org.apache.mahout.cf.taste.example.bookcrossing

Class BookCrossingDataModel

java.lang.Object

org.apache.mahout.cf.taste.impl.model.AbstractDataModel

org.apache.mahout.cf.taste.impl.model.file.FileDataModel

org.apache.mahout.cf.taste.example.bookcrossing.BookCrossingDataModel

All Implemented Interfaces:

Serializable, Refreshable, DataModel

public final class BookCrossingDataModel
extends FileDataModel

See download for data needed by this class. The BX-Book-Ratings.csv file is needed.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.mahout.cf.taste.impl.model.file.FileDataModel

DEFAULT_MIN_RELOAD_INTERVAL_MS

Constructor Summary

Constructors

Constructor and Description
BookCrossingDataModel(boolean ignoreRatings)
BookCrossingDataModel(File ratingsFile, boolean ignoreRatings)

Method Summary

Methods

Modifier and Type	Method and Description
String	toString()

Methods inherited from class org.apache.mahout.cf.taste.impl.model.file.FileDataModel

buildModel, determineDelimiter, getDataFile, getDelimiter, getItemIDs, getItemIDsFromUser, getMaxPreference, getMinPreference, getNumItems, getNumUsers, getNumUsersWithPreferenceFor, getNumUsersWithPreferenceFor, getPreferencesForItem, getPreferencesFromUser, getPreferenceTime, getPreferenceValue, getUserIDs, hasPreferenceValues, processFile, processFileWithoutID, processLine, processLineWithoutID, readItemIDFromString, readTimestampFromString, readUserIDFromString, refresh, reload, removePreference, setPreference

Methods inherited from class org.apache.mahout.cf.taste.impl.model.AbstractDataModel

setMaxPreference, setMinPreference

Methods inherited from class java.lang.Object

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

Constructor Detail

BookCrossingDataModel

public BookCrossingDataModel(boolean ignoreRatings)
                      throws IOException

Throws:

IOException

BookCrossingDataModel

public BookCrossingDataModel(File ratingsFile,
                     boolean ignoreRatings)
                      throws IOException

Parameters:

ratingsFile - BookCrossing ratings file in its native format

Throws:

IOException - if an error occurs while reading or writing files

Method Detail

toString

public String toString()

Overrides:

toString in class FileDataModel