Comment by refulgentis
18 days ago
FWIW, you might be doing it / ruled it out already:
- BM25 to eliminate the 0 results in source data problem
- Longer term, a peek at Gwern's recent hierarchical embedding article. Got decent early returns even with fixed size chunks
Much appreciated.
For others interested in BM25 for the use case above, I found this thread informative.
https://news.ycombinator.com/item?id=41034297
Agree, BM25 honestly does an amazing job on its own sometimes, especially if content is technical.
We use it in combination with semantic but sometimes turn off the semantic part to see what happens and are surprised with the robustness of the results.
This would work less well for cross-language or less technical content, however. It's great for acronyms, company or industry specific terms, project names, people, technical phrases, and so on.