26 lines
517 B
Go
26 lines
517 B
Go
package stats
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import "math"
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// SoftMax returns the input values in the range of 0 to 1
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// with sum of all the probabilities being equal to one. It
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// is commonly used in machine learning neural networks.
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func SoftMax(input Float64Data) ([]float64, error) {
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if input.Len() == 0 {
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return Float64Data{}, EmptyInput
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}
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s := 0.0
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c, _ := Max(input)
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for _, e := range input {
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s += math.Exp(e - c)
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}
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sm := make([]float64, len(input))
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for i, v := range input {
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sm[i] = math.Exp(v-c) / s
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}
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return sm, nil
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}
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