private static List<int[]> getPopularResources(BookmarkReader reader, int count, int trainSize) {
List<int[]> resources = new ArrayList<int[]>();
Map<Integer, Integer> countMap = new LinkedHashMap<Integer, Integer>();
for (int i = 0; i < reader.getResources().size(); i++) {
countMap.put(i, reader.getResourceCounts().get(i));
}
Map<Integer, Integer> sortedCountMap =
new TreeMap<Integer, Integer>(new IntMapComparator(countMap));
sortedCountMap.putAll(countMap);
for (int userID : reader.getUniqueUserListFromTestSet(trainSize)) {
List<Integer> userResources =
UserData.getResourcesFromUser(reader.getUserLines().subList(0, trainSize), userID);
// System.out.println(userResources.size());
List<Integer> resIDs = new ArrayList<Integer>();
int i = 0;
for (Integer key : sortedCountMap.keySet()) {
if (i < count) {
if (!userResources.contains(key)) {
resIDs.add(key);
i++;
}
} else {
break;
}
}
resources.add(Ints.toArray(resIDs));
}
return resources;
}
private static List<int[]> getRandomResources(BookmarkReader reader, int count, int trainSize) {
List<int[]> resources = new ArrayList<int[]>();
int resCount = reader.getResources().size();
for (int userID : reader.getUniqueUserListFromTestSet(trainSize)) {
List<Integer> userResources =
UserData.getResourcesFromUser(reader.getUserLines().subList(0, trainSize), userID);
List<Integer> resIDs = new ArrayList<Integer>();
int i = 0;
for (Integer res : Utilities.getRandomIndices(0, resCount - 1)) {
if (i < count) {
if (!userResources.contains(res)) {
resIDs.add(res);
i++;
}
} else {
break;
}
}
resources.add(Ints.toArray(resIDs));
}
return resources;
}
private static void getStatistics(String dataset, boolean writeAll) {
if (TOPIC_NAME != null) {
dataset += ("_" + TOPIC_NAME);
}
BookmarkReader reader = new BookmarkReader(0, false);
reader.readFile(dataset);
int bookmarks = reader.getBookmarks().size();
System.out.println("Posts: " + bookmarks);
int users = reader.getUsers().size();
System.out.println("Users: " + users);
int resources = reader.getResources().size();
System.out.println("Resources: " + resources);
int tags = reader.getTags().size();
System.out.println("Tags: " + tags);
int tagAssignments = reader.getTagAssignmentsCount();
System.out.println("Tag-Assignments: " + tagAssignments);
int categories = reader.getCategories().size();
System.out.println("Topics: " + categories);
double avgTASPerPost = (double) tagAssignments / bookmarks;
System.out.println("Avg. TAS per post: " + avgTASPerPost);
double avgBookmarksPerUser = (double) bookmarks / users;
System.out.println("Avg. resources/posts per user: "******"Avg. users/posts per resource: " + avgBookmarksPerResource);
if (writeAll) {
try {
getTrainTestSize(dataset);
FileWriter userWriter =
new FileWriter(new File("./data/metrics/" + dataset + "_userStats.txt"));
BufferedWriter userBW = new BufferedWriter(userWriter);
userBW.write("UserID| NoOfResources| NoOfTopics| Topic-Similarity\n");
List<Bookmark> trainList = reader.getBookmarks().subList(0, TRAIN_SIZE);
List<Integer> testUsers = reader.getUniqueUserListFromTestSet(TRAIN_SIZE);
System.out.println();
double avgTopicsPerUser = 0.0;
double avgTopicDiversityPerUser = 0.0;
List<Map<Integer, Double>> userTopics = Utilities.getRelativeTopicMaps(trainList, false);
List<List<Bookmark>> userBookmarks = Utilities.getBookmarks(trainList, false);
for (int userID : testUsers) {
Map<Integer, Double> topicsOfUser = userTopics.get(userID);
double topicDiversityOfUser = Bookmark.getBookmarkDiversity(userBookmarks.get(userID));
userBW.write(
userID
+ "| "
+ reader.getUserCounts().get(userID)
+ "| "
+ topicsOfUser.keySet().size()
+ "| "
+ topicDiversityOfUser
+ "\n");
avgTopicsPerUser += topicsOfUser.keySet().size();
avgTopicDiversityPerUser += topicDiversityOfUser;
}
System.out.println("Avg. topics per user: "******"Avg. topic-similarity per user: "******"Avg. topics per resource: " + avgTopicsPerResource);
userBW.flush();
userBW.close();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
System.out.println();
}