public void ExtractHashTags()
{
Hashtable hashtags = new Hashtable();
d.TweetData tData = new d.TweetData();
d.HahstagData hData = new d.HahstagData();
d.TweetHashtagLinkData tweetHashtagData = new d.TweetHashtagLinkData();
d.TwuserHashtagLinkData twuserHashtagData = new d.TwuserHashtagLinkData();
DataTable dt = tData.GetHashTagTweeets();
string hashtagPattern = @"(?<tag>#[^\s]+)";
int counter = 0;
int tweetId, tagId;
string twuserId, text, nohtmltext, tag;
foreach (DataRow dr in dt.Rows)
{
Console.WriteLine("tweet# " + (++counter));
tweetId = Convert.ToInt32(dr[0]);
twuserId = dr[1].ToString();
text = dr[2].ToString();
nohtmltext = dr[3].ToString();
Match matchPattern = Regex.Match(nohtmltext, hashtagPattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);
while (matchPattern.Success)
{
tag = matchPattern.Groups["tag"].ToString().Trim();
tag = normalize(tag);
if (tag != "")
{
if (!hashtags.Contains(tag))
{
tagId = hData.Create(tag);
hashtags.Add(tag, tagId);
}
else
{
tagId = Convert.ToInt32(hashtags[tag]);
}
tweetHashtagData.Create(tweetId, tagId);
twuserHashtagData.Create(twuserId, tagId);
}
matchPattern = matchPattern.NextMatch();
}
}
}
public void Run()
{
DataTable dtFollowees, dtFollowerHashtags, dtFolloweeHashtags;
string followerId, followeeId;
string hashtagId;
Hashtable hashFollowerTags;
int tweetsByFollower, tweetsByFollowee;
d.TwuserData uData = new d.TwuserData();
d.TwuserHashtagLinkData uhData = new d.TwuserHashtagLinkData();
d.HahstagOverlapData htovData = new d.HahstagOverlapData();
DataTable dtTwusers = uData.GetFollowers(0);
int counter = 1;
foreach (DataRow drUser in dtTwusers.Rows)
{
followerId = drUser[0].ToString();
Console.WriteLine("\nprocessing user " + (counter++) + " of " + dtTwusers.Rows.Count);
dtFollowerHashtags = uhData.GetHashtags(followerId);
dtFollowees = uData.GetProcessedFollowees(followerId);
hashFollowerTags = new Hashtable();
foreach (DataRow drTag1 in dtFollowerHashtags.Rows)
{
hashFollowerTags.Add(drTag1[0].ToString(), drTag1[1].ToString()); //load follower's hashtags + their tweet counts into hashtable
}
foreach (DataRow drFollowee in dtFollowees.Rows)
{
followeeId = drFollowee[0].ToString();
dtFolloweeHashtags = uhData.GetHashtags(followeeId);
Console.WriteLine("\tfollowee " + followeeId + "(" + dtFolloweeHashtags.Rows.Count + " hashtags) out of " + dtFollowees.Rows.Count + " followeees");
foreach (DataRow drTag2 in dtFolloweeHashtags.Rows)
{
hashtagId = drTag2[0].ToString();
if (hashFollowerTags.ContainsKey(hashtagId))
{
Console.WriteLine("\t\tadding overlap for tag " + hashtagId);
tweetsByFollower = Convert.ToInt32(hashFollowerTags[hashtagId]);
tweetsByFollowee = Convert.ToInt32(drTag2[1]);
htovData.Create(followerId, followeeId, Convert.ToInt32(hashtagId), tweetsByFollower, tweetsByFollowee);
}
}
}
}
}
