Hi researchers,
I have been studying about Natural language generation recently and have come across the ai planning and an auto-solving process called PDDL. It tries to establish a world view (domain) and a problem statement ( plan) and then solves the plan using problem statement and world view. While the idea sounds fascinating, I can see that most of the related works are only before 2010. That's why I want to know whether it is still in use/ actively being developed or it is discarded now in the ai community?