QCRI @ TREC 2011: Microblog Track
Ali El-Kahki, Kareem Mohamed Darwish · Text REtrieval Conference · 2011
This paper briefly describes the Qatar Computing Research Institute (QCRI) participation in the TREC 2011 Microblog track. The focus of our TREC submissions was on using a generative graphic model to perform query expansion. We trained a model that attempted to predict appropriate hashtags to expand tweets as well as queries. In essence, we used hashtags to represent latent topics in tweets.