ECIR 2012: 34th european conference on information retrieval research

Ricardo Baeza-Yates, Mari-Carmen Marcos, Arjen P. de Vries, Hugo Zaragoza, Berkant Barla Cambazoglu, Vanessa Murdock, Alvaro Barreiro, David E. Losada, Ronny Lempel, Fabrizio Silvestri, Mounia Lalmas