Time-Aware Retrieval Why It Matters "What is our refund policy?" should return the current policy, not the 2019 version. Pure semantic similarity often prefers older verbose documents that match more query terms. Time awareness corrects this. Two failure modes to prevent: 1. Stale wins : old doc ranks above newer authoritative doc because it's more verbose. 2. Fresh-but-wrong : auto-generated recent doc outranks the authoritative but older source of truth. Approaches | Approach | Needs | Strength | Weakness | |---|---|---|---| | Hard time filter | Date in query | Exact scoping | Fails for vag…