Examples of net.myrrix.client.translating.TranslatingRecommender

net.myrrix.client.translating.TranslatingRecommender

This is a variation on the usual {@link org.apache.mahout.cf.taste.recommender.ItemBasedRecommender}from Mahout (which uses {@code long} values to identify users and items) that instead uses {@link String}as keys. Implementations of this interface perform the same functions, but internally translate from instances of type {@link String} to {@code long} and back. In particular, {@link String}s are hashed to {@code long} values using MD5, and the reverse mapping is stored locally for a reverse translation.

To do this, the client must be aware of all item IDs that may be returned. It will receive a hashed value from the Serving Layer, and must have been initialized with {@link #addItemIDs(Iterable)} or{@link #addItemIDs(File)} first in order to perform the reverse translation. Otherwise the returned item IDswill be (string representations of) the hashed value only.

@author Sean Owen @since 1.0


    boolean translateUser = cliArgs.isTranslateUser();
    String translateFileName = cliArgs.getTranslateItem();
    boolean translateItem = translateFileName != null;


    TranslatingRecommender translatingRecommender = null;
    if (translateUser || translateItem) {
      IDMigrator userTranslator = translateUser ? new OneWayMigrator() : null;
      MemoryIDMigrator itemTranslator = translateItem ? new MemoryIDMigrator() : null;
      translatingRecommender = new TranslatingClientRecommender(recommender, userTranslator, itemTranslator);
      if (translateFileName != null && !"oneWay".equals(translateFileName)) {
        File translateFile = new File(translateFileName);
        translatingRecommender.addItemIDs(translateFile);
      }
    }


    try {
      switch (command) {

Examples of net.myrrix.client.translating.TranslatingRecommender

Related Classes of net.myrrix.client.translating.TranslatingRecommender