Java SMOreg.setKernel Beispiele

Beispiel #1

  /**
   * Parses a given list of options.
   *
   * <p>
   * <!-- options-start -->
   * Valid options are:
   *
   * <p>
   *
   * <pre> -C &lt;double&gt;
   *  The complexity constant C.
   *  (default 1)</pre>
   *
   * <pre> -N
   *  Whether to 0=normalize/1=standardize/2=neither.
   *  (default 0=normalize)</pre>
   *
   * <pre> -I &lt;classname and parameters&gt;
   *  Optimizer class used for solving quadratic optimization problem
   *  (default weka.classifiers.functions.supportVector.RegSMOImproved)</pre>
   *
   * <pre> -K &lt;classname and parameters&gt;
   *  The Kernel to use.
   *  (default: weka.classifiers.functions.supportVector.PolyKernel)</pre>
   *
   * <pre>
   * Options specific to optimizer ('-I') weka.classifiers.functions.supportVector.RegSMOImproved:
   * </pre>
   *
   * <pre> -T &lt;double&gt;
   *  The tolerance parameter for checking the stopping criterion.
   *  (default 0.001)</pre>
   *
   * <pre> -V
   *  Use variant 1 of the algorithm when true, otherwise use variant 2.
   *  (default true)</pre>
   *
   * <pre> -P &lt;double&gt;
   *  The epsilon for round-off error.
   *  (default 1.0e-12)</pre>
   *
   * <pre> -L &lt;double&gt;
   *  The epsilon parameter in epsilon-insensitive loss function.
   *  (default 1.0e-3)</pre>
   *
   * <pre> -W &lt;double&gt;
   *  The random number seed.
   *  (default 1)</pre>
   *
   * <pre>
   * Options specific to kernel ('-K') weka.classifiers.functions.supportVector.PolyKernel:
   * </pre>
   *
   * <pre> -D
   *  Enables debugging output (if available) to be printed.
   *  (default: off)</pre>
   *
   * <pre> -no-checks
   *  Turns off all checks - use with caution!
   *  (default: checks on)</pre>
   *
   * <pre> -C &lt;num&gt;
   *  The size of the cache (a prime number), 0 for full cache and
   *  -1 to turn it off.
   *  (default: 250007)</pre>
   *
   * <pre> -E &lt;num&gt;
   *  The Exponent to use.
   *  (default: 1.0)</pre>
   *
   * <pre> -L
   *  Use lower-order terms.
   *  (default: no)</pre>
   *
   * <!-- options-end -->
   *
   * @param options the list of options as an array of strings
   * @throws Exception if an option is not supported
   */
  public void setOptions(String[] options) throws Exception {
    String tmpStr;
    String[] tmpOptions;

    tmpStr = Utils.getOption('C', options);
    if (tmpStr.length() != 0) {
      setC(Double.parseDouble(tmpStr));
    } else {
      setC(1.0);
    }

    String nString = Utils.getOption('N', options);
    if (nString.length() != 0) {
      setFilterType(new SelectedTag(Integer.parseInt(nString), TAGS_FILTER));
    } else {
      setFilterType(new SelectedTag(FILTER_NORMALIZE, TAGS_FILTER));
    }

    tmpStr = Utils.getOption('I', options);
    tmpOptions = Utils.splitOptions(tmpStr);
    if (tmpOptions.length != 0) {
      tmpStr = tmpOptions[0];
      tmpOptions[0] = "";
      setRegOptimizer((RegOptimizer) Utils.forName(RegOptimizer.class, tmpStr, tmpOptions));
    } else {
      setRegOptimizer(new RegSMOImproved());
    }

    tmpStr = Utils.getOption('K', options);
    tmpOptions = Utils.splitOptions(tmpStr);
    if (tmpOptions.length != 0) {
      tmpStr = tmpOptions[0];
      tmpOptions[0] = "";
      setKernel(Kernel.forName(tmpStr, tmpOptions));
    } else {
      setKernel(new PolyKernel());
    }

    super.setOptions(options);

    Utils.checkForRemainingOptions(options);
  }