mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 04:49:08 +08:00
109 lines
2.3 KiB
Go
109 lines
2.3 KiB
Go
// Licensed to the LF AI & Data foundation under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package index
|
|
|
|
import "strconv"
|
|
|
|
const (
|
|
ivfNlistKey = `nlist`
|
|
ivfPQMKey = `m`
|
|
ivfPQNbits = `nbits`
|
|
)
|
|
|
|
var _ Index = ivfFlatIndex{}
|
|
|
|
type ivfFlatIndex struct {
|
|
baseIndex
|
|
|
|
nlist int
|
|
}
|
|
|
|
func (idx ivfFlatIndex) Params() map[string]string {
|
|
return map[string]string{
|
|
MetricTypeKey: string(idx.metricType),
|
|
IndexTypeKey: string(IvfFlat),
|
|
ivfNlistKey: strconv.Itoa(idx.nlist),
|
|
}
|
|
}
|
|
|
|
func NewIvfFlatIndex(metricType MetricType, nlist int) Index {
|
|
return ivfFlatIndex{
|
|
baseIndex: baseIndex{
|
|
metricType: metricType,
|
|
indexType: IvfFlat,
|
|
},
|
|
|
|
nlist: nlist,
|
|
}
|
|
}
|
|
|
|
type ivfPQIndex struct {
|
|
baseIndex
|
|
|
|
nlist int
|
|
m int
|
|
nbits int
|
|
}
|
|
|
|
func (idx ivfPQIndex) Params() map[string]string {
|
|
return map[string]string{
|
|
MetricTypeKey: string(idx.metricType),
|
|
IndexTypeKey: string(IvfPQ),
|
|
ivfNlistKey: strconv.Itoa(idx.nlist),
|
|
ivfPQMKey: strconv.Itoa(idx.m),
|
|
ivfPQNbits: strconv.Itoa(idx.nbits),
|
|
}
|
|
}
|
|
|
|
func NewIvfPQIndex(metricType MetricType, nlist int, m int, nbits int) Index {
|
|
return ivfPQIndex{
|
|
baseIndex: baseIndex{
|
|
metricType: metricType,
|
|
indexType: IvfPQ,
|
|
},
|
|
|
|
nlist: nlist,
|
|
m: m,
|
|
nbits: nbits,
|
|
}
|
|
}
|
|
|
|
type ivfSQ8Index struct {
|
|
baseIndex
|
|
|
|
nlist int
|
|
}
|
|
|
|
func (idx ivfSQ8Index) Params() map[string]string {
|
|
return map[string]string{
|
|
MetricTypeKey: string(idx.metricType),
|
|
IndexTypeKey: string(IvfSQ8),
|
|
ivfNlistKey: strconv.Itoa(idx.nlist),
|
|
}
|
|
}
|
|
|
|
func NewIvfSQ8Index(metricType MetricType, nlist int) Index {
|
|
return ivfPQIndex{
|
|
baseIndex: baseIndex{
|
|
metricType: metricType,
|
|
indexType: IvfSQ8,
|
|
},
|
|
|
|
nlist: nlist,
|
|
}
|
|
}
|