Using the Galago implementation of query likelihood, study the impact of short queries and long queries on effectiveness. Do the parameter settings make a difference ?  Implement the relevance model...

Using the Galago implementation of query likelihood, study the impact of short queries and long queries on effectiveness. Do the parameter settings make a difference ?

 Implement the relevance model approach to pseudo-relevance feedback in Galago. Show it works by generating some expansion terms for queries and document it.