org.apache.mahout.cf.taste.hadoop
Class TasteHadoopUtils

java.lang.Object
  org.apache.mahout.cf.taste.hadoop.TasteHadoopUtils

public final class TasteHadoopUtils
extends Object

Some helper methods for the hadoop-related stuff in org.apache.mahout.cf.taste

Method Summary

static int	idToIndex(long id) Maps a long to an int
static org.apache.mahout.math.map.OpenIntLongHashMap	readItemIDIndexMap(String itemIDIndexPathStr, org.apache.hadoop.conf.Configuration conf) Reads a binary mapping file
static String[]	splitPrefTokens(CharSequence line) Splits a preference data line into string tokens

Methods inherited from class java.lang.Object

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

Method Detail

splitPrefTokens

public static String[] splitPrefTokens(CharSequence line)

Splits a preference data line into string tokens

idToIndex

public static int idToIndex(long id)

Maps a long to an int

readItemIDIndexMap

public static org.apache.mahout.math.map.OpenIntLongHashMap readItemIDIndexMap(String itemIDIndexPathStr,
                                                                               org.apache.hadoop.conf.Configuration conf)

Reads a binary mapping file