@inproceedings {4621,
	title = {Overview of the TREC-2012 Microblog Track},
	booktitle = {Text Retrieval Conference (TREC)},
	year = {2012},
	url = {http://trec.nist.gov/pubs/trec21/papers/MICROBLOG12OVERVIEW.pdf},
	author = {Ian Soboroff and Iadh Ounis and Craig Macdonald and Jimmy Lin}
}
