3 papers
cs.LG2026
Learning Shortest Paths When Data is Scarce
Dmytro Matsypura, Yu Pan, Hanzhao Wang
Digital twins and other simulators are increasingly used to support routing decisions in large-scale networks. However, simulator outputs often exhibit systematic bias, while groun…
cs.SE2025
Online-Optimized RAG for Tool Use and Function Calling
Yu Pan, Xiaocheng Li, Hanzhao Wang
In many applications, retrieval-augmented generation (RAG) drives tool use and function calling by embedding the (user) queries and matching them to pre-specified tool/function des…
cs.LG2025
OMGPT: A Sequence Modeling Framework for Data-driven Operational Decision Making
Hanzhao Wang, Guanting Chen, Kalyan Talluri +1
We build a Generative Pre-trained Transformer (GPT) model from scratch to solve sequential decision making tasks arising in contexts of operations research and management science w…