Examples of org.apache.mahout.clustering.spectral.MatrixDiagonalizeJob.MatrixDiagonalizeMapper

    return sum;
  }


  @Test
  public void testMatrixDiagonalizeMapper() throws Exception {
    MatrixDiagonalizeMapper mapper = new MatrixDiagonalizeMapper();
    Configuration conf = getConfiguration();
    conf.setInt(Keys.AFFINITY_DIMENSIONS, RAW_DIMENSIONS);
    
    // set up the dummy writers
    DummyRecordWriter<NullWritable, IntDoublePairWritable> writer =
      new DummyRecordWriter<NullWritable, IntDoublePairWritable>();
    Mapper<IntWritable, VectorWritable, NullWritable, IntDoublePairWritable>.Context 
      context = DummyRecordWriter.build(mapper, conf, writer);
    
    // perform the mapping
    for (int i = 0; i < RAW_DIMENSIONS; i++) {
      RandomAccessSparseVector toAdd = new RandomAccessSparseVector(RAW_DIMENSIONS);
      toAdd.assign(RAW[i]);
      mapper.map(new IntWritable(i), new VectorWritable(toAdd), context);
    }
    
    // check the number of the results
    assertEquals("Number of map results", RAW_DIMENSIONS,
        writer.getValue(NullWritable.get()).size());

        writer.getValue(NullWritable.get()).size());
  }
  
  @Test
 public void testMatrixDiagonalizeReducer() throws Exception {
    MatrixDiagonalizeMapper mapper = new MatrixDiagonalizeMapper();
    Configuration conf = getConfiguration();
    conf.setInt(Keys.AFFINITY_DIMENSIONS, RAW_DIMENSIONS);
    
    // set up the dummy writers
    DummyRecordWriter<NullWritable, IntDoublePairWritable> mapWriter = 
      new DummyRecordWriter<NullWritable, IntDoublePairWritable>();
    Mapper<IntWritable, VectorWritable, NullWritable, IntDoublePairWritable>.Context 
      mapContext = DummyRecordWriter.build(mapper, conf, mapWriter);
    
    // perform the mapping
    for (int i = 0; i < RAW_DIMENSIONS; i++) {
      RandomAccessSparseVector toAdd = new RandomAccessSparseVector(RAW_DIMENSIONS);
      toAdd.assign(RAW[i]);
      mapper.map(new IntWritable(i), new VectorWritable(toAdd), mapContext);
    }
    
    // now perform the reduction
    MatrixDiagonalizeReducer reducer = new MatrixDiagonalizeReducer();
    DummyRecordWriter<NullWritable, VectorWritable> redWriter = new

Examples of org.apache.mahout.clustering.spectral.MatrixDiagonalizeJob.MatrixDiagonalizeMapper

Related Classes of org.apache.mahout.clustering.spectral.MatrixDiagonalizeJob.MatrixDiagonalizeMapper