the Graphplan "EBL" discussion

I did a somewhat cursory description of intelligent backtracking and
EBL in the context of Graphplan in the class today. If you want to
read more about it, check out

http://rakaposhi.eas.asu.edu/ijcai-gp-ebl.pdf

(or the much longer http://rakaposhi.eas.asu.edu/kambhampati00a.pdf )

cheers
Rao