Examples of EntityPrefWritable

Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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  protected void reduce(VarLongWritable key,
                        Iterable<EntityPrefWritable> values,
                        Context context) throws IOException, InterruptedException {
    List<EntityPrefWritable> prefs = new ArrayList<EntityPrefWritable>();
    for (EntityPrefWritable writable : values) {
      prefs.add(new EntityPrefWritable(writable));
    }
    Collections.sort(prefs, ByItemIDComparator.getInstance());
    int size = prefs.size();
    for (int i = 0; i < size; i++) {
      EntityPrefWritable first = prefs.get(i);
      long itemAID = first.getID();
      float itemAValue = first.getPrefValue();
      for (int j = i + 1; j < size; j++) {
        EntityPrefWritable second = prefs.get(j);
        long itemBID = second.getID();
        float itemBValue = second.getPrefValue();
        context.write(new EntityEntityWritable(itemAID, itemBID), new FloatWritable(itemBValue - itemAValue));
      }
    }
  }
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Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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  @Test
  public void testToItemPrefsMapper() throws Exception {
    Mapper<LongWritable,Text, VarLongWritable,VarLongWritable>.Context context =
      EasyMock.createMock(Mapper.Context.class);

    context.write(new VarLongWritable(12L), new EntityPrefWritable(34L, 1.0f));
    context.write(new VarLongWritable(56L), new EntityPrefWritable(78L, 2.0f));
    EasyMock.replay(context);

    ToItemPrefsMapper mapper = new ToItemPrefsMapper();
    mapper.map(new LongWritable(123L), new Text("12,34,1"), context);
    mapper.map(new LongWritable(456L), new Text("56,78,2"), context);
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Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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        MathHelper.elem(TasteHadoopUtils.idToIndex(34L), 1.0), MathHelper.elem(TasteHadoopUtils.idToIndex(56L), 2.0)));

    EasyMock.replay(context);

    List<VarLongWritable> varLongWritables = new LinkedList<VarLongWritable>();
    varLongWritables.add(new EntityPrefWritable(34L, 1.0f));
    varLongWritables.add(new EntityPrefWritable(56L, 2.0f));

    new ToUserVectorReducer().reduce(new VarLongWritable(12L), varLongWritables, context);

    EasyMock.verify(context);
  }
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Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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  protected void reduce(VarLongWritable key,
                        Iterable<EntityPrefWritable> values,
                        Context context) throws IOException, InterruptedException {
    List<EntityPrefWritable> prefs = Lists.newArrayList();
    for (EntityPrefWritable writable : values) {
      prefs.add(new EntityPrefWritable(writable));
    }
    Collections.sort(prefs, ByItemIDComparator.getInstance());
    int size = prefs.size();
    for (int i = 0; i < size; i++) {
      EntityPrefWritable first = prefs.get(i);
      long itemAID = first.getID();
      float itemAValue = first.getPrefValue();
      for (int j = i + 1; j < size; j++) {
        EntityPrefWritable second = prefs.get(j);
        long itemBID = second.getID();
        float itemBValue = second.getPrefValue();
        context.write(new EntityEntityWritable(itemAID, itemBID), new FloatWritable(itemBValue - itemAValue));
      }
    }
  }
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Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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  @Test
  public void testToItemPrefsMapper() throws Exception {
    Mapper<LongWritable,Text, VarLongWritable,VarLongWritable>.Context context =
      EasyMock.createMock(Mapper.Context.class);

    context.write(new VarLongWritable(12L), new EntityPrefWritable(34L, 1.0f));
    context.write(new VarLongWritable(56L), new EntityPrefWritable(78L, 2.0f));
    EasyMock.replay(context);

    ToItemPrefsMapper mapper = new ToItemPrefsMapper();
    mapper.map(new LongWritable(123L), new Text("12,34,1"), context);
    mapper.map(new LongWritable(456L), new Text("56,78,2"), context);
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Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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        MathHelper.elem(TasteHadoopUtils.idToIndex(34L), 1.0), MathHelper.elem(TasteHadoopUtils.idToIndex(56L), 2.0)));

    EasyMock.replay(context, userCounters);

    Collection<VarLongWritable> varLongWritables = Lists.newLinkedList();
    varLongWritables.add(new EntityPrefWritable(34L, 1.0f));
    varLongWritables.add(new EntityPrefWritable(56L, 2.0f));

    new ToUserVectorsReducer().reduce(new VarLongWritable(12L), varLongWritables, context);

    EasyMock.verify(context, userCounters);
  }
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Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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  @Test
  public void testToItemPrefsMapper() throws Exception {
    Mapper<LongWritable,Text, VarLongWritable,VarLongWritable>.Context context =
      EasyMock.createMock(Mapper.Context.class);

    context.write(new VarLongWritable(12L), new EntityPrefWritable(34L, 1.0f));
    context.write(new VarLongWritable(56L), new EntityPrefWritable(78L, 2.0f));
    EasyMock.replay(context);

    ToItemPrefsMapper mapper = new ToItemPrefsMapper();
    mapper.map(new LongWritable(123L), new Text("12,34,1"), context);
    mapper.map(new LongWritable(456L), new Text("56,78,2"), context);
View Full Code Here

Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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        MathHelper.elem(TasteHadoopUtils.idToIndex(34L), 1.0), MathHelper.elem(TasteHadoopUtils.idToIndex(56L), 2.0)));

    EasyMock.replay(context);

    Collection<VarLongWritable> varLongWritables = new LinkedList<VarLongWritable>();
    varLongWritables.add(new EntityPrefWritable(34L, 1.0f));
    varLongWritables.add(new EntityPrefWritable(56L, 2.0f));

    new ToUserVectorReducer().reduce(new VarLongWritable(12L), varLongWritables, context);

    EasyMock.verify(context);
  }
View Full Code Here

Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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  @Test
  public void testToItemPrefsMapper() throws Exception {
    Mapper<LongWritable,Text, VarLongWritable,VarLongWritable>.Context context =
      EasyMock.createMock(Mapper.Context.class);

    context.write(new VarLongWritable(12L), new EntityPrefWritable(34L, 1.0f));
    context.write(new VarLongWritable(56L), new EntityPrefWritable(78L, 2.0f));
    EasyMock.replay(context);

    ToItemPrefsMapper mapper = new ToItemPrefsMapper();
    mapper.map(new LongWritable(123L), new Text("12,34,1"), context);
    mapper.map(new LongWritable(456L), new Text("56,78,2"), context);
View Full Code Here

Examples of org.apache.mahout.cf.taste.hadoop.EntityPrefWritable

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        MathHelper.elem(TasteHadoopUtils.idToIndex(34L), 1.0), MathHelper.elem(TasteHadoopUtils.idToIndex(56L), 2.0)));

    EasyMock.replay(context, userCounters);

    Collection<VarLongWritable> varLongWritables = Lists.newLinkedList();
    varLongWritables.add(new EntityPrefWritable(34L, 1.0f));
    varLongWritables.add(new EntityPrefWritable(56L, 2.0f));

    new ToUserVectorsReducer().reduce(new VarLongWritable(12L), varLongWritables, context);

    EasyMock.verify(context, userCounters);
  }
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