149 lines
3.9 KiB
Prolog
149 lines
3.9 KiB
Prolog
/*******************************************************
|
|
|
|
Interface to Horus Lifted Solvers. Used by:
|
|
- Lifted Variable Elimination
|
|
|
|
********************************************************/
|
|
|
|
:- module(clpbn_horus_lifted,
|
|
[call_horus_lifted_solver/3,
|
|
check_if_horus_lifted_solver_done/1,
|
|
init_horus_lifted_solver/4,
|
|
run_horus_lifted_solver/3,
|
|
finalize_horus_lifted_solver/1
|
|
]).
|
|
|
|
:- use_module(horus,
|
|
[cpp_create_lifted_network/3,
|
|
cpp_set_parfactors_params/2,
|
|
cpp_run_lifted_solver/3,
|
|
cpp_free_lifted_network/1
|
|
]).
|
|
|
|
:- use_module(library('clpbn/display'),
|
|
[clpbn_bind_vals/3]).
|
|
|
|
:- use_module(library('clpbn/dists'),
|
|
[get_dist_params/2]).
|
|
|
|
:- use_module(library(pfl),
|
|
[factor/6,
|
|
skolem/2,
|
|
get_pfl_parameters/2
|
|
]).
|
|
|
|
|
|
call_horus_lifted_solver([[]], _, _) :- !.
|
|
call_horus_lifted_solver([QueryVars], AllVars, Output) :-
|
|
init_horus_lifted_solver(_, AllVars, _, ParfactorList),
|
|
run_horus_lifted_solver([QueryVars], LPs, ParfactorList),
|
|
finalize_horus_lifted_solver(ParfactorList),
|
|
clpbn_bind_vals([QueryVars], LPs, Output).
|
|
|
|
|
|
init_horus_lifted_solver(_, AllAttVars, _, fove(ParfactorList, DistIds)) :-
|
|
get_parfactors(Parfactors),
|
|
get_dist_ids(Parfactors, DistIds0),
|
|
sort(DistIds0, DistIds),
|
|
get_observed_vars(AllAttVars, ObservedVars),
|
|
%writeln(parfactors:Parfactors:'\n'),
|
|
%writeln(evidence:ObservedVars:'\n'),
|
|
cpp_create_lifted_network(Parfactors,ObservedVars,ParfactorList).
|
|
|
|
|
|
:- table get_parfactors/1.
|
|
|
|
%
|
|
% enumerate all parfactors and enumerate their domain as tuples.
|
|
%
|
|
% output is list of pf(
|
|
% Id: an unique number
|
|
% Ks: a list of keys, also known as the pf formula [a(X),b(Y),c(X,Y)]
|
|
% Vs: the list of free variables [X,Y]
|
|
% Phi: the table following usual CLP(BN) convention
|
|
% Tuples: ground bindings for variables in Vs, of the form [fv(x,y)]
|
|
%
|
|
get_parfactors(Factors) :-
|
|
findall(F, is_factor(F), Factors).
|
|
|
|
|
|
is_factor(pf(Id, Ks, Rs, Phi, Tuples)) :-
|
|
factor(_Type, Id, Ks, Vs, Table, Constraints),
|
|
get_ranges(Ks,Rs),
|
|
Table \= avg,
|
|
gen_table(Table, Phi),
|
|
all_tuples(Constraints, Vs, Tuples).
|
|
|
|
|
|
get_ranges([],[]).
|
|
get_ranges(K.Ks, Range.Rs) :- !,
|
|
skolem(K,Domain),
|
|
length(Domain,Range),
|
|
get_ranges(Ks, Rs).
|
|
|
|
|
|
gen_table(Table, Phi) :-
|
|
( is_list(Table)
|
|
->
|
|
Phi = Table
|
|
;
|
|
call(user:Table, Phi)
|
|
).
|
|
|
|
|
|
all_tuples(Constraints, Tuple, Tuples) :-
|
|
setof(Tuple, Constraints^run(Constraints), Tuples).
|
|
|
|
|
|
run([]).
|
|
run(Goal.Constraints) :-
|
|
user:Goal,
|
|
run(Constraints).
|
|
|
|
|
|
get_dist_ids([], []).
|
|
get_dist_ids(pf(Id, _, _, _, _).Parfactors, Id.DistIds) :-
|
|
get_dist_ids(Parfactors, DistIds).
|
|
|
|
|
|
get_observed_vars([], []).
|
|
get_observed_vars(V.AllAttVars, [K:E|ObservedVars]) :-
|
|
clpbn:get_atts(V,[key(K)]),
|
|
( clpbn:get_atts(V,[evidence(E)]) ; pfl:evidence(K,E) ), !,
|
|
get_observed_vars(AllAttVars, ObservedVars).
|
|
get_observed_vars(V.AllAttVars, ObservedVars) :-
|
|
clpbn:get_atts(V,[key(_K)]), !,
|
|
get_observed_vars(AllAttVars, ObservedVars).
|
|
|
|
|
|
get_query_vars([], []).
|
|
get_query_vars(E1.L1, E2.L2) :-
|
|
get_query_vars_2(E1,E2),
|
|
get_query_vars(L1, L2).
|
|
|
|
|
|
get_query_vars_2([], []).
|
|
get_query_vars_2(V.AttVars, [RV|RVs]) :-
|
|
clpbn:get_atts(V,[key(RV)]), !,
|
|
get_query_vars_2(AttVars, RVs).
|
|
|
|
|
|
get_dists_parameters([], []).
|
|
get_dists_parameters([Id|Ids], [dist(Id, Params)|DistsInfo]) :-
|
|
get_pfl_parameters(Id, Params),
|
|
get_dists_parameters(Ids, DistsInfo).
|
|
|
|
|
|
run_horus_lifted_solver(QueryVarsAtts, Solutions, fove(ParfactorList, DistIds)) :-
|
|
get_query_vars(QueryVarsAtts, QueryVars),
|
|
%writeln(queryVars:QueryVars), writeln(''),
|
|
get_dists_parameters(DistIds, DistsParams),
|
|
%writeln(dists:DistsParams), writeln(''),
|
|
cpp_set_parfactors_params(ParfactorList, DistsParams),
|
|
cpp_run_lifted_solver(ParfactorList, QueryVars, Solutions).
|
|
|
|
|
|
finalize_horus_lifted_solver(fove(ParfactorList, _)) :-
|
|
cpp_free_lifted_network(ParfactorList).
|
|
|