Package org.apache.mahout.math

Examples of org.apache.mahout.math.DenseVector

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public class TrainingState {
  TrainingState(Matrix eigens, Matrix projections) {
    setCurrentEigens(eigens);
    setTrainingProjections(projections);
    setTrainingIndex(0);
    setHelperVector(new DenseVector("helper", eigens.numRows()));
    setFirstPass(true);
    setStatusProgress(new ArrayList<EigenStatus>());
    setActivationNumerator(0);
    setActivationDenominatorSquared(0);
    setNumEigensProcessed(0);
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    return getCurrentEigens().getRow(getNumEigensProcessed() - 1);
  }

  public Vector currentTrainingProjection() {
    if (getTrainingProjections().getRow(getTrainingIndex()) == null)
      getTrainingProjections().assignRow(getTrainingIndex(), new DenseVector(getCurrentEigens().numCols()));
    return getTrainingProjections().getRow(getTrainingIndex());
  }
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  @Override
  public void paint(Graphics g) {
    super.plotSampleData(g);
    Graphics2D g2 = (Graphics2D) g;
   
    Vector dv = new DenseVector(2);
    int i = DisplayDirichlet.result.size() - 1;
    for (Model<VectorWritable>[] models : result) {
      g2.setStroke(new BasicStroke(i == 0 ? 3 : 1));
      g2.setColor(colors[Math.min(DisplayDirichlet.colors.length - 1, i--)]);
      for (Model<VectorWritable> m : models) {
        NormalModel mm = (NormalModel) m;
        dv.assign(mm.getStdDev() * 3);
        if (DisplayDirichlet.isSignificant(mm)) {
          DisplayDirichlet.plotEllipse(g2, mm.getMean(), dv);
        }
      }
    }
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    generateResults();
    new DisplaySNDirichlet();
  }
 
  static void generateResults() {
    DisplayDirichlet.generateResults(new SampledNormalDistribution(new VectorWritable(new DenseVector(2))));
  }
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  @Override
  public void paint(Graphics g) {
    super.plotSampleData(g);
    Graphics2D g2 = (Graphics2D) g;
   
    Vector dv = new DenseVector(2);
    int i = DisplayDirichlet.result.size() - 1;
    for (Model<VectorWritable>[] models : result) {
      g2.setStroke(new BasicStroke(i == 0 ? 3 : 1));
      g2.setColor(colors[Math.min(DisplayDirichlet.colors.length - 1, i--)]);
      for (Model<VectorWritable> m : models) {
        NormalModel mm = (NormalModel) m;
        dv.assign(mm.getStdDev() * 3);
        if (DisplayDirichlet.isSignificant(mm)) {
          DisplayDirichlet.plotEllipse(g2, mm.getMean(), dv);
        }
      }
    }
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          String[] data = ARFFVectorIterable.SPACE_PATTERN.split(split); // first is index, second is
          int idx = Integer.parseInt(data[0]);
          result.setQuick(idx, model.getValue(data[1], idx));
        }
      } else {
        result = new DenseVector(model.getLabelSize());
        String[] splits = ARFFVectorIterable.COMMA_PATTERN.split(line);
        for (int i = 0; i < splits.length; i++) {
          result.setQuick(i, model.getValue(splits[i], i));
        }
      }
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    generateResults();
    new DisplayNDirichlet();
  }
 
  static void generateResults() {
    DisplayDirichlet.generateResults(new NormalModelDistribution(new VectorWritable(new DenseVector(2))));
  }
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  // Override the paint() method
  @Override
  public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    plotSampleData(g);
    Vector v = new DenseVector(2);
    Vector dv = new DenseVector(2);
    g2.setColor(Color.RED);
    int i = 0;
    for (Vector param : sampleParams) {
      i++;
      v.set(0, param.get(0));
      v.set(1, param.get(1));
      dv.set(0, param.get(2) * 3);
      dv.set(1, param.get(3) * 3);
      plotEllipse(g2, v, dv);
    }
  }
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    double sx = (double) res / ds;
    g2.setTransform(AffineTransform.getScaleInstance(sx, sx));
   
    // plot the axes
    g2.setColor(Color.BLACK);
    Vector dv = new DenseVector(2).assign(size / 2.0);
    plotRectangle(g2, new DenseVector(2).assign(2), dv);
    plotRectangle(g2, new DenseVector(2).assign(-2), dv);
   
    // plot the sample data
    g2.setColor(Color.DARK_GRAY);
    dv.assign(0.03);
    for (VectorWritable v : sampleData) {
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   * @param dv
   *          a Vector of rectangle dimensions
   */
  public static void plotRectangle(Graphics2D g2, Vector v, Vector dv) {
    double[] flip = {1, -1};
    Vector v2 = v.times(new DenseVector(flip));
    v2 = v2.minus(dv.divide(2));
    int h = size / 2;
    double x = v2.get(0) + h;
    double y = v2.get(1) + h;
    g2.draw(new Rectangle2D.Double(x * ds, y * ds, dv.get(0) * ds, dv.get(1) * ds));
 
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