Nayer M. Wanas Motaz El-Saban Heba Ashour Waleed Ammar Automatic scoring of online discussion posts. 19-26 2008 WICOW http://doi.acm.org/10.1145/1458527.1458534 conf/cikm/2008wicow db/conf/cikm/wicow2008.html#WanasEAA08