benwtrent opened a new issue, #13614:
URL: https://github.com/apache/lucene/issues/13614
### Description
just with some default settings, `glove-200` does poorly with `int4` HNSW.
Some experiments I have done:
### Dynamic confidence interval:
- Floats used to build the graph (e.g. when buffer is large enough):
`0.693` (I regrettably didn't get the quantiles here...)
- When `int4` vectors are used `0.189` (minQuantile=-1.2686034,
maxQuantile=1.3250866)
### 0.5 confidence interval (locally patched to allow it):
- `int4` vectors building the graph `0.649` (minQuantile=-0.277436,
maxQuantile=0.29298353)
### 0.75 confidence interval (locally patched to allow it):
- `int4` vectors building the graph ...:loading:
### 0.9 confidence interval:
- `int4`
### 1.0 confidence interval:
- `int4`
### Version and environment details
_No response_
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