Yes :)
※ 引述《Tonnny (^~^)》之銘言：
: I try to write the knn function by myself instead of using the package.
: Thus some detailed about knn should be verified first.
: testing set:
: 5 7 3
: training set:
: Label C1 C2 C3
: A 4 8 9 sqrt( (5-4)^2 + (7-8)^2 + (3-9)^2 ) = sqrt(38)
: B 2 6 5 sqrt( (5-2)^2 + (7-6)^2 + (3-5)^2 ) = sqrt(14)
: A 6 1 7 sqrt( (5-6)^2 + (7-1)^2 + (3-7)^2 ) = sqrt(53)
: B 2 3 5 sqrt( (5-2)^2 + (7-3)^2 + (3-5)^2 ) = sqrt(29)
: Therefore, the 1-nearest neighbor is "B".
: the 3-nearest neighbor is "B". (B:14,29: vote=2 A:38: vote=1)
: Is this procedure correct?
: Thanks for answering~