Faiss

- Main Page
- Namespaces
- Classes
- Files

- Class List
- Class Index
- Class Hierarchy
- Class Members

All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends
Public Member Functions | Public Attributes | List of all members
faiss::IndexBinaryFromFloat Struct Reference

`#include <IndexBinaryFromFloat.h>`

Inheritance diagram for faiss::IndexBinaryFromFloat:

## Public Member Functions
| IndexBinaryFromFloat (Index *index)
void | add (idx_t n, const uint8_t *x) override
void | reset () override
| Removes all elements from the database.
void | search (idx_t n, const uint8_t *x, idx_t k, int32_t *distances, idx_t *labels) const override
void | train (idx_t n, const uint8_t *x) override
Public Member Functions inherited from faiss::IndexBinary
| IndexBinary (idx_t d=0, MetricType metric=METRIC_L2)
virtual void | add_with_ids (idx_t n, const uint8_t *x, const long *xids)
virtual void | range_search (idx_t n, const uint8_t *x, int radius, RangeSearchResult *result) const
void | assign (idx_t n, const uint8_t *x, idx_t *labels, idx_t k=1)
virtual long | remove_ids (const IDSelector &sel)
virtual void | reconstruct (idx_t key, uint8_t *recons) const
virtual void | reconstruct_n (idx_t i0, idx_t ni, uint8_t *recons) const
virtual void | search_and_reconstruct (idx_t n, const uint8_t *x, idx_t k, int32_t *distances, idx_t *labels, uint8_t *recons) const
void | display () const

## Public Attributes
Index * | index = nullptr
bool | own_fields = false
| Whether object owns the index pointer.
Public Attributes inherited from faiss::IndexBinary
int | d
| vector dimension
int | code_size
| number of bytes per vector ( = d / 8 )
idx_t | ntotal
| total nb of indexed vectors
bool | verbose
| verbosity level
bool | is_trained
| set if the Index does not require training, or if training is done already
MetricType | metric_type
| type of metric this index uses for search

## Additional Inherited Members
Public Types inherited from faiss::IndexBinary
typedef long | idx_t
| all indices are this type

## Detailed Description

IndexBinary backed by a float Index.

Supports adding vertices and searching them.

All queries are symmetric because there is no distinction between codes and vectors.

Definition at line 29 of file IndexBinaryFromFloat.h.

## Member Function Documentation

void faiss::IndexBinaryFromFloat::add | ( | idx_t | n,
|  | const uint8_t * | x
| ) |  |
| override virtual

Add n vectors of dimension d to the index.

Vectors are implicitly assigned labels ntotal .. ntotal + n - 1

Parameters

  x | input matrix, size n * d / 8

Implements faiss::IndexBinary.

Definition at line 35 of file IndexBinaryFromFloat.cpp.

void faiss::IndexBinaryFromFloat::search | ( | idx_t | n,
|  | const uint8_t * | x,
|  | idx_t | k,
|  | int32_t * | distances,
|  | idx_t * | labels
| ) |  | const
| override virtual

Query n vectors of dimension d to the index.

return at most k vectors. If there are not enough results for a query, the result array is padded with -1s.

Parameters

  x | input vectors to search, size n * d / 8
  labels | output labels of the NNs, size n*k
  distances | output pairwise distances, size n*k

Implements faiss::IndexBinary.

Definition at line 53 of file IndexBinaryFromFloat.cpp.

void faiss::IndexBinaryFromFloat::train | ( | idx_t | n,
|  | const uint8_t * | x
| ) |  |
| override virtual

Perform training on a representative set of vectors.

Parameters

  n | nb of training vectors
  x | training vecors, size n * d / 8

Reimplemented from faiss::IndexBinary.

Definition at line 70 of file IndexBinaryFromFloat.cpp.

The documentation for this struct was generated from the following files:

- /tmp/faiss/IndexBinaryFromFloat.h
- /tmp/faiss/IndexBinaryFromFloat.cpp