Walter Daelemans Bart Goethals Katharina Morik Guest Editors' Introduction: Special issue of Selected Papers from ECML PKDD 2008. 1-2 2008 17 Data Min. Knowl. Discov. 1 http://dx.doi.org/10.1007/s10618-008-0113-2 db/journals/datamine/datamine17.html#DaelemansGM08