Nikos Komodakis Nikos Paragios Georgios Tziritas Clustering via LP-based Stabilities. 865-872 2008 NIPS http://books.nips.cc/papers/files/nips21/NIPS2008_0769.pdf conf/nips/2008 db/conf/nips/nips2008.html#KomodakisPT08