@Override
public MetaData getGeneratedMetaData() throws OperatorException {
ExampleSetMetaData emd = new ExampleSetMetaData();
AttributeMetaData amd = new AttributeMetaData("label", Ontology.NOMINAL, Attributes.LABEL_NAME);
emd.addAttribute(amd);
int desirendNumberOfAttributes = getParameterAsInt(PARAMETER_NUMBER_ATTRIBUTES);
double mean = getParameterAsDouble(PARAMETER_SPARSE_FRACTION);
if (desirendNumberOfAttributes > 20) {
emd.attributesAreSuperset();
// first ten
for (int i = 1; i < 11; i++) {
AttributeMetaData newAMD = new AttributeMetaData("att" + i, Ontology.REAL);
newAMD.setValueRange(new Range(0, 1), SetRelation.EQUAL);
newAMD.setMean(new MDReal(mean));
emd.addAttribute(newAMD);
}
// last ten
for (int i = desirendNumberOfAttributes - 10; i <= desirendNumberOfAttributes; i++) {
AttributeMetaData newAMD = new AttributeMetaData("att" + i, Ontology.REAL);
newAMD.setValueRange(new Range(0, 1), SetRelation.EQUAL);
newAMD.setMean(new MDReal(mean));
emd.addAttribute(newAMD);
}
} else {
for (int i = 0; i < desirendNumberOfAttributes; i++) {
AttributeMetaData newAMD = new AttributeMetaData("att" + (i + 1), Ontology.REAL);
newAMD.setValueRange(new Range(0, 1), SetRelation.EQUAL);
newAMD.setMean(new MDReal(mean));
emd.addAttribute(newAMD);
}
}
return emd;
}
@Override
protected ExampleSetMetaData modifyMetaData(ExampleSetMetaData exampleSetMetaData)
throws UndefinedParameterError {
AttributeMetaData label = exampleSetMetaData.getLabelMetaData();
if (label != null) {
if (label.isNumerical() && getParameterAsDouble(PARAMETER_LABEL_NOISE) > 0) {
label.setValueSetRelation(SetRelation.SUPERSET);
}
}
double defaultNoise = getParameterAsDouble(PARAMETER_DEFAULT_ATTRIBUTE_NOISE);
if (defaultNoise > 0) {
for (AttributeMetaData amd : exampleSetMetaData.getAllAttributes()) {
if (!amd.isSpecial()) {
if (amd.isNumerical()) {
amd.setValueSetRelation(SetRelation.SUPERSET);
}
}
}
}
int numberOfRandomAttributes = getParameterAsInt(PARAMETER_RANDOM_ATTRIBUTES);
for (int i = 0; i < numberOfRandomAttributes; i++) {
AttributeMetaData amd =
new AttributeMetaData("random" + ((i == 0) ? "" : i + ""), Ontology.REAL);
amd.setValueRange(
new Range(Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY), SetRelation.SUBSET);
exampleSetMetaData.addAttribute(amd);
}
return exampleSetMetaData;
}
@Override
protected MetaData modifyMetaData(ExampleSetMetaData metaData) {
AttributeMetaData weightAttribute =
new AttributeMetaData(Attributes.WEIGHT_NAME, Ontology.REAL, Attributes.WEIGHT_NAME);
weightAttribute.setValueRange(getWeightAttributeRange(), getWeightAttributeValueRelation());
metaData.addAttribute(weightAttribute);
return metaData;
}
@Override
public ExampleSetMetaData applyOnFilteredMetaData(ExampleSetMetaData metaData) {
for (AttributeMetaData amd : metaData.getAllAttributes()) {
if (amd.isNumerical() && !amd.isSpecial()) {
Range range = amd.getValueRange();
amd.setValueRange(
new Range(0, Math.max(Math.abs(range.getLower()), Math.abs(range.getUpper()))),
amd.getValueSetRelation());
amd.getMean().setUnkown();
}
}
return metaData;
}
@Override
public ExampleSetMetaData applyOnFilteredMetaData(ExampleSetMetaData emd) {
boolean round = getParameterAsBoolean(PARAMETER_ROUND);
for (AttributeMetaData amd : emd.getAllAttributes()) {
if ((Ontology.ATTRIBUTE_VALUE_TYPE.isA(amd.getValueType(), Ontology.NUMERICAL))
&& (!Ontology.ATTRIBUTE_VALUE_TYPE.isA(amd.getValueType(), Ontology.INTEGER))) {
amd.setType(Ontology.INTEGER);
}
if (round) {
amd.setValueRange(
new Range(
Math.round(amd.getValueRange().getLower()),
Math.round(amd.getValueRange().getUpper())),
SetRelation.EQUAL);
} else {
amd.setValueRange(
new Range((long) amd.getValueRange().getLower(), (long) amd.getValueRange().getUpper()),
SetRelation.EQUAL);
}
}
return emd;
}