Zhi Chen

Model-based Performance Evaluation of a Moving Target Defense System

2020

Moving target defense (MTD), emerging as a game-changer in the cyber defense area, has got a lot of attention and development recently. As a proactive defense technique, MTD dynamically changes system attributes in order to …

GSMFlow: Generation Shifts Mitigating Flow for Generalized Zero-Shot Learning

2022 · IEEE Transactions on Multimedia

Generalized Zero-Shot Learning (GZSL) aims to recognize images not only for seen classes but also for unseen ones by transferring semantic-visual relationships from the seen to the unseen classes. It is an intuitive solution to …

Missing Values and Imputation in Healthcare Data: Can Interpretable Machine Learning Help?

2023 · arXiv (Cornell University)

Missing values are a fundamental problem in data science. Many datasets have missing values that must be properly handled because the way missing values are treated can have large impact on the resulting machine learning …

Exploring Schema Generalizability of Text-to-SQL

2023

Exploring the generalizability of a text-to-SQL parser is essential for a system to automatically adapt the real-world databases. Previous investigation works mostly focus on lexical diversity, including the influence of the synonym and perturbations in …