LPG 1.2 with
source code! (September
2003)
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README
file (essential user instructions) of LPG 1.2
Download
LPG-1.2 source code
Download
LPG-1.2 compiled for Linux Mandrake 8.0
Download
LPG-1.2 compiled for Sun OS 5.7
Version 1.2 is an
improvement of 1.1 in
which:
(a) a few minor bugs have been fixed; (b) the plan metric can
be maximized as required in Satellite-Hardnumeric problems (in the
previous
version only minimization was possible); (c) we have improved the
treatment
of "at end" conditions (as described in the paper appeared in the
proceedings of AI*IA-03), as well as of conditions "at start", "over
all"
and "at end" in the computation of reachability information;
(d) some
functions have been rewritten to improve efficiency.
LPG 1.1 (8 January 2003)
Version 1.1 is an improvement of 1.0 in which we have fixed a few minor bugs, improved the temporal quality of the plans, and added a few opitions that can be set by the user (see the end of the README file). While in version 1.0 mutex actions cannot (even partially) overlap, version 1.1 supports partial overlapping of mutex actions, as specified in PDDL 2.1. This and the elimination of a minor bug in the implementation of the heuristic function tend to improve the quality of the plans that are gereneted. The new options, that by default are switched off, allow to (1) set a CPU-time search limit (useful when the system cannot find all solutions requested by the user); (b) reduce the size of the space used by the mutex relations between actions, which are computed at run time instead of being precomputed (useful for very large problems); (c) take the partial overlapping of mutex actions into account during the neighbourhood evaluation (sometimes leads to plans of better quality).
LPG 1.0
LPG 1.0 is a slighltly revised version of
the system that was used
in
the 3rd International Planning Competition.