Package org.apache.mahout.cf.taste.impl.common

Examples of org.apache.mahout.cf.taste.impl.common.LongPrimitiveArrayIterator

167
168
169
170
171
172
173
    return result;
  }

  @Override
  public LongPrimitiveArrayIterator getItemIDs() {
    return new LongPrimitiveArrayIterator(itemIDs);
  }
View Full Code Here
125
126
127
128
129
130
131
    return (FastByIDMap<FastIDSet>) (FastByIDMap<?>) data;
  }

  @Override
  public LongPrimitiveArrayIterator getUserIDs() {
    return new LongPrimitiveArrayIterator(userIDs);
  }
View Full Code Here
157
158
159
160
161
162
163
    return itemIDs;
  }

  @Override
  public LongPrimitiveArrayIterator getItemIDs() {
    return new LongPrimitiveArrayIterator(itemIDs);
  }
View Full Code Here
168
169
170
171
172
173
174
    return this.preferenceForItems;
  }
 
  @Override
  public LongPrimitiveArrayIterator getUserIDs() {
    return new LongPrimitiveArrayIterator(userIDs);
  }
View Full Code Here
203
204
205
206
207
208
209
    return itemIDs;
  }
 
  @Override
  public LongPrimitiveArrayIterator getItemIDs() {
    return new LongPrimitiveArrayIterator(itemIDs);
  }
View Full Code Here
197
198
199
200
201
202
203
    return this.preferenceForItems;
  }

  @Override
  public LongPrimitiveArrayIterator getUserIDs() {
    return new LongPrimitiveArrayIterator(userIDs);
  }
View Full Code Here
226
227
228
229
230
231
232
    return result;
  }
 
  @Override
  public LongPrimitiveArrayIterator getItemIDs() {
    return new LongPrimitiveArrayIterator(itemIDs);
  }
View Full Code Here
197
198
199
200
201
202
203
    return this.preferenceForItems;
  }

  @Override
  public LongPrimitiveArrayIterator getUserIDs() {
    return new LongPrimitiveArrayIterator(userIDs);
  }
View Full Code Here
226
227
228
229
230
231
232
    return result;
  }
 
  @Override
  public LongPrimitiveArrayIterator getItemIDs() {
    return new LongPrimitiveArrayIterator(itemIDs);
  }
View Full Code Here
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
    return max > MAX_LIMIT ? MAX_LIMIT : (int) max;
  }

  @Override
  protected FastIDSet doGetCandidateItems(long[] preferredItemIDs, DataModel dataModel) throws TasteException {
    LongPrimitiveIterator preferredItemIDsIterator = new LongPrimitiveArrayIterator(preferredItemIDs);
    if (preferredItemIDs.length > maxItems) {
      double samplingRate = (double) maxItems / preferredItemIDs.length;
//      log.info("preferredItemIDs.length {}, samplingRate {}", preferredItemIDs.length, samplingRate);
      preferredItemIDsIterator =
          new SamplingLongPrimitiveIterator(preferredItemIDsIterator, samplingRate);
    }
    FastIDSet possibleItemsIDs = new FastIDSet();
    while (preferredItemIDsIterator.hasNext()) {
      long itemID = preferredItemIDsIterator.nextLong();
      PreferenceArray prefs = dataModel.getPreferencesForItem(itemID);
      int prefsLength = prefs.length();
      if (prefsLength > maxUsersPerItem) {
        Iterator<Preference> sampledPrefs =
            new FixedSizeSamplingIterator<Preference>(maxUsersPerItem, prefs.iterator());
View Full Code Here
TOP

Related Classes of org.apache.mahout.cf.taste.impl.common.LongPrimitiveArrayIterator

  • org.apache.mahout.cf.taste.impl.model.GenericBooleanPrefDataModel
  • org.apache.mahout.cf.taste.impl.model.GenericDataModel
  • org.apache.mahout.cf.taste.impl.recommender.SamplingCandidateItemsStrategy
  • org.apache.mahout.cf.taste.impl.recommender.TopItemsTest
  • java.util.NoSuchElementException
    • 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.