@article{Percassi_Scala_Vallati_2022, title={The Power of Reformulation: From Validation to Planning in PDDL+}, volume={32}, url={https://ojs.aaai.org/index.php/ICAPS/article/view/19812}, DOI={10.1609/icaps.v32i1.19812}, abstractNote={PDDL+ allows the formal specification of systems representing mixed discrete-continuous representation, under both discrete and continuous dynamics; this expressiveness is pivotal in real-world applications. An important aspect is the capability of validating plans obtained by planning systems, and assessing their compliance against the domain’s model. Unfortunately, a very limited number of validation tools are capable of dealing with PDDL+ tasks. To overcome this problem, in this work we propose an approach that allows exploiting any domain-independent PDDL+ or PDDL2.1 planning engine for validating PDDL+ plans. We introduce a set of translations that, given a PDDL+ plan and the corresponding PDDL+ task, generate a new PDDL+ or PDDL2.1 whose solvability is bound to the validity of the considered plan. We empirically evaluate the usefulness of the proposed approach on a range of PDDL+ benchmarks under an interpretation of time that can be either continuous (through a PDDL+ translation) or discrete (through a PDDL+ or a PDDL2.1 translation).}, number={1}, journal={Proceedings of the International Conference on Automated Planning and Scheduling}, author={Percassi, Francesco and Scala, Enrico and Vallati, Mauro}, year={2022}, month={Jun.}, pages={288-296} }