Webis at TREC 2016: Tasks, Total Recall, and Open Search Tracks
We give a brief overview of the Webis group's participation in the TREC 2016 Tasks, Total Recall, and Open Search tracks. Our submissions to the Tasks track are similar to our last year's system. In the task understanding subtask of the Tasks track, we use different data sources (ClueWeb12 anchor texts, AOL query log, Wikidata, etc. and APIs (Google, Bing, etc. to retrieve suggestions related to a given query. For the task completion and ad hoc subtask, we combine the results of the Indri search engine for the different related queries identified in the task understanding subtask. Our system for the the Total Recall track also is similar to our last year's idea with some slight changes in the details; we employ a simple SVM baseline with variable batch sizes equipped with a keyqueries step to identify potentially relevant documents. In the Open Search track, we axiomatically re rank a BM25 ordered result list to come up with a final document ranking.
TREC