public double getInformationFor()
{
String attributeName = specification.getTarget();
Hashtable counts = new Hashtable();
foreach (Example e in examples)
{
String val = e.getAttributeValueAsString(attributeName);
if (counts.Contains(val))
{
counts[val] = (((int)counts[val]) + 1);
}
else
{
counts.Add(val, 1);
}
}
//double totalTargetAttributeCount = 0; not used
double[] data = new double[counts.Keys.Count];
IEnumerator iter = counts.Values.GetEnumerator();
for (int i = 0; i < data.Length; i++)
{
iter.MoveNext();
data[i] = double.Parse(iter.Current.ToString());
}
data = Util.normalize(data);
return(Util.information(data));
}
public static Example exampleFromString(string data, DataSetSpecification dataSetSpec, string separator)
{
Hashtable attributes = new Hashtable();
//ArrayList attributeValues = Arrays.asList(data.Split(separator.ToCharArray()[0]));
string[] splitData = data.Split(separator.ToCharArray()[0]);
ArrayList attributeValues = new ArrayList();
foreach (string str in splitData)
{
attributeValues.Add(str);
}
if (dataSetSpec.isValid(attributeValues))
{
ArrayList names = dataSetSpec.getAttributeNames();
IEnumerator nameiter = names.GetEnumerator();
IEnumerator valueiter = attributeValues.GetEnumerator();
while (nameiter.MoveNext() && valueiter.MoveNext())
{
string name = nameiter.Current.ToString();
AttributeSpecification attributeSpec = dataSetSpec.getAttributeSpecFor(name);
Attribute attribute = attributeSpec.createAttribute(valueiter.Current.ToString());
//attributes.put(name,attribute);
if (attributes.Contains(name))
{
attributes[name] = attribute;
}
else
{
attributes.Add(name, attribute);
}
}
string targetAttributeName = dataSetSpec.getTarget();
//AttributeSpecification attributeSpec =dataSetSpec.getAttributeSpecFor(targetAttributeName );
AttributeSpecification _attributeSpec = dataSetSpec.getAttributeSpecFor(targetAttributeName);
return(new Example(attributes, (Attribute)attributes[targetAttributeName]));
}
else
{
throw new Exception("Unable to construct Example from " + data);
}
}
public static Example exampleFromString(string data,DataSetSpecification dataSetSpec,string separator)
{
Hashtable attributes = new Hashtable();
//ArrayList attributeValues = Arrays.asList(data.Split(separator.ToCharArray()[0]));
string[] splitData = data.Split(separator.ToCharArray()[0]);
ArrayList attributeValues = new ArrayList();
foreach (string str in splitData)
{
attributeValues.Add(str);
}
if (dataSetSpec.isValid(attributeValues))
{
ArrayList names = dataSetSpec.getAttributeNames();
IEnumerator nameiter = names.GetEnumerator();
IEnumerator valueiter = attributeValues.GetEnumerator();
while(nameiter.MoveNext() && valueiter.MoveNext())
{
string name = nameiter.Current.ToString();
AttributeSpecification attributeSpec = dataSetSpec.getAttributeSpecFor(name);
Attribute attribute = attributeSpec.createAttribute(valueiter.Current.ToString());
//attributes.put(name,attribute);
if (attributes.Contains(name))
attributes[name] = attribute;
else
attributes.Add(name,attribute);
}
string targetAttributeName = dataSetSpec.getTarget();
//AttributeSpecification attributeSpec =dataSetSpec.getAttributeSpecFor(targetAttributeName );
AttributeSpecification _attributeSpec =dataSetSpec.getAttributeSpecFor(targetAttributeName );
return new Example(attributes,(Attribute)attributes[targetAttributeName]);
}
else
{
throw new Exception("Unable to construct Example from " + data);
}
}
