Package org.apache.mahout.cf.taste.model

Examples of org.apache.mahout.cf.taste.model.Preference

283
284
285
286
287
288
289
290
291
292
293
294
    if (preferenceValueString.length() == 0) {
      // remove pref
      Iterator<Preference> prefsIterator = prefs.iterator();
      while (prefsIterator.hasNext()) {
        Preference pref = prefsIterator.next();
        if (pref.getItemID() == itemID) {
          prefsIterator.remove();
          break;
        }
      }
    } else {
View Full Code Here
177
178
179
180
181
182
183
184
185
186
187
188
      List<Preference> prefs2 = new ArrayList<Preference>(prefs2Array.length());
      for (Preference pref : prefs2Array) {
        prefs2.add(pref);
      }
      for (Iterator<Preference> iterator = prefs2.iterator(); iterator.hasNext();) {
        Preference pref = iterator.next();
        if (relevantItemIDs.contains(pref.getItemID())) {
          iterator.remove();
        }
      }
      if (!prefs2.isEmpty()) {
       trainingUsers.put(userID2, new GenericUserPreferenceArray(prefs2));
View Full Code Here
135
136
137
138
139
140
141
142
143
144
145
    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);
View Full Code Here
51
52
53
54
55
56
57
58
59
60
61
  }

  public GenericItemPreferenceArray(List<Preference> prefs) {
    this(prefs.size());
    for (int i = 0; i < prefs.size(); i++) {
      Preference pref = prefs.get(i);
      IDs[i] = pref.getUserID();
      values[i] = pref.getValue();
    }
    id = prefs.get(0).getItemID();
  }
View Full Code Here
46
47
48
49
50
51
52
53
54
55
  }

  public BooleanItemPreferenceArray(List<Preference> prefs, boolean forOneUser) {
    this(prefs.size());
    for (int i = 0; i < prefs.size(); i++) {
      Preference pref = prefs.get(i);
      IDs[i] = forOneUser ? pref.getItemID() : pref.getUserID();
    }
    id = forOneUser ? prefs.get(0).getUserID() : prefs.get(0).getItemID();
  }
View Full Code Here
52
53
54
55
56
57
58
59
60
61
62
  }

  public GenericUserPreferenceArray(List<Preference> prefs) {
    this(prefs.size());
    for (int i = 0; i < prefs.size(); i++) {
      Preference pref = prefs.get(i);
      IDs[i] = pref.getItemID();
      values[i] = pref.getValue();
    }
    id = prefs.get(0).getUserID();
  }
View Full Code Here
46
47
48
49
50
51
52
53
54
55
  }

  public BooleanUserPreferenceArray(List<Preference> prefs) {
    this(prefs.size());
    for (int i = 0; i < prefs.size(); i++) {
      Preference pref = prefs.get(i);
      IDs[i] = pref.getItemID();
    }
    id = prefs.get(0).getUserID();
  }
View Full Code Here
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
  public GenericItemPreferenceArray(List<? extends Preference> prefs) {
    this(prefs.size());
    int size = prefs.size();
    long itemID = Long.MIN_VALUE;
    for (int i = 0; i < size; i++) {
      Preference pref = prefs.get(i);
      ids[i] = pref.getUserID();
      if (i == 0) {
        itemID = pref.getItemID();
      } else {
        if (itemID != pref.getItemID()) {
          throw new IllegalArgumentException("Not all item IDs are the same");
        }
      }
      values[i] = pref.getValue();
    }
    id = itemID;
  }
View Full Code Here
216
217
218
219
220
221
222
223
224
225
226
227
      List<Preference> prefs2 = new ArrayList<Preference>(prefs2Array.length());
      for (Preference pref : prefs2Array) {
        prefs2.add(pref);
      }
      for (Iterator<Preference> iterator = prefs2.iterator(); iterator.hasNext();) {
        Preference pref = iterator.next();
        if (relevantItemIDs.contains(pref.getItemID())) {
          iterator.remove();
        }
      }
      if (!prefs2.isEmpty()) {
        trainingUsers.put(userID2, new GenericUserPreferenceArray(prefs2));
View Full Code Here
49
50
51
52
53
54
55
56
57
58
59
60
 
  public BooleanItemPreferenceArray(List<? extends Preference> prefs, boolean forOneUser) {
    this(prefs.size());
    int size = prefs.size();
    for (int i = 0; i < size; i++) {
      Preference pref = prefs.get(i);
      ids[i] = forOneUser ? pref.getItemID() : pref.getUserID();
    }
    if (size > 0) {
      id = forOneUser ? prefs.get(0).getUserID() : prefs.get(0).getItemID();
    }
  }
View Full Code Here
TOP

Related Classes of org.apache.mahout.cf.taste.model.Preference

  • mia.recommender.ch03.CreatePreferenceArray
  • org.apache.mahout.cf.taste.hadoop.example.als.netflix.NetflixDatasetConverter
  • org.apache.mahout.cf.taste.impl.eval.AbstractDifferenceRecommenderEvaluator
  • org.apache.mahout.cf.taste.impl.eval.GenericRecommenderIRStatsEvaluator
  • org.apache.mahout.cf.taste.impl.eval.GenericRelevantItemsDataSplitter
  • org.apache.mahout.cf.taste.impl.model.BooleanItemPreferenceArray
  • org.apache.mahout.cf.taste.impl.model.BooleanUserPreferenceArray
  • org.apache.mahout.cf.taste.impl.model.file.FileDataModel
  • org.apache.mahout.cf.taste.impl.model.file.FileDataModelTest
  • org.apache.mahout.cf.taste.impl.model.GenericItemPreferenceArray
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.