Knowledge Discovery, Knowledge Engineering and Knowledge Management 4th International Joint Conference, IC3K 2012, Barcelona, Spain, October 4-7, 2012. Revised Selected Papers - Fred, Ana.; Fred, Ana.; Dietz, Jan L. G.; Dietz, Jan L. G.; Liu, Kecheng.; Liu, Kecheng.; Filipe, Joaquim.; Filipe, Joaquim. (Springer Berlin Heidelberg : Imprint: Springer, 2013)