Author mikko
Recipients mikko
Date 2012-06-05.14:18:24
Attachments: problem1 and problem2 are logically equivalent. 
The only difference is that the goal is given as a ground atom
in problem1 and as a quantification in problem2. 
The causal graph heuristic gives different initial h values
for the two problems.

It seems like goals are hardcoded to be high(est)-level
in CausalGraph::calculate_topological_pseudo_sort 
( in preprocessor) when the causal graph is pruned.
This makes sense, but I think it should also be propagated 
to goal axiom's predecessors to be consistent over different
problem formulations.
This might influence other heuristics using the pruned CG as well.
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hr-domain.pddl mikko, 2012-06-05.14:18:24
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