Time-Sensitive Weighting for Microblog Retrieval.
Hao Wu, Hui Min Fang · Text REtrieval Conference · 2011
We report our system and experiments for the realtime Adhoc task in the 2011 MicroBlog track. Our goal is to develop effective technique to retrieve relevant tweets that have been posted recently. In particular, we propose a time-sensitive term weighting strategy that can favor tweets in hot-discussed time and a document length related weighting method that can favor long tweets which are more likely to be interesting. Query expansion technique is also used to further improve the retrieval performance.