Knowledge Graphs & GraphRAG: sections and modules
Hierarchical & Memory-Augmented Retrieval
Build a recursive tree of abstractive summaries (RAPTOR) and retrieve across its levels.
- Lessons
- 5 lessons
- By
- Sourav Banerjee
- Prerequisites
- None
Lessons
Start modulePractise and Check
- Deliverable
- Global-question test: ask ten 'summarise / compare across the whole corpus' questions and compare flat RAG, RAPTOR and LightRAG.
- Assessment
- Answer the five Interview questions without notes, then run the lab.
- Interview probe
- Larkspur's assistant says cancelled accounts lose data immediately, although the source passage describes a retention window. The retrieved summary omits that window. How do you debug it?
- Common mistakes
- Quoting a condition from a summary without checking its source passages
- Updating the source index but not the memory entries derived from it
- Removing a withdrawn passage without recomputing the merged graph profiles
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