Peerasak Intarapaiboon Ekawit Nantajeewarawat Thanaruk Theeramunkong Extracting Semantic Frames from Thai Medical-Symptom Phrases with Unknown Boundaries. 390-404 2008 ASWC http://dx.doi.org/10.1007/978-3-540-89704-0_27 conf/aswc/2008 db/conf/aswc/aswc2008.html#IntarapaiboonNT08