Research
Research Interests
Generative Data Science
Trustworthy Machine Learning
Demand Learning and Dynamic Pricing
Online Decision Making Algorithm Design
Generative Data Science
Generative Data Fidelity
Lan Tao, Shirong Xu, Chi-Hua Wang, Namjoon Suh, Guang Cheng, Discriminative Estimation of Total Variation Distance: A Fidelity Auditor for Generative Data. [Arxiv]
Kwok Tung Sum Thomas, Chi-Hua Wang, Guang Cheng. DEREC-SIMPRO: unlock Language Model benefits to advance Data Clean Room Synthesis. [Arxiv]
Generative Data Utility
Yu Xia, Chi-Hua Wang, Joshua Mabry, Guang Cheng, Advancing Retail Data Science: Comprehensive Evaluation of Synthetic Data. [Arxiv]
Din-Yin Hsieh, Chi-Hua Wang, Guang Cheng, Improve Fidelity and Utility of Synthetic Credit Card Transaction Time Series from Data-centric Perspective. [ICAIF 2023 - Workshop][Arxiv]
Yinan Cheng, Chi-Hua Wang, Vamsi K. Potluru, Tucker Balch, Guang Cheng, Downstream Task-Oriented Generative Model Selections on Synthetic Data Training for Fraud Detection Models [ICAIF 2022 - Workshop][Arxiv]
Generative Data Privacy
Joshua Ward, Chi-Hua Wang, Guang Cheng, Data Plagiarism Index: Characterizing the Privacy Risk of Data-Copying in Tabular Generative Models [Arxiv]
Yucong Liu, Chi-Hua Wang, Guang Cheng, On the Utility Recovery Incapability of Neural Net-based Differential Private Tabular Training Data Synthesizer under Privacy Deregulation, submitted [Arxiv]
Trustworthy Machine Learning
Privacy Auditing
Chi-Hua Wang, Guang Cheng, A unified data-centric framework to identify gradient descent vulnerabilities [Arxiv]
Machine Unlearning
Yuantong Li, Chi-Hua Wang, Guang Cheng, Online Forgetting Process for Linear Regression Models [AISTAT2021][Arxiv]
Federated Learning
Demand Learning and Dynamic Pricing
High-dimensional Dynamic Pricing
Chi-Hua Wang, Zhanyu Wang, Will Wei Sun & Guang Cheng, Online Regularization toward Always-Valid High-Dimensional Dynamic Pricing. [Journal of the American Statistical Association -- T&M (2023)][Arxiv]
Non-stationary Dynamic Pricing
Po-Yi Liu, Chi-Hua Wang, Henghsiu Tsai, Non-Stationary Dynamic Pricing Via Actor-Critic Information-Directed Pricing, submitted [Arxiv]
Preference Matching
Yuantong Li, Chi-hua Wang, Guang Cheng, Will Wei Sun, Rate-optimal contextual online matching bandit, submitted. [Arxiv]
Online Decision Making Algorithm Design
High-dimensional Bandit Algorithm Design
Chi-Hua Wang, Zhanyu Wang, Will Wei Sun & Guang Cheng, Online Regularization toward Always-Valid High-Dimensional Dynamic Pricing. [Journal of the American Statistical Association -- T&M (2023)][Arxiv]
Chi-Hua Wang, Wenjie Li, Guang Lin, Federated High-Dimensional Online Decision Making, [TMLR2023][Arxiv]
Chi-Hua Wang, Guang Cheng, Online Batch Decision-Making with High-Dimensional Covariates [AISTAT2020][Arxiv]
Bootstrap Exploration for Bandit Algorithm Design
Shuang Wu, Chi-Hua Wang, Yuantong Li, Guang Cheng, Residual Bootstrap Exploration for Stochastic Linear Bandit. [UAI2022][Arixv]
Chi-Hua Wang, Yang Yu, Botao Hao, Guang Cheng, Residual Bootstrap Exploration for Bandit Algorithms, submitted. [Arxiv]