package processing.hashtag.social;
import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import cc.mallet.util.FileUtils;
public class SocialStrengthCalculator {
private HashMap<String, HashMap<String, ArrayList<Long>>> mapUserMentionTimestamps;
private HashMap<String, HashMap<String, ArrayList<Long>>> mapUserRetweetTimestamps;
private HashMap<String, HashMap<String, ArrayList<Long>>> mapUserReplyTimestamps;
public SocialStrengthCalculator(String mentionFilename, String retweetFilename, String replyFilename) {
populateUserRelationMap(mentionFilename, retweetFilename, replyFilename);
}
/**
* Populate mention list for users.
*
* @param mentionFilename
* the filename of the mention list of users
**/
private void populateUserMentionMap(String mentionFilename) {
mapUserMentionTimestamps = new HashMap<String, HashMap<String, ArrayList<Long>>>();
ArrayList<RelationItem> relations = getRelationItemList(mentionFilename);
String initUsername = "";
String targetUsername = "";
for (RelationItem item : relations) {
initUsername = item.getInitUser();
targetUsername = item.getTargetUser();
if (!mapUserMentionTimestamps.containsKey(initUsername)) {
mapUserMentionTimestamps.put(initUsername, new HashMap<String, ArrayList<Long>>());
}
if (!mapUserMentionTimestamps.get(initUsername).containsKey(targetUsername)) {
mapUserMentionTimestamps.get(initUsername).put(targetUsername, new ArrayList<Long>());
}
mapUserMentionTimestamps.get(initUsername).get(targetUsername).add(item.getCreatedAt().getTime());
}
}
/**
* Populate retweet list of users.
*
* @param retweetFilename
* the filename of the retweet list of users
*/
private void populateUserRetweetMap(String retweetFilename) {
mapUserRetweetTimestamps = new HashMap<String, HashMap<String, ArrayList<Long>>>();
ArrayList<RelationItem> relations = getRelationItemList(retweetFilename);
String initUsername = "";
String targetUsername = "";
for (RelationItem item : relations) {
initUsername = item.getInitUser();
targetUsername = item.getTargetUser();
if (!mapUserRetweetTimestamps.containsKey(initUsername)) {
mapUserRetweetTimestamps.put(initUsername, new HashMap<String, ArrayList<Long>>());
}
if (!mapUserRetweetTimestamps.get(initUsername).containsKey(targetUsername)) {
mapUserRetweetTimestamps.get(initUsername).put(targetUsername, new ArrayList<Long>());
}
mapUserRetweetTimestamps.get(initUsername).get(targetUsername).add(item.getCreatedAt().getTime());
}
}
/**
* Populate reply list of users.
*
* @param replyFilename
* the filename of the reply list of users
*/
private void populateUserReplyMap(String replyFilename) {
mapUserReplyTimestamps = new HashMap<String, HashMap<String, ArrayList<Long>>>();
ArrayList<RelationItem> relations = getRelationItemList(replyFilename);
String initUsername = "";
String targetUsername = "";
for (RelationItem item : relations) {
initUsername = item.getInitUser();
targetUsername = item.getTargetUser();
if (!mapUserReplyTimestamps.containsKey(initUsername)) {
mapUserReplyTimestamps.put(initUsername, new HashMap<String, ArrayList<Long>>());
}
if (!mapUserReplyTimestamps.get(initUsername).containsKey(targetUsername)) {
mapUserReplyTimestamps.get(initUsername).put(targetUsername, new ArrayList<Long>());
}
mapUserReplyTimestamps.get(initUsername).get(targetUsername).add(item.getCreatedAt().getTime());
}
}
/**
* Populate all the list.
*
* @param mentionFilename
* @param retweetFilename
* @param replyFilename
* the filename
* @return void
*/
private void populateUserRelationMap(String mentionFilename, String retweetFilename, String replyFilename) {
populateUserMentionMap(mentionFilename);
populateUserRetweetMap(retweetFilename);
populateUserReplyMap(replyFilename);
}
/**
* Get relation item list from the filename.
*
* @param filename
* @return return the list of {@link RelationItem}
**/
private ArrayList<RelationItem> getRelationItemList(String filename) {
ArrayList<RelationItem> relationItems = new ArrayList<RelationItem>();
DateFormat formater = new SimpleDateFormat("yyyy-mm-dd hh:mm:ss");
File file = new File(filename);
try {
String[] lines = FileUtils.readFile(file);
for (String line : lines) {
String[] tokens = line.split("\t");
RelationItem relationItem = new RelationItem();
try {
relationItem.setId(Integer.parseInt(tokens[0]));
} catch (NumberFormatException exc) {
System.out.println("error parsing relation id > " + tokens[0]);
}
try {
relationItem.setInitUser(tokens[1]);
} catch (NumberFormatException exc) {
System.out.println("error parsing init user > " + tokens[1]);
}
try {
relationItem.setTargetUser(tokens[2]);
} catch (NumberFormatException exc) {
System.out.println("error parsing target user > " + tokens[2]);
}
try {
relationItem.setTweetId(Long.parseLong(tokens[3]));
} catch (NumberFormatException exc) {
System.out.println("error parsing tweet id> " + tokens[3]);
}
try {
relationItem.setCreatedAt(formater.parse(tokens[4]));
} catch (ParseException e) {
e.printStackTrace();
}
relationItems.add(relationItem);
}
} catch (IOException e) {
e.printStackTrace();
}
return relationItems;
}
/** Get the tag weight based on the userId, friend and weightType.
*
* @param userId
* @param friend
* @param weightType
* @return {@link Double} the weight which id independent of the tag and
* just depend on the relation strength between 2 users.
*/
public double getTagWeight(String userId, String friend, String weightType) {
double weight = 0;
if ("retweet".equals(weightType)) {
if (mapUserRetweetTimestamps.get(userId) != null) {
System.out.println("user timestamp not null >> ");
if (mapUserRetweetTimestamps.get(userId).get(friend) != null) {
weight = mapUserRetweetTimestamps.get(userId).get(friend).size();
System.out.println("weight not zero >> " + weight);
} else {
weight = 0;
}
}
} else if ("mention".equals(weightType)) {
if (mapUserMentionTimestamps.get(userId) != null) {
if (mapUserMentionTimestamps.get(userId).get(friend) != null) {
weight = mapUserMentionTimestamps.get(userId).get(friend).size();
System.out.println("weight not zero >> " + weight);
} else {
weight = 0;
}
}
} else if ("reply".equals(weightType)) {
if (mapUserReplyTimestamps.get(userId) != null) {
if (mapUserReplyTimestamps.get(userId).get(friend) != null) {
weight = mapUserReplyTimestamps.get(userId).get(friend).size();
} else {
weight = 0;
}
}
} else if ("hybrid".equals(weightType)) {
if (mapUserReplyTimestamps.get(userId) != null) {
if (mapUserReplyTimestamps.get(userId).get(friend) != null) {
weight += mapUserReplyTimestamps.get(userId).size();
}
}
if (mapUserMentionTimestamps.get(userId) != null) {
if (mapUserMentionTimestamps.get(userId).get(friend) != null) {
weight += mapUserMentionTimestamps.get(userId).size();
}
}
if (mapUserRetweetTimestamps.get(userId) != null) {
if (mapUserRetweetTimestamps.get(userId).get(friend) != null) {
weight += mapUserRetweetTimestamps.get(userId).size();
}
}
}
return weight;
}
}