TL;DR
This paper examines the limitations of PDDL 2.1 in representing real-world planning problems, highlighting the gap between its design and practical application needs.
Contribution
It analyzes the extent to which PDDL 2.1 supports real planning scenarios and discusses the challenges in extending its expressiveness.
Findings
PDDL 2.1 only partially supports real-world planning complexities.
The language maintains a focus on classical planning models.
Extensions needed for better real-world applicability are identified.
Abstract
PDDL was originally conceived and constructed as a lingua franca for the International Planning Competition. PDDL2.1 embodies a set of extensions intended to support the expression of something closer to real planning problems. This objective has only been partially achieved, due in large part to a deliberate focus on not moving too far from classical planning models and solution methods.
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