Examples of org.jamesii.asf.spdm.dataimport.PerfTupleMetaData

org.jamesii.asf.spdm.dataimport.PerfTupleMetaData
Required meta-data for predictor generators, regarding performance tuples. For example, the categories of nominal attributes have to be known beforehand. An analysis of the data to find out all possibilities within the predictor generator is problematic for two reasons: first, each predictor has to do this, so this causes a large overhead. Second, not all predictors might be exposed to instances with all attributes in their training data (e.g., when using bagging or cross-validation), which might lead to errors. @author Roland Ewald

    Map<Configuration, List<T>> configMap =
        PerformanceTuples.sortToConfigMap(data);


    // Create new metaData that leaves out all attributes belonging to the
    // configuration
    PerfTupleMetaData featureMData = new PerfTupleMetaData();
    featureMData.setNominalAttribs(new HashMap<>(metaData
        .getNominalAttribs()));
    featureMData.setNumericAttribs(new HashSet<>(metaData
        .getNumericAttribs()));
    featureMData.setMaximizePerformance(metaData.isMaximizePerformance());
    Set<String> configAttributes = PerformanceTuples.getConfigAttributes(data);
    for (String configAttrib : configAttributes) {
      featureMData.getNominalAttribs().remove(configAttrib);
      featureMData.getNumericAttribs().remove(configAttrib);
    }


    // TODO(re027): Think of narrowing down the population of configurations to
    // those belonging to the efficient border (->portfolio design), take into
    // account the result size

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   */
  public static void writeToFile(
      PerformanceDataSet<? extends PerformanceTuple> dataSet, String fileName,
      final String delimiter, boolean nominalPerformance) throws IOException {


    PerfTupleMetaData metaData = dataSet.getMetaData();


    List<String> attributes = metaData.getSortedAttributeList();


    try (FileWriter fw = new FileWriter(fileName);
        BufferedWriter bw = new BufferedWriter(fw)) {


      writeHeader(delimiter, attributes, bw);

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  }


  public void testMetaData() {
    PerformanceDataSet dataSet = fileManager.getPerformanceData();
    PerfTupleMetaData metaData = dataSet.getMetaData();
    assertNotNull(metaData);
    assertEquals(4, metaData.getNominalAttribs().size());
    assertEquals(0, metaData.getNumericAttribs().size());
  }

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Related Classes of org.jamesii.asf.spdm.dataimport.PerfTupleMetaData

org.jamesii.asf.spdm.generators.ensemble.EnsemblePredictorGenerator

org.jamesii.simspex.spdm.dataexport.FileExport

org.jamesii.simspex.spdm.dataimport.FileImportManagerTest

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