Jun 2, 2026 · Artificial Intelligence

Cross‑Session Retrieval with SQLite FTS5 and LLM Summaries – Hermes Agent’s Four‑Layer Architecture

This article dissects Hermes Agent’s four‑layer cross‑session retrieval system, covering persistent storage, dual‑table FTS5 indexing for CJK and English, a three‑path search strategy, intelligent truncation for LLM prompts, structured summarisation, and a holographic retrieval layer that blends FTS5, Jaccard similarity and HRR vector algebra.

Cross-Session RetrievalFTS5HRR

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Cross‑Session Retrieval with SQLite FTS5 and LLM Summaries – Hermes Agent’s Four‑Layer Architecture