Revitalize the search function in TwitterManager
Try to implement OnlineLDA with varying vocabulary size, but throws array out of bounds
Move reading of topic data to a helper and implement the usage of a stemming dictionary to reverse the stemming for query expansion
Implement the matching of two topics through the number of same words in the top words
Add new method for reading only the best topic for each word
implement own ParallelTopicModel to be able to initialize with old topic model
Rework search method to return the maximal number of tweets for a search query
Implement rank-biased overlap (RBO) for topic matching
Several implementations: stemming dictionary, three day topic model, refactoring

the refactoring was for query expander to except filePrefix instead of date to have less magic Strings
Implement search with Elastic search

fill index by using tweets from DB not mallet input file
implement a better search
and use tweetobject which know how they can be converted to json
Refactoring of DBManager (renaming method) --> changes in MalletInputFileCreator
Refactoring of DBManager (renaming method) --> changes in OnlineTopicModelBuilder