elasticsearch-js/docs/reference/api/KnnQuery.md

Interface KnnQuery

Name	Type	Description
field	Field	The name of the vector field to search against
filter	QueryDslQueryContainer	QueryDslQueryContainer[]
k	integer	The final number of nearest neighbors to return as top hits
num_candidates	integer	The number of nearest neighbor candidates to consider per shard
query_vector_builder	QueryVectorBuilder	The query vector builder. You must provide a query_vector_builder or query_vector, but not both.
query_vector	QueryVector	The query vector
rescore_vector	RescoreVector	Apply oversampling and rescoring to quantized vectors
similarity	float	The minimum similarity for a vector to be considered a match