Hi@all
We are using Solr 9.1.1, and are trying usecases with DenseVector Fields
and knnQueries in mind.
During our tests, we see the following results and are trying to figure
out what is going on:
a) We use the following main query : {!knn f=VECTOR_FIELD
topK=10}[VECTOR DATA]. We use it as a main query because we want to
apply the distance function to the document score. However, when I try
do debug and explain the search results, I am getting more than topK=10
result documents, some are marked as match = true with "within top 10",
others are marked as match = false with "not in top 10". I'd expect that
only matched documents are part of the search result, but there are 20
result documents, but only 5 of them are matched. Did I miss something?
b) The knn query results are the approximate nearest neighbors, but they
might not be the best. We'd like to define some kind of cut-off value
for knn document scores. Is this possible, and what would be a good day
to do so? Implement a post-processing filter query with an frange on the
score field?
Thank you all,
Mirko
