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Author

Zi-Han Wang

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#artificial intelligence Review Oct 2026

AgentPersonaBench: Benchmarking Persona-Driven User Simulation

We introduce AgentPersonaBench (APB), a benchmark evaluating whether persona conditioning faithfully steers downstream agent behavior. While language models are increasingly deployed for persona-driven user simulation, existing benchmarks primarily evaluate conversational styling or self-reports rather than authentic b...

Jin-Tao Huang, Yi-Fan Wang, Hong-Yuan Shen et al. · 0 citations
#machine learning Preprint Sep 2026

From Connectivity to Rewards: Dense Reward Learning with Directed State Graphs

The integration of graphs with Goal-Conditioned Hierarchical Reinforcement Learning (GCHRL) has received increasing attention, as graphs naturally encode task hierarchies for effective subgoal sampling. However, existing methods often overlook intrinsic connectivity information, failing to fully leverage the underlying...

Shuyuan Zhang, Zi-Han Wang, Xiao-Wen Chang et al. · 0 citations
#natural language process... Preprint Aug 2026

SIC-Agents: Benchmarking and Building an Adaptive Simulator for Pediatric Serious Illness Communication Training

This work introduces the first benchmark suite and simulation framework tailored to pediatric SIC training, and proposes SIC-Agents, a self-improving framework that generates a clinician-editable skill document to guide simulator behavior.

Zi-Han Wang, A. Slominska, Rennie Bimman et al. · 0 citations

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