CORTEXA
← Browse

Zhen Zhang

3 papers indexed

arxiveess.SY2026-07-01

Reachability Analysis With Probabilistic Zonotopes: Learning Realized Disturbances and Refining Aleatory Uncertainty

Amir Modares, Zhen Zhang, Themistoklis Charalambous, Amr Alanwar, Hamidreza Modares

This paper develops a data-driven reachability framework for linear systems whose disturbances are modeled by probabilistic zonotopes (PZs), combining bounded deterministic and Gaussian stochastic components. In contrast to methods that require a precisely known disturbance model…

View free PDFSource page
arxivcs.LGcs.CE2026-07-01

Interpretable vs Learned Encoders for High-Cardinality Fraud Detection

Xiao Han, Jingjing Liu, Moxuan Zheng, Zhen Zhang, Chenyu Wu

A total of seven categorical encoding methods were tested on the IEEE-CIS fraud benchmark dataset (590,540 records, 3.5% positives, 8 high-cardinality columns). The encoders were evaluated using a stratified 5-fold cross-validation (CV) with three repetitions. Five of the encoder…

View free PDFSource page
arxivcs.CV2026-06-30Cited by 3

MAPE: Defending Against Transferable Adversarial Attacks Using Multi-Source Adversarial Perturbations Elimination

Xinlei Liu, Jichao Xie, Tao Hu, Peng Yi, Yuxiang Hu, Shumin Huo, et al.

Neural networks are vulnerable to meticulously crafted adversarial examples, leading to high-confidence misclassifications in image classification tasks. Due to their consistency with regular input patterns and the absence of reliance on the target model and its output informatio…

View free PDFSource page