private double getUtility(List<Event> input, List<Event> output) {
int totalInterval = 0;
int sameReleasedInterval = 0;
int sensitiveInterval = 0;
for (int i = 1; i < input.size(); i += 2) {
int st1 = input.get(i - 1).timestamp;
int et1 = input.get(i).timestamp;
if (et1 < st1) System.out.println(">>>>BRETTER");
if (dictionary.isSensitive(input.get(i).state.place, input.get(i).timestamp)) {
sensitiveInterval += (et1 - st1 + 1);
continue;
}
totalInterval += (et1 - st1 + 1);
for (int j = 1; j < output.size(); j += 2) {
int st2 = output.get(j - 1).timestamp;
int et2 = output.get(j).timestamp;
if (input.get(i).state.place.id == output.get(j).state.place.id
&& Math.max(st1, st2) < Math.min(et1, et2)) {
sameReleasedInterval += (Math.min(et1, et2) - Math.max(st1, st2) + 1);
}
}
// System.out.println(sameReleasedInterval+"="+totalInterval);
}
System.out.println(sameReleasedInterval + " : " + totalInterval + " : " + sensitiveInterval);
if (totalInterval == 0 || totalInterval < sameReleasedInterval) return 1;
return (double) sameReleasedInterval
* 1.0
/ totalInterval; // To change body of created methods use File | Settings | File Templates.
}
private boolean isSensitive(State x) {
return dictionary.isSensitive(x.place, x.timeIndex * 30);
}
List<Event> doObfuscation(List<Event> input, boolean isPerfect) {
List<Event> output = new ArrayList<Event>();
Queue<StateNode> Q = new PriorityQueue<StateNode>();
List<Event> altEventList = new ArrayList<Event>();
// System.out.println(input.size());
for (int i = 0; i < input.size(); i++) {
Event event = input.get(i);
for (int j = 0; j < altEventList.size(); j++) {
if (altEventList.get(j).timestamp < output.get(output.size() - 1).timestamp
|| altEventList.get(j).timestamp >= input.get(i).timestamp) continue;
output.add(altEventList.get(j));
}
if (event.type.equals("entry")) {
if (dictionary.isSensitive(event.state.place, event.timestamp)
|| ((i > 0)
&& input.get((i - 1)).state.place.id
!= output.get(output.size() - 1).state.place.id)) {
// System.out.println(":" + event.state.place.id);
if (i == 0)
altEventList =
getAlternativeEventPath(
new State(new Place(1, "1", 0, 0, 100), 0),
0,
R,
M,
DT_MAX,
input,
i,
isPerfect);
else
altEventList =
getAlternativeEventPath(
output.get(output.size() - 1).state,
output.get(output.size() - 1).timestamp,
R,
M,
DT_MAX,
input,
i,
isPerfect);
} else {
output.add(event);
altEventList.clear();
}
} else if (event.type.equals("exit")) {
if (((i > 0) && output.size() > 0 && input.get((i - 1)) != output.get(output.size() - 1))) {
altEventList =
getAlternativeEventPath(
output.get(output.size() - 1).state,
output.get(output.size() - 1).timestamp,
R,
M,
DT_MAX,
input,
i,
isPerfect);
} else {
output.add(event);
}
}
}
return output;
}
