Decomposing background topics from keywords by principal component pursuit.

Kerui Min Zhengdong Zhang John Wright Yi Ma Decomposing background topics from keywords by principal component pursuit. 269-278 2010 CIKM http://doi.acm.org/10.1145/1871437.1871475 conf/cikm/2010 db/conf/cikm/cikm2010.html#MinZWM10