Xiaoqian Wang (王小倩)

headshot 

Assistant Professor
Electrical and Computer Engineering
Biomedical Engineering (by courtesy)
Regenstrief Center for Healthcare Engineering
Purdue University, West Lafayette

516 Northwestern Ave
West Lafayette, IN 47906
Office: WANG 3061

Email: joywang@purdue.edu
Phone: (765)494-2045

About Me

My research interests are generally trustworthy machine learning. I am particularly interested in designing novel machine learning models to improve interpretability, fairness, and robustness. I also work on the intersection of machine learning and bioinformatics, healthcare. I'm an recipient of the 2022 NSF CAREER award.

I obtained my Ph.D. degree from the University of Pittsburgh in 2019, and my advisor is Prof. Heng Huang. Prior to this, I received my bachelor degree from Zhejiang University in 2013.

I am looking for highly self-motivated Ph.D. students to work on emerging challenges in Machine/Deep Learning and/or Healthcare. Please send me your CV and transcripts if you are interested.

Students

Taeuk Jang (PhD student)
Yipei Wang (PhD student)
Junyi Chai (PhD student)
Shenyu Lu (PhD student)
You-Ru Lu (PhD student), co-advising with Prof. Dengfeng Sun
Tianchun Li (PhD student), co-advising with Prof. Pengyi Shi
Hoin Jung (PhD student)
Zhaoying Pan (PhD student)
Xiaoze Liu (PhD student), co-advising with Prof. Jing Gao

Selected Publications

Algorithmic Fairness

Debiasing Attention Mechanism in Transformer without Demographics
Shenyu Lu, Yipei Wang, and Xiaoqian Wang
In the Twelfth International Conference on Learning Representations (ICLR 2024)
Accepted to Appear

Difficulty-based Sampling for Debiased Contrastive Representation Learning
Taeuk Jang, and Xiaoqian Wang
In Proceedings of the 2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR 2023) [Code]

Group-Aware Threshold Adaptation for Fair Classification
Taeuk Jang, Pengyi Shi, and Xiaoqian Wang
In Proceedings of the Thirty-Sixth AAAI Conference on Artificial Intelligence (AAAI 2022) [Code]

Self-Supervised Fair Representation Learning without Demographics
Junyi Chai, and Xiaoqian Wang
In the Thirty-Sixth Conference on Neural Information Processing Systems (NeurIPS 2022) [Code]

Fairness without Demographics through Knowledge Distillation
Junyi Chai, Taeuk Jang, and Xiaoqian Wang
In the Thirty-Sixth Conference on Neural Information Processing Systems (NeurIPS 2022) [Code]

Distributional Robustness

On the Effect of Key Factors in Spurious Correlation: A theoretical Perspective
Yipei Wang, and Xiaoqian Wang
In the 27th International Conference on Artificial Intelligence and Statistics (AISTATS 2024)
Accepted to Appear

Explainable AI

Why Not Other Classes?: Towards Class-Contrastive Back-Propagation Explanations
Yipei Wang, and Xiaoqian Wang
In the Thirty-Sixth Conference on Neural Information Processing Systems (NeurIPS 2022) [Code]

Self-Interpretable Model with Transformation Equivariant Interpretation
Yipei Wang, and Xiaoqian Wang
In Proceedings of the Thirty-Fifth Conference on Neural Information Processing Systems (NeurIPS 2021) [Code]

Shapley Explanation Networks
Rui Wang, Xiaoqian Wang, and David Inouye
In the Ninth International Conference on Learning Representations (ICLR 2021) [Code]

Machine Learning in Healthcare and Biomedical Domain

Cumulative Difference Learning VAE for Time-Series with Temporally Correlated Inflow-Outflow
Tianchun Li, Chengxiang Wu, Pengyi Shi, and Xiaoqian Wang
In the Thirty-Eighth AAAI Conference on Artificial Intelligence (AAAI 2024)
Accepted to Appear

Unveiling Dynamics in Standard MRI Sequences through Motion Magnification Techniques
Zhaoying Pan, Vidhya Vijayakrishnan Nair, Qiuting Wen, Yunjie Tong, and Xiaoqian Wang
In Organization for Human Brain Mapping (OHBM 2024)
Accepted for a Poster Presentation

[Full Publication List] [Google Scholar] [DBLP]