math

package

v1.0.4 Latest Latest Go to latest Published: Mar 12, 2026 License: MIT Imports: 2 Imported by: 0

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Valid go.mod file
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Repository

github.com/adnilis/x-hmsw

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Documentation ¶

Index ¶

func CosineDistance(a, b []float32) float32
func CosineSimilarity(a, b []float32) float32
func InnerProductDistance(a, b []float32) float32
func InnerProductDistanceNormalized(a, b []float32) float32
func L2Distance(a, b []float32) float32
func L2Squared(a, b []float32) float32
func Normalize(a []float32) []float32
type DistanceFunc
type VectorOps
- func NewVectorOps() *VectorOps

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CosineDistance ¶

func CosineDistance(a, b []float32) float32

CosineDistance 余弦距离 (1 - 相似度)

func CosineSimilarity ¶

func CosineSimilarity(a, b []float32) float32

CosineSimilarity 余弦相似度

func InnerProductDistance ¶

func InnerProductDistance(a, b []float32) float32

InnerProductDistance 内积距离 (负内积)

func InnerProductDistanceNormalized ¶

func InnerProductDistanceNormalized(a, b []float32) float32

InnerProductDistanceNormalized 预归一化向量的内积距离假设向量已经归一化，直接计算内积即可得到余弦相似度距离 = 1 - 内积

func L2Distance ¶

func L2Distance(a, b []float32) float32

L2Distance 欧几里得距离

func L2Squared ¶

func L2Squared(a, b []float32) float32

L2Squared L2 距离的平方（不计算平方根，更快）

func Normalize ¶

func Normalize(a []float32) []float32

Normalize 归一化向量

Types ¶

type DistanceFunc ¶

type DistanceFunc func(a, b []float32) float32

DistanceFunc 距离函数类型

type VectorOps ¶

type VectorOps struct {
	// contains filtered or unexported fields
}

VectorOps SIMD 优化的向量运算

func NewVectorOps ¶

func NewVectorOps() *VectorOps

NewVectorOps 创建向量运算器

func (*VectorOps) Add ¶

func (vo *VectorOps) Add(a, b []float32) []float32

Add 向量加法

func (*VectorOps) Div ¶

func (vo *VectorOps) Div(a, b []float32) []float32

Div 向量除法

func (*VectorOps) Dot ¶

func (vo *VectorOps) Dot(a, b []float32) float32

Dot 点积

func (*VectorOps) Mul ¶

func (vo *VectorOps) Mul(a, b []float32) []float32

Mul 向量乘法

func (*VectorOps) Norm ¶

func (vo *VectorOps) Norm(a []float32) float32

Norm 向量范数

func (*VectorOps) Normalize ¶

func (vo *VectorOps) Normalize(a []float32) []float32

Normalize 归一化

func (*VectorOps) Sub ¶

func (vo *VectorOps) Sub(a, b []float32) []float32

Sub 向量减法

Source Files ¶

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