Layers of Thought: How Hierarchical Memory Supercharges LLM Agent Reasoning
TL;DR for operators An enterprise agent does not fail only because it forgets. Often, it fails because it remembers like a hoarder with a search bar. The H-MEM paper proposes a hierarchical memory system for LLM agents: Domain, Category, Memory Trace, and Episode layers, connected by positional child indices so retrieval can move from broad meaning to specific memory instead of scanning a flat pile of stored vectors.1 That sounds like software housekeeping. It is actually the main point. ...