting Wan, Longqi Yang, Aidong Zhang, Jundong Li

In this framework, we generate counterfactuals corresponding to perturbations on each node's and their neighbors' sensitive attributes.

Attribute counterfactual +2

HetMAML: Task-Heterogeneous Model-Agnostic Meta-Learning for Few-Shot Learning Across Modalities

no code implementations17 May 2021 Jiayi Chen, Aidong Zhang

To deal with task heterogeneity and promote fast within-task adaptions for each type of tasks, in this paper, we propose HetMAML, a task-heterogeneous model-agnostic meta-learning framework, which can capture both the type-specific and globally shared knowledge and can achieve the balance between knowledge customization and generalization.

Few-Shot Learning Vocal Bursts Type Prediction

A Survey on Causal Inference

1 code implementation5 Feb 2020 Liuyi Yao, Zhixuan Chu, Sheng Li, Yaliang Li, Jing Gao, Aidong Zhang

Embraced with the rapidly developed machine learning area, various causal effect estimation methods for observational data have sprung up.

BIG-bench Machine Learning Causal Inference

Incorporating Biological Knowledge with Factor Graph Neural Network for Interpretable Deep Learning

no code implementations3 Jun 2019 Tianle Ma, Aidong Zhang

To address this challenge, we developed the Factor Graph Neural Network model that is interpretable and predictable by combining probabilistic graphical models with deep learning.

Representation Learning for Treatment Effect Estimation from Observational Data

1 code implementation NeurIPS 2018 Liuyi Yao, Sheng Li, Yaliang Li, Mengdi Huai, Jing Gao, Aidong Zhang

Estimating individual treatment effect (ITE) is a challenging problem in causal inference, due to the missing counterfactuals and the selection bias.

Causal Inference Representation Learning +1

Multi-view Factorization AutoEncoder with Network Constraints for Multi-omic Integrative Analysis

no code implementations6 Sep 2018 Tianle Ma, Aidong Zhang

Our framework employs deep representation learning to learn feature embeddings and patient embeddings simultaneously, enabling us to integrate feature interaction network and patient view similarity network constraints into the training objective.

Representation Learning

AffinityNet: semi-supervised few-shot learning for disease type prediction

1 code implementation22 May 2018 Tianle Ma, Aidong Zhang

The kNN attention pooling layer is a generalization of the Graph Attention Model (GAM), and can be applied to not only graphs but also any set of objects regardless of whether a graph is given or not.

Few-Shot Learning Graph Attention +2

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