Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2483
This diff changes the following:
1. all search functions now take a `SearchParameters` argument that overrides the internal search parameters
2. the default implementation for most classes throws when the params argument is non-nullptr / non-None
3. the IndexIVF and IndexHNSW classes have functioning SearchPArameters
4. the SearchParameters includes an IDSelector that can search only in a subset of the index based on a defined subset of ids
There is also some refactoring: the IDSelector was moved to its own .h/.cpp and python/__init__.py is spit in parts.
The diff is quite bulky because the search function prototypes need to be changed in all index classes.
Things to fix in subsequent diffs:
- support SearchParameters for more index types (Flat variants)
- better sub-object ownership for SearchParams (with std::unique_ptr?)
- special handling of IDSelectorRange to make it faster
Reviewed By: alexanderguzhva
Differential Revision: D39852589
fbshipit-source-id: 4988bdb5b9bee1207cd327d3f80bf5e0e2467fe1
dd814b5f14