3 papers
cs.LG2026
FlagGAM: Rule-Basis Generalized Additive Models for Explainable Tabular Prediction
Zijie Zhao, Roy E. Welsch
Tabular applications often require inspectable prediction rules and stable behavior when records are incomplete. We propose FlagGAM, a rule-basis framework that separates feature-l…
cs.CL2026
Point-in-Time Financial RAG with Frozen LLMs and Market-Feedback Adaptive Retrieval
Zijie Zhao, Roy E. Welsch
Financial retrieval-augmented generation (RAG) systems typically rank evidence by textual relevance, but in financial markets evidence utility depends on event type, forecast horiz…
q-fin.TR2026
Hierarchical Reinforced Trader (HRT): A Bi-Level Approach for Optimizing Stock Selection and Execution
Zijie Zhao, Roy E. Welsch
Automated equity trading requires converting noisy market and news signals into executable portfolio decisions under risk, turnover, and transaction costs. We propose Hierarchical…