Siena's Twitter Information Retrieval System: The 2012 Microblog Track. - Karl Appel; Lauren Mathews; Darren Lim; Sharon G. Small (TREC, 2012)

Siena's Twitter Information Retrieval System: The 2014 Microblog Track. - Timothy LaRock; Lauren Mathews; Matthew Roberts; Darren Lim; Sharon G. Small (TREC, 2014)