/**
* Creates attribute meta data that represents the attribute that will be generated for the
* provided arguments.
*
* @return the {@link AttributeMetaData} for the provided arguments
*/
public static AttributeMetaData generateAttributeMetaData(
ExampleSetMetaData emd, String name, ExpressionType expressionType) {
AttributeMetaData newAttribute = null;
AttributeMetaData existingAtt = emd.getAttributeByName(name);
int ontology = expressionType.getAttributeType();
if (ontology == Ontology.BINOMINAL) {
newAttribute = new AttributeMetaData(name, Ontology.BINOMINAL);
HashSet<String> values = new HashSet<>();
values.add("false");
values.add("true");
newAttribute.setValueSet(values, SetRelation.EQUAL);
} else {
newAttribute = new AttributeMetaData(name, ontology);
}
// restore role if attribute existed already
if (existingAtt != null) {
newAttribute.setRole(existingAtt.getRole());
}
return newAttribute;
}
@Override
protected MetaData modifyMetaData(ExampleSetMetaData metaData) {
try {
AttributeMetaData amd1 =
metaData.getAttributeByName(getParameterAsString(PARAMETER_FIRST_ATTRIBUTE));
AttributeMetaData amd2 =
metaData.getAttributeByName(getParameterAsString(PARAMETER_SECOND_ATTRIBUTE));
if (amd1 != null && amd2 != null) {
String role1 = amd1.getRole();
amd1.setRole(amd2.getRole());
amd2.setRole(role1);
}
} catch (UndefinedParameterError e) {
}
return metaData;
}
@Override
protected Collection<AttributeMetaData> modifyAttributeMetaData(
ExampleSetMetaData emd, AttributeMetaData amd) throws UndefinedParameterError {
AttributeMetaData newAMD =
new AttributeMetaData(amd.getName(), Ontology.NOMINAL, amd.getRole());
Set<String> valueSet = new TreeSet<String>();
if (getParameterAsInt(PARAMETER_RANGE_NAME_TYPE) == DiscretizationModel.RANGE_NAME_SHORT) {
for (int i = 0; i < getParameterAsInt(PARAMETER_NUMBER_OF_BINS); i++) {
valueSet.add("range" + (i + 1));
}
newAMD.setValueSet(valueSet, SetRelation.EQUAL);
} else {
newAMD.setValueSet(valueSet, SetRelation.SUPERSET);
}
return Collections.singletonList(newAMD);
}