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Viewing changes to src/de/lmu/ifi/dbs/elki/datasource/filter/normalization/LengthNormalization.java

  • Committer: Package Import Robot
  • Author(s): Erich Schubert
  • Date: 2012-12-14 20:45:15 UTC
  • mfrom: (1.1.6)
  • Revision ID: package-import@ubuntu.com-20121214204515-4m0d0er9ivtu5w9d
Tags: 0.5.5-1
New upstream release: 0.5.5 interim release.

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src/de/lmu/ifi/dbs/elki/datasource/filter/normalization/LengthNormalization.java
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 * 
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 * @param <V> vector type
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 */
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public class LengthNormalization<V extends NumberVector<V, ?>> extends AbstractStreamNormalization<V> {
 
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public class LengthNormalization<V extends NumberVector<?>> extends AbstractStreamNormalization<V> {
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  /**
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   * Norm to use
 
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   * Norm to use.
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   */
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  DoubleNorm<? super V> norm;
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  /**
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   * Constructor
 
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   * Constructor.
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   * 
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   * @param norm Norm to use
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   */
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  @Override
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  protected V filterSingleObject(V featureVector) {
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    final double d = norm.doubleNorm(featureVector);
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    return featureVector.newNumberVector(featureVector.getColumnVector().timesEquals(1 / d).getArrayRef());
 
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    return factory.newNumberVector(featureVector.getColumnVector().timesEquals(1 / d).getArrayRef());
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  }
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  @Override
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  public V restore(V featureVector) throws NonNumericFeaturesException {
 
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  public V restore(V featureVector) {
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    throw new UnsupportedOperationException();
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  }
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   * 
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   * @apiviz.exclude
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   */
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  public static class Parameterizer<V extends NumberVector<V, ?>> extends AbstractParameterizer {
 
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  public static class Parameterizer<V extends NumberVector<?>> extends AbstractParameterizer {
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    /**
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     * Option ID for normalization norm
 
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     * Option ID for normalization norm.
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     */
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    public static final OptionID NORM_ID = OptionID.getOrCreateOptionID("normalization.norm", "Norm (length function) to use for computing the vector length.");
 
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    public static final OptionID NORM_ID = new OptionID("normalization.norm", "Norm (length function) to use for computing the vector length.");
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    /**
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     * Norm to use
 
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     * Norm to use.
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     */
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    DoubleNorm<? super V> norm;
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