//Computes the Euclidean distance between two vectors. func (KNN *KNNClassifier) ComputeDistance(vector *mat.DenseMatrix, testrow *mat.DenseMatrix) float64 { var sum float64 difference, err := testrow.MinusDense(vector) flat := difference.Array() if err != nil { fmt.Println(err) } for _, i := range flat { squared := math.Pow(i, 2) sum += squared } eucdistance := math.Sqrt(sum) return eucdistance }