The Second International Planning Competition

The second competition introduced several new domains:

• Blocks The classic blocks-world problem, encoded without an explicit reference to a gripper. This domain has significant goal interaction.
• Job-Schedule A problem involving the machining of parts. This problem exercises the ADL features involving conditional and quantified effects, although it is less complex than the Assembly domain.
• Freecell This is the classic solitaire card game that is widely available as a computer game. The encoding as a STRIPS domain represents a larger problem than most previous benchmarks and includes the awkward addition of an encoded set of integers.
• Miconics Elevator This domain was inspired by the problem of planning an efficient call sequence for an elevator car travelling between floors of a large building. There were several variants, with the most complex including numeric preconditions as well as purely logical constraints. An ADL version offered complex preconditions involving several different connectives and a STRIPS version offered a relatively simple transportation problem.

In addition, the Logistics domain was reused to provide some calibration of performance in comparison with the first competition.