Shihao Li

Fake Reviewer Group Detection in Online Review Systems

2021 · arXiv (Cornell University)

Online review systems are important components in influencing customers' purchase decisions. To manipulate a product's reputation, many stores hire large numbers of people to produce fake reviews to mislead customers. Previous methods tackle this problem …

Smart Predict-Then-Control: Control-Aware Surrogate Refinement for System Identification

2025 · arXiv (Cornell University)

This paper introduces Smart Predict Then Control (SPC), a control aware refinement procedure for model based control. SPC refines a prediction oriented model by optimizing a surrogate objective that evaluates candidate models through the control …