matlab自带knnclssify小实验

an for the object of samplify, i only choose 3 classes while  2 samples  for each class ,there are 18 features in every sample . 

train_data=load('E:\sample_feature.txt');
train_label=load('E:\train_label.txt');
test_data=load('E:\features.txt');
k=knnclassify(test_data,train_data,train_label,3,'cosine','random');

the train_label is like this :

1
1
2
2
3
3

and the classified result is :

k =

     3
     3
     3
     3
     2
     3
     3
     1
     3
     3
     3
     2
     2
     3
     1
     3
     3
     3
     3
     3
     3
     3
     3
     3
     3
     3
     3
     3
     3
     1
     3
     3
     3
     3
     3
     3
     3
     3
     3
     3
     2
     3
     3
     1
     3
     3
     3
     1
     3
     1
     3
     3
     1
     3
     1
     2
     3
     3
     3
     1
     2
     1
     3
     2
     1
     3
     2
     1
     3
     2
     2
     3