Unverified50% confidenceCautionExact time
In the pre-indexing approach of attaching permission metadata at the document indexing stage and then filtering by metadata, the permission snapshot in the index may already be outdated once permissions are updated in the source system.
1
Sources
50%
Confidence
Long-term
Relevance
10/7/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedFailure of vector indexes to reflect data changes in a timely manner leads to two types of problems: stale retrieval (generating answers based on outdated documents) and ghost data (source documents have been deleted but vectors remain in the index and are still retrieved).70% similarUnverifiedRetrieval results from vector databases and search engines can change due to index updates and ranking algorithm adjustments.70% similarUnverifiedMetadata fields need to be explicitly declared as indexable fields at data ingestion time; otherwise, filter operations will degrade to full scans, affecting performance.69% similarUnverifiedBuilding a hash-based key lookup system in-house gains instant revocation control via "delete the record to revoke," at the cost of one additional database query latency per request.69% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/985542API
curl https://kongchang.com/api/v1/knowledge/claims/985542MCP
get_claim(id=985542)