Pedro Domingos Parag Singla Markov Logic in Infinite Domains. 2007 Probabilistic, Logical and Relational Learning - A Further Synthesis http://drops.dagstuhl.de/opus/volltexte/2008/1381 conf/dagstuhl/2007P7161 db/conf/dagstuhl/P7161.html#DomingosS07