// some users were only mentioned by others ...
Collection<JTweet> tweets = user.getOwnTweets();
if (tweets.size() > 0) {
TweetDetector extractor = new TweetDetector(tweets);
List<String> tagList = new ArrayList<String>();
for (Entry<String, Integer> entry : extractor.run().getSortedTerms()) {
if (entry.getValue() > termMinFrequency)
tagList.add(entry.getKey());
}
b.field("tag", tagList);