Example usage for org.apache.mahout.cf.taste.model DataModel getNumUsersWithPreferenceFor

Introduction

In this page you can find the example usage for org.apache.mahout.cf.taste.model DataModel getNumUsersWithPreferenceFor.

Prototype

int getNumUsersWithPreferenceFor(long itemID) throws TasteException;

Source Link

Usage

From source file:org.easyrec.mahout.EasyrecInMemoryDataModelTest.java

License:Open Source License

@Test
public void testEasyrecDataModel_getNumUsersWithPreferenceFor() throws TasteException {
    DataModel easyrecDataModel = new EasyrecDataModel(TENANT_ID, RATE_ACTION_TYPE_ID, HAS_RATING_VALUES,
            mahoutDataModelMappingDAO);/*  w  ww  .ja va 2 s  .  c o m*/
    easyrecDataModel = new EasyrecInMemoryDataModel(easyrecDataModel);

    int numberUsersWithPreference = easyrecDataModel.getNumUsersWithPreferenceFor(1);

    assertEquals(2, numberUsersWithPreference);
}

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