Semantics, Web and Mining : Joint International Workshop, EWMF 2005 and KDO 2005, Porto, Portugal, October 3-7, 2005, Revised Selected Papers - Markus Ackermann, Bettina Berendt, Marko Grobelnik, Andreas Hotho, Dunja Mladeni., Giovanni Semeraro, Myra Spiliopoulou, Gerd Stumme, Vojt.ch Svátek, . Maarten Someren ((Lecture Notes in Computer Science))