53 lines
1.6 KiB
Plaintext
53 lines
1.6 KiB
Plaintext
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x2%
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% ProbLog extension to use an YAP BDD interface module, instead of simplecudd.
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%
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:- use_module(library(trie_sp)).
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:- use_module(library(bdd)).
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:- use_module(library(bhash)).
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problog_kbest_bdd(Goal, K, Prob, ok) :-
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problog_kbest_to_bdd(Goal, K, BDD, MapList),
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bind_maplist(MapList, BoundVars),
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bdd_to_probability_sum_product(BDD, BoundVars, Prob).
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problog_kbest_as_bdd(Goal, K, bdd(Dir, Tree, MapList)) :-
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problog_kbest_to_bdd(Goal, K, BDD, MapList),
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bdd_tree(BDD, bdd(Dir, Tree, _Vars)),
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bdd_close(BDD).
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problog_kbest_to_bdd(Goal, K, BDD, MapList) :-
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problog_flag(first_threshold,InitT),
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init_problog_kbest(InitT),
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problog_control(off,up),
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problog_kbest_id(Goal, K),
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retract(current_kbest(_,ListFound,_NumFound)),
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build_prefixtree(ListFound),
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nb_getval(problog_completed_proofs, Trie_Completed_Proofs),
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trie_to_bdd(Trie_Completed_Proofs, BDD, MapList),
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delete_ptree(Trie_Completed_Proofs).
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problog_fl_bdd(Goal, _) :-
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init_problog_low(0.0),
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problog_control(off, up),
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timer_start(sld_time),
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problog_call(Goal),
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add_solution,
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fail.
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problog_fl_bdd(_,Prob) :-
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timer_stop(sld_time,SLD_Time),
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problog_var_set(sld_time, SLD_Time),
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nb_getval(problog_completed_proofs, Trie_Completed_Proofs),
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tabled_trie_to_bdd(Trie_Completed_Proofs, BDD, MapList),
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bind_maplist(MapList, BoundVars),
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bdd_to_probability_sum_product(BDD, BoundVars, Prob),
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(problog_flag(retain_tables, true) -> retain_tabling; true),
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clear_tabling.
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bind_maplist([], []).
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bind_maplist([Node-_|MapList], [ProbFact|BoundVars]) :-
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get_fact_probability(Node,ProbFact),
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bind_maplist(MapList, BoundVars).
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