Gerhard Heyer Martin Läuter Uwe Quasthoff Thomas Wittig Christian Wolff Learning Relations Using Collocations. 2001 conf/ijcai/2001ol Workshop on Ontology Learning http://SunSITE.Informatik.RWTH-Aachen.DE/Publications/CEUR-WS/Vol-38/IJCAI_2001_WS_Ontologies_Heyer_etal.pdf db/conf/ijcai/ijcai2001ol.html#HeyerLQWW01