blob: c088d498f0fdf1a8d8b86cb4a62e9d807a9357e8 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "distance_function_factory.h"
#include "distance_functions.h"
#include <vespa/vespalib/util/typify.h>
#include <vespa/vespalib/util/array.h>
#include <vespa/vespalib/util/arrayref.h>
#include <vespa/log/log.h>
LOG_SETUP(".searchlib.tensor.distance_function_factory");
using search::attribute::DistanceMetric;
using vespalib::eval::CellType;
using vespalib::eval::ValueType;
namespace search::tensor {
DistanceFunction::UP
make_distance_function(DistanceMetric variant, CellType cell_type)
{
switch (variant) {
case DistanceMetric::Euclidean:
switch (cell_type) {
case CellType::FLOAT: return std::make_unique<SquaredEuclideanDistanceHW<float>>();
case CellType::DOUBLE: return std::make_unique<SquaredEuclideanDistanceHW<double>>();
case CellType::INT8: return std::make_unique<SquaredEuclideanDistanceHW<vespalib::eval::Int8Float>>();
default: return std::make_unique<SquaredEuclideanDistance>(CellType::FLOAT);
}
case DistanceMetric::Angular:
switch (cell_type) {
case CellType::FLOAT: return std::make_unique<AngularDistanceHW<float>>();
case CellType::DOUBLE: return std::make_unique<AngularDistanceHW<double>>();
default: return std::make_unique<AngularDistance>(CellType::FLOAT);
}
case DistanceMetric::GeoDegrees:
return std::make_unique<GeoDegreesDistance>(CellType::DOUBLE);
case DistanceMetric::PrenormalizedAngular:
case DistanceMetric::InnerProduct:
switch (cell_type) {
case CellType::FLOAT: return std::make_unique<InnerProductDistanceHW<float>>();
case CellType::DOUBLE: return std::make_unique<InnerProductDistanceHW<double>>();
default: return std::make_unique<InnerProductDistance>(CellType::FLOAT);
}
case DistanceMetric::Hamming:
return std::make_unique<HammingDistance>(cell_type);
}
// not reached:
return DistanceFunction::UP();
}
class SimpleBoundDistanceFunction : public BoundDistanceFunction {
const vespalib::eval::TypedCells _lhs;
const DistanceFunction &_df;
public:
SimpleBoundDistanceFunction(const vespalib::eval::TypedCells& lhs,
const DistanceFunction &df)
: _lhs(lhs),
_df(df)
{}
double calc(const vespalib::eval::TypedCells& rhs) const override {
return _df.calc(_lhs, rhs);
}
double convert_threshold(double threshold) const override {
return _df.convert_threshold(threshold);
}
double to_rawscore(double distance) const override {
return _df.to_rawscore(distance);
}
double calc_with_limit(const vespalib::eval::TypedCells& rhs, double limit) const override {
return _df.calc_with_limit(_lhs, rhs, limit);
}
};
class SimpleDistanceFunctionFactory : public DistanceFunctionFactory {
DistanceFunction::UP _df;
public:
SimpleDistanceFunctionFactory(DistanceFunction::UP df)
: DistanceFunctionFactory(df->expected_cell_type()),
_df(std::move(df))
{}
BoundDistanceFunction::UP for_query_vector(const vespalib::eval::TypedCells& lhs) override {
return std::make_unique<SimpleBoundDistanceFunction>(lhs, *_df);
}
BoundDistanceFunction::UP for_insertion_vector(const vespalib::eval::TypedCells& lhs) override {
return std::make_unique<SimpleBoundDistanceFunction>(lhs, *_df);
}
};
std::unique_ptr<DistanceFunctionFactory>
make_distance_function_factory(search::attribute::DistanceMetric variant,
vespalib::eval::CellType cell_type)
{
switch (variant) {
case DistanceMetric::Angular:
switch (cell_type) {
case CellType::DOUBLE: return std::make_unique<AngularDistanceFunctionFactory<double>>();
default: return std::make_unique<AngularDistanceFunctionFactory<float>>();
}
case DistanceMetric::Euclidean:
switch (cell_type) {
case CellType::DOUBLE: return std::make_unique<EuclideanDistanceFunctionFactory<double>>();
case CellType::INT8: return std::make_unique<EuclideanDistanceFunctionFactory<vespalib::eval::Int8Float>>();
default: return std::make_unique<EuclideanDistanceFunctionFactory<float>>();
}
case DistanceMetric::InnerProduct:
case DistanceMetric::PrenormalizedAngular:
switch (cell_type) {
case CellType::DOUBLE: return std::make_unique<PrenormalizedAngularDistanceFunctionFactory<double>>();
default: return std::make_unique<PrenormalizedAngularDistanceFunctionFactory<float>>();
}
case DistanceMetric::GeoDegrees:
return std::make_unique<GeoDistanceFunctionFactory>();
case DistanceMetric::Hamming:
switch (cell_type) {
case CellType::DOUBLE: return std::make_unique<HammingDistanceFunctionFactory<double>>();
case CellType::INT8: return std::make_unique<HammingDistanceFunctionFactory<vespalib::eval::Int8Float>>();
default: return std::make_unique<HammingDistanceFunctionFactory<float>>();
}
}
// not reached:
return {};
}
}
|
