inquiry related to DistanceComputer about faiss HOT 2 OPEN

This is because the distance_to_code function does not have a simplified wrapping layer.
It can still be called using swig_ptr:

dist_comp = index_pq.get_FlatCodesDistanceComputer()
dist_comp.set_query(faiss.swig_ptr(x_norm[0]))
dist_comp.distance_to_code(faiss.swig_ptr(codes[:5])) 

This computes one distance at a time (because it's a low-level function).

from faiss.

Thanks for your reply.

I get the following error when executing: dist_comp.set_query(faiss.swig_ptr(x_norm[0]))

TypeError: in method 'DistanceComputer_set_query', argument 2 of type 'float const *'

I also tried the following, which does not give an error, but unsure why does it output only 0. I expected it to output 5 distances since I compare a query with 5 different encodings :

dist_comp = index_pq.get_FlatCodesDistanceComputer()
dist_comp.set_query = faiss.swig_ptr(x_norm[0])
dist_comp.distance_to_code(faiss.swig_ptr(codes[:5])) 

from faiss.