Section: Software

FF

Participant : Jörg Hoffmann [correspondant] .

FF is an automatic planning system, taking as input a high-level description of the planning task in the PDDL language (planning domain definition language), and returning a plan for the task. FF was continuously developed by Jörg Hoffmann over a time span of several years (ca. 1999 – 2006), before joining INRIA. FF has convincingly won the international planning competition in the year 2000, and has been one of the most widely used and cited planning systems (around 1000 citations up to now) ever since then. It still is competitive with the state of the art today. There are several different versions, for deterministic planning with Boolean state variables, for deterministic planning with numeric state variables, for non-deterministic planning with no probabilities (all outcomes are assumed to be equally likely), and finally a version tackling a particular variant of probabilistic planning.