6 papers
Quantifying the Energy Floor: Direct Measurement and Replay Buffer Bias in SAC-Based HVAC Control on sbsim
Bo Li, Chen Zhang
We quantify the energy floor -- the minimum achievable cost given action space constraints -- for Soft Actor-Critic (SAC) HVAC control on the sbsim calibrated building simulator. T…
TravelEval: A Comprehensive Benchmarking Framework for Evaluating LLM-Powered Travel Planning Agents
Weiyi Chen, Shuaixiong Wang, Ziyun Gao +5
The development of Large Language Models (LLMs) has significantly improved travel planning applications, yet evaluating such models is limited by existing benchmarks' limitations:…
Higher-order Network Analysis of Human Mobility Data
Timothy LaRock, Chen Zhang, Jürgen Hackl
The detailed study of individual human mobility requires large-scale high-resolution datasets, but collecting such datasets in a way that is both statistically powerful and privacy…
Rethinking the Sioux Falls Network: Insights from Path-Driven Higher-Order Network Analysis
Chen Zhang, Timothy LaRock, Alben Rome Bagabaldo +1
Benchmark scenarios are widely used in transportation research to evaluate routing algorithms, simulate infrastructure interventions, and test new technologies under controlled con…
Beyond Connectivity: Higher-Order Network Framework for Capturing Memory-Driven Mobility Dynamics
Chen Zhang, Jürgen Hackl
Understanding and predicting mobility dynamics in transportation networks is critical for infrastructure planning, resilience analysis, and traffic management. Traditional graph-ba…
A Simulation Framework for Ride-Hailing with Electric Vehicles
Chen Zhang, Sushil Varma
This research presents a Python-based simulation framework designed to model electric vehicle (EV) on-demand transportation systems, with a focus on optimizing urban fleet operatio…