HLTCOE at TREC 2014: Microblog and Clinical Decision Support

San Francisco State University at TREC 2014: Clinical Decision Support Track and Microblog Track

The Clinical Decision Support Track in TREC 2014 involved identifying biomedical articles that could assist in answering generic clinical questions. This paper discusses the methodologies adopted by the system, Runsystem2, that we built for answering these medical questions. Runsystem2 operates by translating a narrative of a patient's case report into a list of structured medical concepts whic...

NovaSearch at TREC 2014 Microblog Track: Reranking with Wikipedia Page Views

This paper describes our participation in the TREC 2014 Microblog real-time search task. We investigate whether page views from Wikipedia can be used successfully to estimate relevant time periods for queries. To this end, we use a recently published temporal reranking method by Efron et al. [2], which uses kernel density estimation.

ICTNET at Microblog Track in TREC 2014

HU DB at TREC 2014 Microblog Track

This paper describes our system for the Tweet Timeline Generation (TTG) task of the Microblog track, at the Text Retrieval Conference (TREC) 2014. Intuitively, given a collection of microblog posts (i.e., tweets), and a keyword query Q, the goal is to generate a timeline of related tweets. Such a timeline consists of representative tweets, relevant to Q. In our system we employ query expansion ...

University of Delaware at TREC 2014

This paper describes the work of the Information Retrieval Lab at the University of Delaware (team name “udel”) on TREC 2014 tracks. We participated in five different tracks: Contextual Suggestion, Federated Web, Microblog, Session, and Web.