function?[label_test]?=?knn（k?data_train?label_train?data_test）
%?knn?-?k?nearest?neighbours?classifier

error（nargchk（44nargin））;

dist?=?l2_distance（data_train?data_test）;
[sorted_dist?nearest]?=?sort（dist）;
nearest?=?nearest（1:k:）;
label_test?=?label_train（nearest）;

%?note?this?only?works?for?binary?labels
label_test?=?mean（label_test1）?>=?0.5;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????目錄??????????0??2007-05-24?21:12??knn_demo

?????文件????????359??2004-09-27?23:14??knn_demo\knn.m

?????文件???????1816??2005-09-28?05:41??knn_demo\knn_test.m

?????文件????????412??2005-09-28?05:45??knn_demo\l2_distance.m

?????文件????????345??2004-09-27?23:14??knn_demo\plot_test.m

?????文件????????227??2004-09-27?23:12??knn_demo\plot_train.m

-----------?---------??----------?-----??----

?????????????????3377????????????????????7