Weekend Challenge · Week 4
Beat the Baseline
This week has a hard, numeric win condition: your hybrid pipeline must beat BOTH pure BM25 and pure vector search on your own metrics. No participation trophies.
Your mission
- Assemble hybrid retrieval with RRF; measure it
- Add cross-encoder reranking; measure the lift separately
- If hybrid does NOT beat both parents, diagnose why and fix it — that's the real exercise
Deliverable
A staged results table (BM25 / vector / hybrid / hybrid+rerank) with your analysis, committed.
Stretch goal
Sweep the RRF k parameter and the rerank depth (top-10/20/50). Chart quality vs. latency and pick your production operating point.