AI & MLRecommendedAIML-RET-009
Approximate Nearest Neighbor Indexes
Graph and partition indexes (HNSW, IVF, product quantisation) that trade exactness for speed at scale.
- Difficulty
- 3 / 5
- Importance
- 4 / 5
- Study time
- 1–2 h
- Kind of work
- Mixed
Why it matters
The learner can vary an index's search breadth and explain the recall-latency trade-off it controls.