/** Function to stores header of a data file. */
private void readHeader() {
String attributeName;
Vector attributeValues;
int i;
name = Attributes.getRelationName();
// Create vectors to hold information temporarily.
attributes = new Vector();
keel.Dataset.Attribute at;
// store attribute,inputs and outputs of the header
for (int j = 0; j < Attributes.getNumAttributes(); j++) {
at = Attributes.getAttribute(j);
attributeName = at.getName();
// check if it is real
if (at.getType() == 2) {
float min = (float) at.getMinAttribute();
float max = (float) at.getMinAttribute();
attributes.addElement(new Attribute(attributeName, j));
Attribute att = (Attribute) attributes.elementAt(j);
att.setRange(min, max);
att.activate();
} else {
if (at.getType() == 1) // check if it is integer
{
int min = (int) at.getMinAttribute();
int max = (int) at.getMinAttribute();
attributes.addElement(new Attribute(attributeName, j));
Attribute att = (Attribute) attributes.elementAt(j);
att.setRange(min, max);
att.activate();
} else // it is nominal
{
attributeValues = new Vector();
for (int k = 0; k < at.getNumNominalValues(); k++) {
attributeValues.addElement(at.getNominalValue(k));
}
attributes.addElement(new Attribute(attributeName, attributeValues, j));
Attribute att = (Attribute) attributes.elementAt(j);
att.activate();
}
}
} // for
// set the index of the output class
classIndex = Attributes.getNumAttributes() - 1;
}
/**
* Enumerates all the attributes.
*
* @return An enumeration that contains all the attributes.
*/
public Enumeration enumerateAttributes() {
Vector help = new Vector(attributes.size() - 1);
for (int i = 0; i < attributes.size(); i++)
if (i != classIndex) help.addElement(attributes.elementAt(i));
return help.elements();
}
/**
* Function to remove all the attributes with missing value in the given attribute.
*
* @param attIndex The index of the attribute.
*/
public final void deleteWithMissing(int attIndex) {
Vector newItemsets = new Vector(numItemsets());
for (int i = 0; i < numItemsets(); i++)
if (!itemset(i).isMissing(attIndex)) newItemsets.addElement(itemset(i));
itemsets = newItemsets;
}
/**
* Function to add one itemset.
*
* @param itemset The itemset to add to the dataset.
*/
public final void addItemset(Itemset itemset) {
Itemset newItemset = (Itemset) itemset.copy();
newItemset.setDataset(this);
itemsets.addElement(newItemset);
}