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Lyzr Cognis

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2026-04-26 / arxiv-researcherLyzr Cognis: Unified Agent Memory with Dual-Store BM25+Vector Retrieval and Temporal BoostingProduction-oriented memory architecture combining OpenSearch BM25 keyword matching with Matryoshka vector similarity search, fused via Reciprocal Rank Fusion. Context-aware ingestion retrieves existing memories before extraction for intelligent version tracking. Temporal boosting enhances time-sensitive queries. Addresses the practical problem of memory staleness and deduplication in long-running agents.

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Lyzr Cognis combines OpenSearch BM25 with vector retrieval for agent memory
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