github.com/kaydxh/golang@v0.0.131/pkg/gocv/vector/vector_test.go (about)

     1  /*
     2   *Copyright (c) 2023, kaydxh
     3   *
     4   *Permission is hereby granted, free of charge, to any person obtaining a copy
     5   *of this software and associated documentation files (the "Software"), to deal
     6   *in the Software without restriction, including without limitation the rights
     7   *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   *copies of the Software, and to permit persons to whom the Software is
     9   *furnished to do so, subject to the following conditions:
    10   *
    11   *The above copyright notice and this permission notice shall be included in all
    12   *copies or substantial portions of the Software.
    13   *
    14   *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   *SOFTWARE.
    21   */
    22  
    23  package vector_test
    24  
    25  import (
    26  	"math/rand"
    27  	"testing"
    28  
    29  	"github.com/kaydxh/golang/pkg/gocv/vector"
    30  )
    31  
    32  func TestVector(t *testing.T) {
    33  	var ve vector.Vector[float32]
    34  	for i := 0; i < 1024; i++ {
    35  		ve.Append(rand.Float32())
    36  	}
    37  	t.Logf("len: %v", ve.Len())
    38  	s, err := ve.String()
    39  	if err != nil {
    40  		t.Fatalf("failed to get string, err: %v", err)
    41  	}
    42  	t.Logf("String: %v", s)
    43  
    44  	ve.Norm()
    45  	s, err = ve.String()
    46  	if err != nil {
    47  		t.Fatalf("failed to get norm string, err: %v", err)
    48  	}
    49  	t.Logf("Norm string: %v", s)
    50  }
    51  
    52  func TestCreateNormalizedVector(t *testing.T) {
    53  	dim := 1024
    54  	data := vector.CreateNormalizedVector[float32](dim)
    55  	t.Logf("data: %v", data)
    56  }
    57  
    58  func TestCosineDistance(t *testing.T) {
    59  	dim := 1024
    60  	data1 := vector.CreateNormalizedVector[float32](dim)
    61  	data2 := vector.CreateNormalizedVector[float32](dim)
    62  	v1 := vector.NewVector(data1...)
    63  	v2 := vector.NewVector(data2...)
    64  	distance := v1.CosineDistance(v2)
    65  	t.Logf("cosine distance: %v", distance)
    66  
    67  	distance = vector.CosineDistance(data1, data2)
    68  	t.Logf("cosine distance: %v", distance)
    69  }
    70  
    71  func TestEuclideanDistance(t *testing.T) {
    72  	dim := 1024
    73  	data1 := vector.CreateNormalizedVector[float32](dim)
    74  	data2 := vector.CreateNormalizedVector[float32](dim)
    75  	v1 := vector.NewVector(data1...)
    76  	v2 := vector.NewVector(data2...)
    77  	distance := v1.EuclideanDistance(v2)
    78  	t.Logf("euclidean distance: %v", distance)
    79  
    80  	distance = vector.EuclideanDistance(data1, data2)
    81  	t.Logf("euclidean distance: %v", distance)
    82  }