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37 lines
712 B
Go
37 lines
712 B
Go
package pairwise
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import (
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"testing"
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. "github.com/smartystreets/goconvey/convey"
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"gonum.org/v1/gonum/mat"
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)
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func TestCosine(t *testing.T) {
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var vectorX, vectorY *mat.Dense
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cosine := NewCosine()
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Convey("Given two vectors", t, func() {
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vectorX = mat.NewDense(3, 1, []float64{1, 2, 3})
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vectorY = mat.NewDense(3, 1, []float64{2, 4, 6})
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Convey("When doing inner Dot", func() {
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result := cosine.Dot(vectorX, vectorY)
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Convey("The result should be 25", func() {
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So(result, ShouldEqual, 28)
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})
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})
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Convey("When calculating distance", func() {
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result := cosine.Distance(vectorX, vectorY)
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Convey("The result should be 0", func() {
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So(result, ShouldEqual, 0)
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})
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})
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})
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}
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