Suzan Verberne Maarten van der Heijden Max Hinne Maya Sappelli Saskia Koldijk Eduard Hoenkamp Wessel Kraaij Reliability and Validity of Query Intent Assessments. 32-33 2013 DIR https://ceur-ws.org/Vol-986/paper_18.pdf conf/dir/2013 db/conf/dir/dir2013.html#VerberneHHSKHK13