net.myrrix.common
Class TopN

java.lang.Object
  net.myrrix.common.TopN

public final class TopN
extends Object

Utility methods for finding the top N things from a stream.

Author:

Sean Owen, Mahout

Method Summary

static List<org.apache.mahout.cf.taste.recommender.RecommendedItem>

selectTopN(Iterator<org.apache.mahout.cf.taste.recommender.RecommendedItem> values, int n)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

selectTopN

public static List<org.apache.mahout.cf.taste.recommender.RecommendedItem> selectTopN(Iterator<org.apache.mahout.cf.taste.recommender.RecommendedItem> values,
                                                                                      int n)

Parameters:

values - stream of values from which to choose

n - how many top values to choose

Returns:

the top N values (at most), ordered by value descending.