Implement a sampling of tweets for evaluation and add expert tweets to the sample
Use a better cutOffPercentage for how many topics do I throw away for a new initialization
Adapt the threshold for how many topics to use for expansion

now seems to fit quite well (bigger => 22.10. do not find much for ebola, smaller => find too much like "ass nigga fuck" topic)
Implement a UrlCollector for specified date
Add search method to ElasticSearchManager for given sample
Implement evaluation of finding expert tweets

but still need to find a good evaluation measure
and add url content to index
Implement the writing of topic inferencer

for the evaluation of the topic model
Implement Url Crawling for one Specific Day and make it repeat its loop until all Urls are crawled
Refactor FileReaderHelper to get filePrefix instead of full FileName

=> the helper holds the constants which say how the suffix should look
Implement usage of urls in elastic search and start implementing evaluation for tm

but urls contents go out of memory
also little refactoring in evaluation of topic based search
Refactor QueryExpander to be able to return topic indices from query expansion
Fix some warnings in UserCrawler
Go on implementing evaluation of topic model

nearly done, but need to evaluate the sampled distributions
Go on implementing evaluation of topic model

nearly done, but need to evaluate the sampled distributions
and add ElasticSearch for only one date