Skip to content

KNN ALGORITHM #2484

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
dermimalika wants to merge 1 commit into from
Closed

KNN ALGORITHM #2484

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
43 changes: 43 additions & 0 deletions KNN.java
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,43 @@
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;

import weka.classifiers.Classifier;
import weka.classifiers.lazy.IBk;
import weka.core.Instance;
import weka.core.Instances;

public class KNN {
public static BufferedReader readDataFile(String filename) {
BufferedReader inputReader = null;

try {
inputReader = new BufferedReader(new FileReader(filename));
} catch (FileNotFoundException ex) {
System.err.println("File not found: " + filename);
}

return inputReader;
}

public static void main(String[] args) throws Exception {
BufferedReader datafile = readDataFile("data.txt");

Instances data = new Instances(datafile);
data.setClassIndex(data.numAttributes() - 1);

//do not use first and second
Instance first = data.instance(0);
Instance second = data.instance(1);
data.delete(0);
data.delete(1);

Classifier ibk = new IBk();
ibk.buildClassifier(data);

double class1 = ibk.classifyInstance(first);
double class2 = ibk.classifyInstance(second);

System.out.println("first: " + class1 + "\nsecond: " + class2);
}
}