Research

One scientific explainer per retrieval mechanism. Each follows the same honest arc, the problem the paper solves, the reference implementation it cites, the deterministic way brain-server implements it, and the ceiling (built from published research, not SOTA-parity claims).

• Bi-temporal Knowledge Graph, validity-aware facts, ?at= recall
• Submodular Evidence Packing, token-budgeted, diverse evidence
• TRACE Typed Edges + Faithful Explanation Paths
• Personalized PageRank Graph Retrieval, HippoRAG-2-style
• Noise-Aware Graph + Hub Dampening, the Discern release
• Calibrated Abstention + Faithful Span Verification
• The PRF Gate + Evidence-Faithful Snippet, grounding the answer
• Hybrid Fusion: RRF over BM25 + quantized vectors, Cormack & Clarke RRF, Robertson & Zaragoza BM25, Jégou quantization
• Opt-in Anticipation (the Suggest surface), Generative Agents / MemGPT / Mem0, honestly bounded
• Structure-Aware Markdown Chunking, CommonMark split, Lewis 2020 RAG framing
• Centroid Domain Auto-Routing, the nearest-centroid classifier, carving the store by domain
• Deterministic Consolidation, record-linkage duplicates/conflicts/stale-source sweep, reviewable not autonomous
• The Memory-Benchmark Landscape 2026, LoCoMo / LongMemEval / BEAM, contested self-reported scores, and the reproducibility answer
• The Governed Diagnostic Loop, law-cited phases, clinical process shape, local calibrated judgment, retrospective corpus
• UI Contract Parity, one invisible-class fixture across five consumers, byte-equality wire drift gate
• Durable Local-First State, Argon2id + AES-256-GCM parameters, the WAL durability envelope, and physical erasure ordering
• The Two-Layer Injection Screen, mechanical tiers, a local classifier, quarantine as the usable middle state, and honest degradation
• The Cited Work, every source behind these mechanisms, summarized and linked
• The Standards Register, every framework and regulation cited, verified against the issuing body

Every mechanism is a deterministic implementation of specific published techniques over a local store, no LLM in the retrieval loop, no data egress. The 2026 survey wave (arXiv:2512.13564, 2603.07670, 2605.06716, 2602.06052) taxonomizes exactly this design space; the graph-memory direction this repo ships (04/05) is institutionalized by arXiv:2602.05665, and the deterministic conflict-resolution posture (01/12) is independently argued for by Memanto (arXiv:2606.01435). Every external source cited across these notes is gathered, summarized, and linked in The Cited Work. A full method-by-method audit is maintained in the project’s research records. The proof map ties each to a shipped release and a live curl/brain verification.