/*
* Generate the candidate items
*/
private void candidateFrequentItems(AttributeItem attrItem) {
AttributeItemSet attrItemSet = new AttributeItemSet();
attrItemSet.addCandidateItemSet(attrItem);
if (_itemSet.contains(attrItemSet)) {
AttributeItemSet orgItemSet = _itemSet.get(_itemSet.indexOf(attrItemSet));
orgItemSet.increaseCoverage();
} else {
_itemSet.add(attrItemSet);
}
}
/*
* Combine two item sets of size k into an item set of size k+1
* The maximum k is set to 5 at the moment
*/
private void combineItemSet() {
ArrayList<AttributeItemSet> tempItemSet = new ArrayList<AttributeItemSet>();
for (int k = 1; k < this.ITEMSET_SIZE; k++) {
for (int i = 0; i < this._itemSet.size() - 1; i++) {
for (int j = i + 1; j < this._itemSet.size(); j++) {
if (this._itemSet.get(i).differentInLastAttribute(this._itemSet.get(j))) {
AttributeItemSet tempAttrItemSet1 = (AttributeItemSet) this._itemSet.get(i).clone();
System.out.println(tempAttrItemSet1.toString());
AttributeItemSet tempAttrItemSet2 = (AttributeItemSet) this._itemSet.get(j).clone();
System.out.println(tempAttrItemSet2.toString());
tempAttrItemSet1.addCandidateItemSet(
tempAttrItemSet2
.getCandidateItemSet()
.get(tempAttrItemSet2.getCandidateItemSet().size() - 1));
tempAttrItemSet1.resetCoverage();
tempItemSet.add((AttributeItemSet) tempAttrItemSet1);
} else {
// do nothing when all the attributes are similar or when there
// are more than one difference (not only the last) in the two sets
;
}
}
}
this.findFrequentItemSets(tempItemSet);
this._itemSet = (ArrayList<AttributeItemSet>) tempItemSet.clone();
tempItemSet.clear();
}
}
/*
* Count the number of occurrences of attributes combination from the item sets in the ActionDetail
* list
*/
private void countOccurences(
ArrayList<AttributeItemSet> tempItemSet, ArrayList<ActionDetail> details) {
for (int i = 0; i < details.size(); i++) {
ActionDetail ad = details.get(i);
for (int j = 0; j < tempItemSet.size(); j++) {
AttributeItemSet tempAttrItemSet = tempItemSet.get(j);
boolean match = true;
for (int k = 0; k < tempAttrItemSet.getCandidateItemSet().size() && match == true; k++) {
AttributeItem attrItem = tempAttrItemSet.getCandidateItemSet().get(k);
if (attrItem.getAttrName() == "subject")
match = attrItem.getAttrValue().equals(ad.getSubject());
else if (attrItem.getAttrName() == "action")
match = attrItem.getAttrValue().equals(ad.getAction());
else if (attrItem.getAttrName() == "target")
match = attrItem.getAttrValue().equals(ad.getTarget());
else if (attrItem.getAttrName() == "desirability")
match =
attrItem.getAttrValue().equals(ad.getDesirability() >= 0 ? "positive" : "negative");
else if (attrItem.getAttrName() == "praiseworthiness")
match =
attrItem
.getAttrValue()
.equals(ad.getPraiseworthiness() >= 0 ? "positive" : "negative");
else if (attrItem.getAttrName() == "time")
match = attrItem.getAttrValue().equals(ad.getTime().getStrRealTime());
}
// if all attributes and values in the item set match the values in the action detail,
// increase
// the coverage for the item set
if (match) {
tempAttrItemSet.increaseCoverage();
}
}
}
}
