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K nearest neighbor search 1.0
File ID: 81170






K nearest neighbor search 1.0
Download K nearest neighbor search 1.0http://www.mathworks.comReport Error Link
License: Shareware
File Size: 10.0 KB
Downloads: 346
User Rating:3 Stars  (1 rating)
Submit Rating:
K nearest neighbor search 1.0 Description
Description: This is just a brute force implementation of k nearest neighbor search without using any fancy data structure, such as kd-tree. However it is the fastest knn matlab implementation I can find.

A partial sort mex function is implemented which is a simple wrapper of c++ partial_sort.

Provided the sort function, the matlab code is only of two lines. However, it is extremely fast.

install:
build;

usage:
[distance, index] = knn(query,data,k);

example:
X=rand(200,2000);Y=rand(200,5000);
tic;[D,N]=knn(X,Y,50);toc

License: Shareware

Related: provided, Lines, extremely, partial sort, c2b2b, Simple, Wrapper, Install, Build

O/S:BSD, Linux, Solaris, Mac OS X

File Size: 10.0 KB

Downloads: 346



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