Expired50% confidenceOpinionExact time
Vector retrieval is inherently weak at multi-hop reasoning; when an answer requires synthesizing scattered information fragments from multiple documents, pure similarity ranking often fails to retrieve all necessary context.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Andrew Ng's New Course: A Complete Guide to Enhancing RAG with Knowledge Graphs
bilibili吴恩达Agentic6/11/2026
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