How to get the nearest neighbor in weka using java

java algorithm machine-learning weka nearest-neighbor
kamikaze_pilot picture kamikaze_pilot · Jul 2, 2011 · Viewed 7.2k times · Source

I've been trying to use the Ibk nearest neighbor algorithm that goes together with the weka machine learning library.

I know how to classify instances, but I want to implement the collaborative filtering feature so I need to actually get the list of actual objects that are nearest to the object of interest.

How would I actually do so in weka using its java API?

Answer

iinception picture iinception · Jul 5, 2011

How about this one 

weka.core.neighboursearch.LinearNNSearch knn = new LinearNNSearch(
            trainingInstances);
//do other stuff

Instances nearestInstances= knn.kNearestNeighbours(target, 3)

Here is the API documentation that you can refer to.

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