Unverified50% confidenceDecision RuleExact time
Filter fields must be extracted at the indexing stage; adding them afterwards often requires rebuilding the entire index
1
Sources
50%
Confidence
Long-term
Relevance
10/13/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedIn 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at the document indexing stage and then filtering by metadata, the permission snapshot in the index may already be outdated once permissions are updated in the source system.68% similarUnverifiedPost-filtering (retrieve first, then filter) may result in insufficient recall when filter conditions are strict, while pre-filtering (filter first, then retrieve) may disrupt index structures and reduce retrieval efficiency.67% similarUnverifiedAfter permission changes, an incremental index rebuild needs to be triggered, otherwise the old permissions will persist along with the vectors.67% similarUnverifiedMetadata filtering comes in two forms: pre-filtering, which uses structured fields to narrow the candidate set before vector computation for higher precision; and post-filtering, which recalls the Top-K results first and then filters them out—simpler to implement but potentially leaving insufficient usable results.66% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1019568API
curl https://kongchang.com/api/v1/knowledge/claims/1019568MCP
get_claim(id=1019568)