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03129c9129
Split the catch-all values.go into one file per concept, each mirrored by its test: distance.go, norm.go, stats.go, product.go, centroid.go, plus the mean methods folded into mean.go and Copy/Dim/Sum into vector.go. Remove values.go, values_test.go, and values_more_test.go so functionality and tests live where developers expect them. Hoist the two 512-dimensional face embeddings shared by the distance, norm, and cosine tests into fixtures_test.go, removing the previous triplication, and decompose the monolithic TestVector into per-concept tests. Close pre-existing coverage gaps in the integer converters and the GeometricMean/HarmonicMean method wrappers, bringing the package to 100% statement coverage. Pure code movement; no behavior change.
28 lines
771 B
Go
28 lines
771 B
Go
package vector
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import "math"
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// Norm returns the vector size (magnitude),
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// see https://builtin.com/data-science/vector-norms.
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func (v Vector) Norm(pow float64) float64 {
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return Norm(v, pow)
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}
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// EuclideanNorm returns the Euclidean vector size (magnitude),
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// see https://builtin.com/data-science/vector-norms.
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func (v Vector) EuclideanNorm() float64 {
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return v.Norm(2.0)
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}
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// Norm returns the size of the vector (use pow = 2.0 for the Euclidean distance),
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// see https://builtin.com/data-science/vector-norms. Absolute values are used so
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// that odd powers (e.g. the L1 norm) stay well-defined for negative components.
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func Norm(v Vector, pow float64) float64 {
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s := 0.0
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for _, f := range v {
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s += math.Pow(math.Abs(f), pow)
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}
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return math.Pow(s, 1/pow)
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}
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