Zhi-Li Tan

Action-Space Shaping for LLM Agents: Measuring and Mitigating Tool-Schema Bias

Large Language Models (LLMs) have shown strong performance on tool-use agentic tasks when given a fixed tool schema. Yet a tool schema is not the action space of an agent; it is merely one interface representation of it. The same executable action can be exposed through many different, functionally equivalent tool defi...