Paper: Structured Event Retrieval over Microblog Archives

ACL ID N12-1083
Title Structured Event Retrieval over Microblog Archives
Venue Annual Conference of the North American Chapter of the Association for Computational Linguistics
Session Main Conference
Year 2012

Microblog streams often contain a consider- able amount of information about local, re- gional, national, and global events. Most ex- isting microblog search capabilities are fo- cused on recent happenings and do not provide the ability to search and explore past events. This paper proposes the problem of structured retrieval of historical event information over microblog archives. Rather than retrieving in- dividual microblog messages in response to an event query, we propose retrieving a ranked list of historical event summaries by distill- ing high quality event representations using a novel temporal query expansion technique. The results of an exploratory study carried out over a large archive of Twitter messages demonstrates both the value of the microblog event retrieval task and the...