LPG-TD : a Fully Automated Planner for PDDL 2 . 2 Domains

Like the previous version of LPG, the new version is based on a stochastic local search in the space of particular “action graphs” derived from the planning problem specification. In LPG-TD, this graph representation has been extended to deal with the new features of PDDL2.2, as well to improve the management of durative actions and of numerical expressions (already supported by PDDL2.1(Fox & Long 2003)). In the following, we briefly describe the main novelties of LPG-TD, which include some new techniques for planning problems involvingtimed initial literals andderived predicates, and some general improvements of all phases of the planner (pre-processing, search and post-processing).