jtibshirani commented on PR #872:
URL: https://github.com/apache/lucene/pull/872#issuecomment-1120061467
@mayya-sharipova what is the ann-benchmarks set-up that you're using? I
found that in order to get comparable results to hnswlib, I had to make sure to
adjust `efSearch` to these parameters:
```
run-groups:
M-4:
arg-groups:
- {"M": 32, "efConstruction": 100}
query-args: [[1000, 0, 40, 70, 90, 490, 790, 990]]
```
First, there is a warm-up run that we throw away. Then we subtract 10 from
the other `efSearch` since `KnnGraphTester` adds `k=10` to this value:
```
private static TopDocs doKnnVectorQuery(
IndexSearcher searcher, String field, float[] vector, int k, int
fanout) throws IOException {
return searcher.search(new KnnVectorQuery(field, vector, k + fanout), k);
}
```
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