Alfredo Milani Valentino Santucci Clement Leung Optimizing Web Content Presentation: A Online PSO Approach. 26-29 2009 Web Intelligence/IAT Workshops http://dx.doi.org/10.1109/WI-IAT.2009.222 conf/iat/2009w db/conf/iat/iatw2009.html#MilaniSL09