Package org.apache.mahout.math

Examples of org.apache.mahout.math.NamedVector

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    if (sequentialAccess) {
      vector = new SequentialAccessSparseVector(vector);
    }
   
    if (namedVector) {
      vector = new NamedVector(vector, key.toString());
    }
   
    VectorWritable vectorWritable = new VectorWritable(vector);
    context.write(key, vectorWritable);
  }
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        new SequenceFile.Writer(fs, conf, outputPath, IntWritable.class, VectorWritable.class);
    try {
      IntWritable iw = new IntWritable();
      for (int i = 0; i < numEigenVectors; i++) {
        // Persist eigenvectors sorted by eigenvalues in descending order\
        NamedVector v = new NamedVector(state.getRightSingularVector(numEigenVectors - 1 - i),
            "eigenVector" + i + ", eigenvalue = " + state.getSingularValue(numEigenVectors - 1 - i));
        Writable vw = new VectorWritable(v);
        iw.set(i);
        seqWriter.append(iw, vw);
      }
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    Configuration conf = new Configuration();
    Collection<Double> newEigenValues = Lists.newArrayList();

    int i = 0;
    for (VectorWritable value : new SequenceFileValueIterable<VectorWritable>(cleanEigenvectors, conf)) {
      NamedVector v = (NamedVector) value.get();
      eigenVectors.assignRow(i, v);
      log.info(v.getName());
      if(EigenVector.getCosAngleError(v.getName()) < 1.0e-3) {
        eigenvalues.add(EigenVector.getEigenValue(v.getName()));
      }
      i++;
    }
    assertEquals("number of clean eigenvectors", 3, i);

    i = 0;
    for (VectorWritable value : new SequenceFileValueIterable<VectorWritable>(cleanEigenvectors2, conf)) {
      NamedVector v = (NamedVector) value.get();
      log.info(v.getName());
      eigenVectors2.assignRow(i, v);
      newEigenValues.add(EigenVector.getEigenValue(v.getName()));
      i++;
    }

    Collection<Integer> oldEigensFound = Lists.newArrayList();
    for(int row = 0; row < eigenVectors.numRows(); row++) {
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        mapper);
   
    i = 0;
    for (Vector vector : iterable) {
      assertNotNull(vector);
      NamedVector namedVector;
      if (vector instanceof NamedVector) {
        // rename it for testing purposes
        namedVector = new NamedVector(((NamedVector) vector).getDelegate(),
            "P(" + i + ')');
       
      } else {
        namedVector = new NamedVector(vector, "P(" + i + ')');
      }
      System.out.println(AbstractCluster.formatVector(namedVector,
          termDictionary));
      sampleData.add(new VectorWritable(namedVector));
      i++;
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  }
 
  @Test
  public void testDirichlet2() throws Exception {
    Path output = getTestTempDirPath("output");
    NamedVector prototype = (NamedVector) sampleData.get(0).get();
    DistributionDescription description = new DistributionDescription(
        GaussianClusterDistribution.class.getName(),
        RandomAccessSparseVector.class.getName(), null, prototype.getDelegate()
            .size());
    Configuration conf = new Configuration();
    DirichletDriver.run(conf, getTestTempDirPath("testdata"), output,
        description, 15, 10, 1.0, true, true, 0, true);
    // run ClusterDumper
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  }
 
  @Test
  public void testDirichlet3() throws Exception {
    Path output = getTestTempDirPath("output");
    NamedVector prototype = (NamedVector) sampleData.get(0).get();
    DistributionDescription description = new DistributionDescription(
        DistanceMeasureClusterDistribution.class.getName(),
        RandomAccessSparseVector.class.getName(),
        ManhattanDistanceMeasure.class.getName(), prototype.getDelegate()
            .size());
    Configuration conf = new Configuration();
    DirichletDriver.run(conf, getTestTempDirPath("testdata"), output,
        description, 15, 10, 1.0, true, true, 0, true);
    // run ClusterDumper
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          name = indexReader.document(doc, idFieldSelector).get(idField);
        } else {
          name = String.valueOf(doc);
        }
        if (normPower == NO_NORMALIZING) {
          result = new NamedVector(result, name);
        } else {
          result = new NamedVector(result.normalize(normPower), name);
        }
      } catch (IOException e) {
        // Log?
        throw new IllegalStateException(e);
      }
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    if (sequentialAccess) {
      vector = new SequentialAccessSparseVector(vector);
    }
   
    if (namedVector) {
      vector = new NamedVector(vector, key.toString());
    }
   
    VectorWritable vectorWritable = new VectorWritable(vector);
    context.write(key, vectorWritable);
  }
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        Cluster cluster = (Cluster) value;
        Vector vector = cluster.getCenter();
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, cluster.getIdentifier()));
        }
      } else if (valueClass.equals(Canopy.class)) {
        // get the cluster info
        Canopy canopy = (Canopy) value;
        Vector vector = canopy.getCenter();
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, canopy.getIdentifier()));
        }
      } else if (valueClass.equals(Vector.class)) {
        Vector vector = (Vector) value;
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, seedPathStr + '.' + item++));
        }
      } else if (valueClass.equals(VectorWritable.class) || valueClass.isInstance(VectorWritable.class)) {
        VectorWritable vw = (VectorWritable) value;
        Vector vector = vw.get();
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, seedPathStr + '.' + item++));
        }
      } else {
        throw new IllegalStateException("Bad value class: " + valueClass);
      }
    }
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        Kluster cluster = (Kluster) value;
        Vector vector = cluster.getCenter();
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, cluster.getIdentifier()));
        }
      } else if (valueClass.equals(Canopy.class)) {
        // get the cluster info
        Canopy canopy = (Canopy) value;
        Vector vector = canopy.getCenter();
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, canopy.getIdentifier()));
        }
      } else if (valueClass.equals(Vector.class)) {
        Vector vector = (Vector) value;
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, seedPathStr + '.' + item++));
        }
      } else if (valueClass.equals(VectorWritable.class) || valueClass.isInstance(VectorWritable.class)) {
        VectorWritable vw = (VectorWritable) value;
        Vector vector = vw.get();
        if (vector instanceof NamedVector) {
          seedVectors.add((NamedVector) vector);
        } else {
          seedVectors.add(new NamedVector(vector, seedPathStr + '.' + item++));
        }
      } else {
        throw new IllegalStateException("Bad value class: " + valueClass);
      }
    }
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