Hierarchical Clustering Speeds Up Multi-Vector Retrieval
amaarora · x · 2026-07-19
This post discusses the acceleration of multi-vector model retrieval. The main argument is that combining hierarchical clustering with pooling could offer a "free lunch" style speedup.
The author reposts, noting that two papers are exploring a similar direction:
- Using hierarchical clustering for embedding pooling in multi-vector retrieval;
- The goal is to accelerate retrieval while minimizing any loss in performance.
The quote also mentions an ironic observation: some people skip papers immediately if they see "hierarchical" in the title. However, this repost takes the opposite stance, arguing that such structured approaches are highly relevant and worth exploring in multi-vector retrieval.
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