Examples of GenericPreference

Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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        Collection<Preference> userPrefs = userIDPrefMap.get(userID);
        if (userPrefs == null) {
          userPrefs = new ArrayList<Preference>(2);
          userIDPrefMap.put(userID, userPrefs);
        }
        userPrefs.add(new GenericPreference(userID, movieID, rating));
      }
    }
   
    return GenericDataModel.toDataMap(userIDPrefMap, true);
  }
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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        if (!exists) {
          if (prefs == null) {
            prefs = new ArrayList<Preference>(2);
            ((FastByIDMap<Collection<Preference>>) data).put(userID, prefs);
          }
          prefs.add(new GenericPreference(userID, itemID, preferenceValue));
        }
      }
     
    }
  }
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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  }
 
  // Some overrideable methods to customize the class behavior:
 
  protected Preference buildPreference(ResultSet rs) throws SQLException {
    return new GenericPreference(getLongColumn(rs, 1), getLongColumn(rs, 2), rs.getFloat(3));
  }
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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public final class SamplingCandidateItemsStrategyTest extends TasteTestCase {

  @Test
  public void testStrategy() throws TasteException {
    List<Preference> prefsOfUser123 = new ArrayList<Preference>();
    prefsOfUser123.add(new GenericPreference(123L, 1L, 1.0f));

    List<Preference> prefsOfUser456 = new ArrayList<Preference>();
    prefsOfUser456.add(new GenericPreference(456L, 1L, 1.0f));
    prefsOfUser456.add(new GenericPreference(456L, 2L, 1.0f));

    List<Preference> prefsOfUser789 = new ArrayList<Preference>();
    prefsOfUser456.add(new GenericPreference(789L, 1L, 0.5f));
    prefsOfUser456.add(new GenericPreference(789L, 3L, 1.0f));

    FastByIDMap<PreferenceArray> userData = new FastByIDMap<PreferenceArray>();
    userData.put(123L, new GenericUserPreferenceArray(prefsOfUser123));
    userData.put(456L, new GenericUserPreferenceArray(prefsOfUser456));
    userData.put(789L, new GenericUserPreferenceArray(prefsOfUser789));
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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    List<Preference> trainingPrefs = null;
    List<Preference> testPrefs = null;
    PreferenceArray prefs = dataModel.getPreferencesFromUser(userID);
    int size = prefs.length();
    for (int i = 0; i < size; i++) {
      Preference newPref = new GenericPreference(userID, prefs.getItemID(i), prefs.getValue(i));
      if (random.nextDouble() < trainingPercentage) {
        if (trainingPrefs == null) {
          trainingPrefs = new ArrayList<Preference>(3);
        }
        trainingPrefs.add(newPref);
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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    FastIDSet itemIDsFromUser456 = new FastIDSet();
    itemIDsFromUser456.add(1L);
    itemIDsFromUser456.add(2L);

    List<Preference> prefs = new ArrayList<Preference>();
    prefs.add(new GenericPreference(123L, 1L, 1.0f));
    prefs.add(new GenericPreference(456L, 1L, 1.0f));
    PreferenceArray preferencesForItem1 = new GenericItemPreferenceArray(prefs);

    DataModel dataModel = EasyMock.createMock(DataModel.class);
    EasyMock.expect(dataModel.getItemIDsFromUser(123L)).andReturn(itemIDsFromUser123);
    EasyMock.expect(dataModel.getPreferencesForItem(1L)).andReturn(preferencesForItem1);
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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    FastByIDMap<PreferenceArray> result = new FastByIDMap<PreferenceArray>();
    for (int i = 0; i < userIDs.length; i++) {
      List<Preference> prefsList = new ArrayList<Preference>();
      for (int j = 0; j < prefValues[i].length; j++) {
        if (prefValues[i][j] != null) {
          prefsList.add(new GenericPreference(userIDs[i], j, prefValues[i][j].floatValue()));
        }
      }
      if (!prefsList.isEmpty()) {
        result.put(userIDs[i], new GenericUserPreferenceArray(prefsList));
      }
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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          Collection<Preference> userPrefs = userIDPrefMap.get(userID);
          if (userPrefs == null) {
            userPrefs = Lists.newArrayListWithCapacity(2);
            userIDPrefMap.put(userID, userPrefs);
          }
          userPrefs.add(new GenericPreference(userID, itemID, ratingValue));
          if (user.containsKey("created_at") &&
              mongoTimestamp.compareTo(getDate(user.get("created_at"))) < 0) {
            mongoTimestamp = getDate(user.get("created_at"));
          }
        }
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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      for (String line : new FileLineIterable(movieFile, true)) {
        int firstComma = line.indexOf(',');
        Integer userID = Integer.valueOf(line.substring(0, firstComma));
        int secondComma = line.indexOf(',', firstComma + 1);
        float rating = Float.parseFloat(line.substring(firstComma + 1, secondComma));
        prefs.add(new GenericPreference(userID, itemID, rating));
      }
    } catch (IOException ioe) {
      throw new TasteException(ioe);
    }
    return new GenericItemPreferenceArray(prefs);
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Examples of org.apache.mahout.cf.taste.impl.model.GenericPreference

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        Collection<Preference> userPrefs = userIDPrefMap.get(userID);
        if (userPrefs == null) {
          userPrefs = Lists.newArrayListWithCapacity(2);
          userIDPrefMap.put(userID, userPrefs);
        }
        userPrefs.add(new GenericPreference(userID, movieID, rating));
      }
    }
   
    return GenericDataModel.toDataMap(userIDPrefMap, true);
  }
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