Patterns
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Multi-Source Context Fusion(MSCF)

Intelligently combines contextual information from multiple sources with quality weighting and conflict resolution

Complexity: highPattern

Core Mechanism

Fuses context from multiple heterogeneous sources (indexes, APIs, databases, agents) into a unified, high-quality evidence set using source-quality scoring, alignment/entity resolution, conflict resolution, and provenance‑aware packing—so generation is grounded in the most relevant, timely, and authoritative information.

Workflow / Steps

  1. Register sources and capabilities: indexes, APIs, tools, agent endpoints; define schemas and access policies.
  2. Retrieve/ingest per source with hybrid search or tool calls; capture metadata (recency, authority, permissions).
  3. Normalize + canonicalize: deduplicate near‑duplicates; unify schemas; perform entity resolution and ID mapping.
  4. Score candidates: relevance, recency, authority, consistency, and coverage; calibrate per‑source weights.
  5. Align + reconcile: map entities/claims across sources; detect contradictions and temporal ordering.
  6. Fuse results: use late/ensemble fusion (e.g., Reciprocal Rank Fusion) or learned aggregators with confidence weights.
  7. Resolve conflicts: apply policies (temporal precedence, source authority, majority/consensus, abstain/defer).
  8. Assemble context: compress and pack with citations, timestamps, and source attributions within token budgets.
  9. Generate + verify: produce answer; check faithfulness/groundedness; iterate if confidence or coverage is low.
  10. Log + evaluate: record per‑source contribution, costs, latency; run ablations to quantify fusion gains.

Best Practices

Use hybrid retrieval (lexical + dense) per source; apply strong reranking and late fusion (e.g., RRF).
Calibrate source weights with offline labels; incorporate dynamic signals (recency, authority, coverage).
Perform aggressive deduplication and entity resolution to avoid double‑counting repeated facts.
Enforce provenance: include citations, timestamps, and versioning; prefer authoritative, up‑to‑date sources.
Reconcile temporally: prefer fresher data unless authoritative sources dictate otherwise; encode validity windows.
Budget control: per‑source quotas (top_k), total token/cost caps, and early‑exit on high confidence.
Guardrails: drop low‑quality or policy‑violating sources; honor ACLs/tenancy and data minimization.
Evaluate by ablation: measure uplift vs best single source and vs no‑fusion baseline before production rollout.

When NOT to Use

  • A single authoritative, fresh source already satisfies quality and SLOs.
  • Hard real‑time paths with tight p95 latency where fusion overhead breaks budgets.
  • Strict compliance regimes that prohibit cross‑source mixing or external augmentation.
  • Sparse or highly conflicting sources without a viable resolution policy or human review.
  • Severe cost constraints where additional sources do not measurably improve outcomes.

Common Pitfalls

  • Near‑duplicate inflation causing biased scores and repeated context.
  • Over‑weighting popularity/recency signals → drift or stale claims overriding authoritative corrections.
  • Ignoring permissions/tenancy; leaking restricted data into fused context or logs.
  • No temporal reconciliation: mixing outdated and current facts without validity windows.
  • Unbounded context packing leading to truncation and lost citations.

Key Features

Source quality weighting and dynamic scoring
Cross‑source deduplication and entity resolution
Conflict resolution policies (temporal, authority, consensus)
Temporal reasoning and freshness controls
Unified schema and provenance‑aware context packing
Per‑source contribution telemetry and confidence

KPIs / Success Metrics

  • Answer faithfulness/groundedness and citation coverage; contradiction rate.
  • Fusion gain vs best single source and vs no‑fusion baseline (quality uplift).
  • Redundancy/duplication rate after dedup; entity resolution precision/recall.
  • Recency hit rate and freshness adherence; authority agreement rate.
  • Latency p50/p95 and cost per answer; tokens packed per answer.

Token / Resource Usage

  • Late/ensemble fusion to limit packing; prefer RRF/weighted votes over concatenating large contexts.
  • Per‑source top_k and dynamic budgets; compress extractively with citations; sample by marginal gain.
  • Cache per‑source retrieval/reranks; reuse across hops and related queries.
  • Use lightweight models for scoring/evaluation; reserve strongest model for final synthesis.
  • Stream results and early‑exit when confidence and coverage meet thresholds.

Best Use Cases

  • Enterprise 360° customer view: CRM + support + analytics + communications.
  • Compliance, finance, or risk where multiple authoritative sources must agree.
  • Research synthesis combining papers, structured databases, and web sources with citations.
  • Multi‑agent systems aggregating specialist outputs into a coherent, validated summary.
  • Incident response and observability: logs + metrics + traces + tickets for rapid triage.

References & Further Reading

Patterns

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