slipcover

This commit is contained in:
Fabrizio Riguzzi 2013-09-04 18:58:00 +02:00
parent a405ee4bb0
commit cb304e781c
6 changed files with 17160 additions and 1 deletions

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@ -147,7 +147,8 @@ CPLINT_DOCS=\
CPLINT_LEARNING_PROGRAMS=\
$(CPLINT_SRCDIR)/em \
$(CPLINT_SRCDIR)/rib \
$(CPLINT_SRCDIR)/slipcase
$(CPLINT_SRCDIR)/slipcase \
$(CPLINT_SRCDIR)/slipcover
all: $(SOBJS)
@ -181,6 +182,7 @@ install: all
cp $(CPLINT_SRCDIR)/em/*.pl $(DESTDIR)$(SHAREDIR)/cplint/
cp $(CPLINT_SRCDIR)/rib/*.pl $(DESTDIR)$(SHAREDIR)/cplint/
cp $(CPLINT_SRCDIR)/slipcase/*.pl $(DESTDIR)$(SHAREDIR)/cplint/
cp $(CPLINT_SRCDIR)/slipcover/*.pl $(DESTDIR)$(SHAREDIR)/cplint/
$(INSTALL_PROGRAM) slipcase/bddem.so $(DESTDIR)$(YAPLIBDIR)
installcheck:

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@ -0,0 +1,205 @@
output(advisedby/2).
input(student/1).
input(professor/1).
input(inphase/2).
input(hasposition/2).
input(publication/2).
input(yearsinprogram/2).
input(taughtby/3).
input(ta/3).
input(courselevel/2).
input(tempadvisedby/2).
determination(professor/1,student/1).
determination(professor/1,hasposition/2).
determination(professor/1,publication/2).
determination(professor/1,courselevel/2).
determination(professor/1,inphase/2).
determination(professor/1,advisedby/2).
determination(professor/1,tempadvisedby/2).
determination(professor/1,yearsinprogram/2).
determination(professor/1,taughtby/3).
determination(professor/1,ta/3).
determination(student/1,professor/1).
determination(student/1,hasposition/2).
determination(student/1,publication/2).
determination(student/1,courselevel/2).
determination(student/1,inphase/2).
determination(student/1,advisedby/2).
determination(student/1,tempadvisedby/2).
determination(student/1,yearsinprogram/2).
determination(student/1,taughtby/3).
determination(student/1,ta/3).
determination(hasposition/2,professor/1).
determination(hasposition/2,student/1).
determination(hasposition/2,publication/2).
determination(hasposition/2,courselevel/2).
determination(hasposition/2,inphase/2).
determination(hasposition/2,advisedby/2).
determination(hasposition/2,tempadvisedby/2).
determination(hasposition/2,yearsinprogram/2).
determination(hasposition/2,taughtby/3).
determination(hasposition/2,ta/3).
determination(inphase/2,professor/1).
determination(inphase/2,student/1).
determination(inphase/2,hasposition/2).
determination(inphase/2,publication/2).
determination(inphase/2,courselevel/2).
determination(inphase/2,advisedby/2).
determination(inphase/2,tempadvisedby/2).
determination(inphase/2,yearsinprogram/2).
determination(inphase/2,taughtby/3).
determination(inphase/2,ta/3).
determination(taughtby/3,professor/1).
determination(taughtby/3,student/1).
determination(taughtby/3,hasposition/2).
determination(taughtby/3,publication/2).
determination(taughtby/3,courselevel/2).
determination(taughtby/3,inphase/2).
determination(taughtby/3,advisedby/2).
determination(taughtby/3,tempadvisedby/2).
determination(taughtby/3,yearsinprogram/2).
determination(taughtby/3,ta/3).
determination(advisedby/2,professor/1).
determination(advisedby/2,student/1).
determination(advisedby/2,hasposition/2).
determination(advisedby/2,publication/2).
determination(advisedby/2,courselevel/2).
determination(advisedby/2,inphase/2).
determination(advisedby/2,yearsinprogram/2).
determination(advisedby/2,taughtby/3).
determination(advisedby/2,ta/3).
determination(tempadvisedby/2,professor/1).
determination(tempadvisedby/2,student/1).
determination(tempadvisedby/2,hasposition/2).
determination(tempadvisedby/2,publication/2).
determination(tempadvisedby/2,courselevel/2).
determination(tempadvisedby/2,inphase/2).
determination(tempadvisedby/2,yearsinprogram/2).
determination(tempadvisedby/2,taughtby/3).
determination(tempadvisedby/2,ta/3).
determination(ta/3,professor/1).
determination(ta/3,student/1).
determination(ta/3,hasposition/2).
determination(ta/3,publication/2).
determination(ta/3,courselevel/2).
determination(ta/3,inphase/2).
determination(ta/3,advisedby/2).
determination(ta/3,tempadvisedby/2).
determination(ta/3,yearsinprogram/2).
determination(ta/3,taughtby/3).
determination(yearsinprogram/2,professor/1).
determination(yearsinprogram/2,student/1).
determination(yearsinprogram/2,hasposition/2).
determination(yearsinprogram/2,publication/2).
determination(yearsinprogram/2,courselevel/2).
determination(yearsinprogram/2,inphase/2).
determination(yearsinprogram/2,advisedby/2).
determination(yearsinprogram/2,tempadvisedby/2).
determination(yearsinprogram/2,taughtby/3).
determination(yearsinprogram/2,ta/3).
determination(courselevel/2,professor/1).
determination(courselevel/2,student/1).
determination(courselevel/2,hasposition/2).
determination(courselevel/2,publication/2).
determination(courselevel/2,inphase/2).
determination(courselevel/2,advisedby/2).
determination(courselevel/2,tempadvisedby/2).
determination(courselevel/2,yearsinprogram/2).
determination(courselevel/2,taughtby/3).
determination(courselevel/2,ta/3).
determination(publication/2,professor/1).
determination(publication/2,student/1).
determination(publication/2,hasposition/2).
determination(publication/2,courselevel/2).
determination(publication/2,inphase/2).
determination(publication/2,advisedby/2).
determination(publication/2,tempadvisedby/2).
determination(publication/2,yearsinprogram/2).
determination(publication/2,taughtby/3).
determination(publication/2,ta/3).
modeh(*,professor(+person)).
modeh(*,student(+person)).
modeh(*,hasposition(+person, faculty)).
modeh(*,inphase(+person, pre_quals)).
modeh(*,taughtby(+course, +person, +quarter)).
modeh(*,advisedby(+person,+person)).
modeh(*,tempadvisedby(+person,+person)).
modeh(*,ta(+course,+person,+quarter)).
modeh(*,courselevel(+course,#level)).
modeh(*,yearsinprogram(+person,#year)).
modeh(*,[advisedby(+person,+person),tempadvisedby(+person,+person)],[advisedby(A,B),tempadvisedby(A,B)],[professor/1,student/1,hasposition/2,inphase/2,publication/2,taughtby/3,ta/3,courselevel/2,yearsinprogram/2]).
modeh(*,[student(+person),professor(+person)],[student(P),professor(P)],[hasposition/2,inphase/2,taughtby/3,ta/3,courselevel/2,yearsinprogram/2,advisedby/2,tempadvisedby/2,publication/2]).
modeh(*,
[hasposition(+person, faculty),hasposition(+person, faculty_affiliate),hasposition(+person, faculty_adjunct),hasposition(+person, faculty_emeritus),hasposition(+person, faculty_visiting)],
[hasposition(P, faculty),hasposition(P, faculty_affiliate),hasposition(P, faculty_adjunct),hasposition(P, faculty_emeritus),hasposition(P, faculty_visiting)],
[professor/1,student/1,inphase/2,taughtby/3,ta/3,courselevel/2,yearsinprogram/2,advisedby/2,tempadvisedby/2]).
modeh(*,
[yearsinprogram(+person, year_1) , ta(+course, +person, +quarter)],
[yearsinprogram(P, year_1) , ta(_C, P, _Q)],
[professor/1,student/1,inphase/2,taughtby/3,courselevel/2,advisedby/2,tempadvisedby/2,hasposition/2]).
modeh(*,[yearsinprogram(+person, year_1) ,yearsinprogram(+person, year_2)],[yearsinprogram(P, year_1) ,yearsinprogram(P, year_2)],
[professor/1,student/1,inphase/2,taughtby/3,ta/3,courselevel/2,advisedby/2,tempadvisedby/2,hasposition/2]).
modeh(*,[ inphase(+person,pre_quals) , inphase(+person,post_quals) , inphase(+person,post_generals)],[ inphase(P,pre_quals) , inphase(P,post_quals) , inphase(P,post_generals)],
[professor/1,student/1,taughtby/3,ta/3,courselevel/2,yearsinprogram/2,advisedby/2,tempadvisedby/2,hasposition/2]).
modeh(*,[courselevel(+course,level_100) , advisedby(+person,+person)],[courselevel(_C,level_100) , advisedby(_S,_P)],
[professor/1,student/1,inphase/2,taughtby/3,ta/3,yearsinprogram/2,tempadvisedby/2,hasposition/2,publication/2]).
modeh(*,[ta(+course,+person,+quarter) , courselevel(+course,level_100)],[ta(C,_P,_Q) , courselevel(C,level_100)],
[professor/1,student/1,inphase/2,taughtby/3,yearsinprogram/2,advisedby/2,tempadvisedby/2,hasposition/2,publication/2]).
modeh(*,[taughtby(+course,+person,+quarter) , courselevel(+course,level_100)],[taughtby(C,_P,_Q) , courselevel(C,level_100)],
[professor/1,student/1,inphase/2,ta/3,yearsinprogram/2,advisedby/2,tempadvisedby/2,hasposition/2,publication/2]).
modeb(*,publication(-title, +person)).
modeb(*,publication(+title, -person)).
modeb(*,professor(+person)).
modeb(*,student(+person)).
modeb(*,taughtby(-course, +person, -quarter)).
modeb(*,taughtby(+course, -person, -quarter)).
modeb(*,ta(+course, -person, +quarter)).
modeb(*,ta(-course, +person, -quarter)).
modeb(*,hasposition(+person, -position)).
modeb(*,hasposition(+person, #position)).
modeb(*,inphase(+person, -phase)).
modeb(*,inphase(+person, #phase)).
modeb(*,tempadvisedby(+person, -person)).
modeb(*,tempadvisedby(-person, +person)).
modeb(*,yearsinprogram(+person, -year)).
modeb(*,courselevel(+course, #level)).
lookahead(ta(_A,_B,_C),[taughtby(_A,_D,_C)]).
lookahead(publication(_A,_B),[publication(_A,_C), professor(_B),student(_C)]).

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/*
EMBLEM and SLIPCASE
Copyright (c) 2011, Fabrizio Riguzzi, Nicola di Mauro and Elena Bellodi
*/
:- use_module(library(terms)).
:- use_module(library(lists)).
:- set_prolog_flag(discontiguous_warnings,on).
:- set_prolog_flag(single_var_warnings,on).
theory_revisions_op(Theory,TheoryRevs):-
setof(RevOp, Theory^revise_theory(Theory,RevOp), TheoryRevs),!.
theory_revisions_op(_Theory,[]).
theory_revisions(Theory,TheoryRevs):-
theory_revisions_op(Theory,TheoryRevs1),
apply_operators(TheoryRevs1,Theory,TheoryRevs).
apply_operators([],_Theory,[]).
apply_operators([add(Rule)|RestOps],Theory,[NewTheory|RestTheory]) :-
append(Theory, [Rule], NewTheory),
% nl,write(NewTheory),
apply_operators(RestOps,Theory,RestTheory).
apply_operators([add_body(Rule1,Rule2,_A)|RestOps],Theory,[NewTheory|RestTheory]) :-
delete_matching(Theory,Rule1,Theory1),
append(Theory1, [Rule2], NewTheory),
% nl,write(NewTheory),
apply_operators(RestOps,Theory,RestTheory).
apply_operators([remove_body(Rule1,Rule2,_A)|RestOps],Theory,[NewTheory|RestTheory]) :-
delete_matching(Theory,Rule1,Theory1),
append(Theory1, [Rule2], NewTheory),
% nl,write(NewTheory),
apply_operators(RestOps,Theory,RestTheory).
apply_operators([add_head(Rule1,Rule2,_A)|RestOps],Theory,[NewTheory|RestTheory]) :-
delete_matching(Theory,Rule1,Theory1),
append(Theory1, [Rule2], NewTheory),
% nl,write(NewTheory),
apply_operators(RestOps,Theory,RestTheory).
apply_operators([remove_head(Rule1,Rule2,_A)|RestOps],Theory,[NewTheory|RestTheory]) :-
delete_matching(Theory,Rule1,Theory1),
append(Theory1, [Rule2], NewTheory),
% nl,write(NewTheory),
apply_operators(RestOps,Theory,RestTheory).
apply_operators([remove(Rule)|RestOps],Theory,[NewTheory|RestTheory]) :-
delete_matching(Theory,Rule,NewTheory),
% nl,write(NewTheory),
apply_operators(RestOps,Theory,RestTheory).
revise_theory(Theory,Ref):-
specialize_theory(Theory,Ref).
revise_theory(Theory,Ref):-
generalize_theory(Theory,Ref).
generalize_theory(Theory,Ref):-
Theory \== [],
choose_rule(Theory,Rule),
generalize_rule(Rule,Ref).
generalize_theory(Theory,Ref):-
length(Theory,LT),
setting(max_rules,MR),
LT<MR,
add_rule(Ref).
generalize_rule(Rule,Ref):-
generalize_head(Rule,Ref).
generalize_rule(Rule,Ref):-
generalize_body(Rule,Ref).
add_rule(add(rule(ID,Head,[],Lits))):-
setting(specialization,bottom),!,
database(DB),
sample(1,DB,[M]),
get_head_atoms(O),
member(A,O),
functor(A,F,N),
functor(F1,F,N),
F1=..[F|Arg],
Pred1=..[F,M|Arg],
A=..[F|ArgM],
keep_const(ArgM,Arg),
findall((A,Pred1),call(Pred1),L),
sample(1,L,LH),
generate_body(LH,[rule(ID,Head,[],Lits)]).
add_rule(add(rule(ID,Head,[],true))):-
findall(HL , modeh(_,HL), HLS),
length(HLS,L),
L1 is L+1,
P is 1/L1,
generate_head(HLS,P,Head),
get_next_rule_number(ID).
generate_head([H|_T],_P,[H1:0.5,'':0.5]):-
H=..[Pred|Args],
length(Args,LA),
length(Args1,LA),
H1=..[Pred|Args1].
generate_head([_H|T],P,Head):-
generate_head(T,P,Head).
generalize_head(Rule,Ref):-
Rule = rule(ID,LH,BL),
generalize_head1(LH,LH1,NewAt),
Ref = add_head(Rule,rule(ID,LH1,BL),NewAt).
generalize_head1(LH,LH1,NH):-
findall(HL , modeh(_,HL), HLS),
generalize_head2(HLS,LH,LH1,NH).
generalize_head2([X|_R],LH,LH1,PH) :-
X =.. [P|A],
length(A,LA),
length(A1,LA),
PH =.. [P|A1],
\+ member(PH:_, LH),
(setting(new_head_atoms_zero_prob,true)->
delete_matching(LH,'':PNull,LH0),
append(LH0,[PH:0.0,'':PNull],LH1)
;
length(LH,NH),
add_to_head(LH,NH,PH,LH1)
).
generalize_head2([_X|R],LH,LH1) :-
generalize_head2(R,LH,LH1).
add_to_head(['':PN],NH,At,[At:PA,'':PN1]):-!,
PN1 is PN*NH/(NH+1),
PA is 1/(NH+1).
add_to_head([H:PH|T],NH,At,[H:PH1|T1]):-
PH1 is PH*NH/(NH+1),
add_to_head(T,NH,At,T1).
get_module_var(LH,Module):-
member(H:_,LH),!,
H=..[_F,Module|_].
generalize_body(Rule,Ref):-
Rule = rule(ID,LH,BL),
delete_one(BL,BL1,A),
remove_prob(LH,LH1),
delete(LH1,'',LH2),
linked_clause(BL1,LH2),
Ref = remove_body(Rule,rule(ID,LH,BL1),A).
specialize_theory(Theory,Ref):-
Theory \== [],
choose_rule(Theory,Rule),
specialize_rule(Rule,SpecRule,Lit),
Ref = add_body(Rule,SpecRule,Lit).
%used by cycle_clauses in slipcover.pl
specialize_rule(Rule,SpecRule,Lit):-
setting(specialization,bottom),
Rule = rule(ID,LH,BL,Lits),
delete_one(Lits,RLits,Lit),
\+ lookahead_cons(Lit,_),
\+ lookahead_cons_var(Lit,_),
\+ member_eq(Lit,BL),
append(BL,[Lit],BL1),
remove_prob(LH,LH1),
delete(LH1,'',LH2),
append(LH2,BL1,ALL2),
dv(LH2,BL1,DList), %-DList: list of couples (variable,depth)
extract_fancy_vars(ALL2,Vars1),
length(Vars1,NV),
setting(max_var,MV),
NV=<MV,
linked_clause(BL1,LH2),
setting(maxdepth_var,MD),
exceed_depth(DList,MD),
\+ banned_clause(LH2,BL1),
SpecRule=rule(ID,LH,BL1,RLits).
specialize_rule(Rule,SpecRule,Lit):-
setting(specialization,bottom),
Rule = rule(ID,LH,BL,Lits),
delete_one(Lits,RLits,Lit),
\+ member_eq(Lit,BL),
append(BL,[Lit],BL0),
\+lookahead_cons_var(Lit,_),
(lookahead(Lit,LLit1);lookahead_cons(Lit,LLit1)),
copy_term(LLit1,LLit2),
specialize_rule_la_bot(LLit2,RLits,RLits1,BL0,BL1),
remove_prob(LH,LH1),
delete(LH1,'',LH2),
append(LH2,BL1,ALL2),
dv(LH2,BL1,DList),
extract_fancy_vars(ALL2,Vars1),
length(Vars1,NV),
setting(max_var,MV),
NV=<MV,
linked_clause(BL1,LH2),
setting(maxdepth_var,MD),
exceed_depth(DList,MD),
\+ banned_clause(LH2,BL1),
SpecRule=rule(ID,LH,BL1,RLits1).
specialize_rule(Rule,SpecRule,Lit):-
setting(specialization,bottom),
Rule = rule(ID,LH,BL,Lits),
delete_one(Lits,RLits,Lit),
\+ member_eq(Lit,BL),
append(BL,[Lit],BL0),
lookahead_cons_var(Lit,LLit2),
specialize_rule_la_bot(LLit2,RLits,_RLits1,BL0,BL1),
remove_prob(LH,LH1),
delete(LH1,'',LH2),
append(LH2,BL1,ALL2),
dv(LH2,BL1,DList),
extract_fancy_vars(ALL2,Vars1),
length(Vars1,NV),
setting(max_var,MV),
NV=<MV,
linked_clause(BL1,LH2),
setting(maxdepth_var,MD),
exceed_depth(DList,MD),
\+ banned_clause(LH2,BL1),
SpecRule=rule(ID,LH,BL1,[]).
specialize_rule(Rule,SpecRule,Lit):-
setting(specialization,mode),%!,
findall(BL , modeb(_,BL), BLS),
specialize_rule(BLS,Rule,SpecRule,Lit).
%specializes the clause's head
specialize_rule(rule(ID,LH,BL,Lits),rule(ID,LH2,BL,Lits),Lit):-
length(LH,L),
L>2,
delete_one(LH,LH1,Lit), %deletes Lit
Lit\=' ',
update_head1(LH1,L-1,LH2). %updates parameters
update_head1([],_N,[]):-!.
update_head1([H:_P|T],N,[H:P|T1]):-
P is 1/N,
update_head1(T,N,T1).
write_list([A]):-!,
format("\t~p.~n~n",[A]).
write_list([A|T]):-
format("\t~p,",[A]),
write_list(T).
banned_clause(H,B):-
numbervars((H,B),0,_N),
banned(H2,B2),
mysublist(H2,H),
mysublist(B2,B).
mysublist([],_).
mysublist([H|T],L):-
member(H,L),
mysublist(T,L).
check_ref(H,B):-
copy_term((H,B),(H1,B1)),
numbervars((H1,B1),0,_N),
(ref(H1,B1)->
fail
;
assert(ref(H1,B1))
).
specialize_rule([Lit|_RLit],Rule,SpecRul,SLit):-
Rule = rule(ID,LH,BL,true),
remove_prob(LH,LH1),
append(LH1,BL,ALL),
specialize_rule1(Lit,ALL,SLit),
append(BL,[SLit],BL1),
(lookahead(SLit,LLit1);lookahead_cons(SLit,LLit1)),
specialize_rule_la(LLit1,LH1,BL1,BL2),
append(LH1,BL2,ALL2),
extract_fancy_vars(ALL2,Vars1),
length(Vars1,NV),
setting(max_var,MV),
NV=<MV,
SpecRul = rule(ID,LH,BL2,true).
specialize_rule([Lit|_RLit],Rule,SpecRul,SLit):-
Rule = rule(ID,LH,BL,true),
remove_prob(LH,LH1),
append(LH1,BL,ALL),
specialize_rule1(Lit,ALL,SLit),
\+ lookahead_cons(SLit,_),
append(BL,[SLit],BL1),
append(LH1,BL1,ALL1),
extract_fancy_vars(ALL1,Vars1),
length(Vars1,NV),
setting(max_var,MV),
NV=<MV,
SpecRul = rule(ID,LH,BL1,true).
specialize_rule([_|RLit],Rule,SpecRul,Lit):-
specialize_rule(RLit,Rule,SpecRul,Lit).
specialize_rule_la([],_LH1,BL1,BL1).
specialize_rule_la([Lit1|T],LH1,BL1,BL3):-
copy_term(Lit1,Lit2),
modeb(_,Lit2),
append(LH1,BL1,ALL1),
specialize_rule1(Lit2,ALL1,SLit1),
append(BL1,[SLit1],BL2),
specialize_rule_la(T,LH1,BL2,BL3).
specialize_rule_la_bot([],Bot,Bot,BL,BL).
specialize_rule_la_bot([Lit|T],Bot0,Bot,BL1,BL3):-
delete_one(Bot0,Bot1,Lit),
\+ member_eq(Lit,BL1),
append(BL1,[Lit],BL2),
specialize_rule_la_bot(T,Bot1,Bot,BL2,BL3).
remove_prob(['':_P],[]):-!.
remove_prob([X:_|R],[X|R1]):-
remove_prob(R,R1).
specialize_rule1(Lit,Lits,SpecLit):-
Lit =.. [Pred|Args],
exctract_type_vars(Lits,TypeVars0),
remove_duplicates(TypeVars0,TypeVars),
take_var_args(Args,TypeVars,Args1),
SpecLit =.. [Pred|Args1],
\+ member_eq(SpecLit,Lits).
convert_to_input_vars([],[]):-!.
convert_to_input_vars([+T|RT],[+T|RT1]):-
!,
convert_to_input_vars(RT,RT1).
convert_to_input_vars([-T|RT],[+T|RT1]):-
convert_to_input_vars(RT,RT1).
member_eq(X,[Y|_List]) :-
X == Y.
member_eq(X,[_|List]) :-
member_eq(X,List).
remove_eq(X,[Y|R],R):-
X == Y,
!.
remove_eq(X,[_|R],R1):-
remove_eq(X,R,R1).
linked_clause(X):-
linked_clause(X,[]).
linked_clause([],_).
linked_clause([L|R],PrevLits):-
term_variables(PrevLits,PrevVars),
input_variables(L,InputVars),
linked(InputVars,PrevVars),!,
linked_clause(R,[L|PrevLits]).
linked([],_).
linked([X|R],L) :-
member_eq(X,L),
!,
linked(R,L).
input_variables(\+ LitM,InputVars):-
!,
LitM=..[P|Args],
length(Args,LA),
length(Args1,LA),
Lit1=..[P|Args1],
copy_term(LitM,Lit0),
modeb(_,Lit1),
Lit1 =.. [P|Args1],
convert_to_input_vars(Args1,Args2),
Lit2 =.. [P|Args2],
input_vars(Lit0,Lit2,InputVars).
input_variables(LitM,InputVars):-
LitM=..[P|Args],
length(Args,LA),
length(Args1,LA),
Lit1=..[P|Args1],
modeb(_,Lit1),
input_vars(LitM,Lit1,InputVars).
input_variables(LitM,InputVars):-
LitM=..[P|Args],
length(Args,LA),
length(Args1,LA),
Lit1=..[P|Args1],
modeh(_,Lit1),
input_vars(LitM,Lit1,InputVars).
input_vars(Lit,Lit1,InputVars):-
Lit =.. [_|Vars],
Lit1 =.. [_|Types],
input_vars1(Vars,Types,InputVars).
input_vars1([],_,[]).
input_vars1([V|RV],[+_T|RT],[V|RV1]):-
!,
input_vars1(RV,RT,RV1).
input_vars1([_V|RV],[_|RT],RV1):-
input_vars1(RV,RT,RV1).
exctract_type_vars([],[]).
exctract_type_vars([Lit|RestLit],TypeVars):-
Lit =.. [Pred|Args],
length(Args,L),
length(Args1,L),
Lit1 =.. [Pred|Args1],
take_mode(Lit1),
type_vars(Args,Args1,Types),
exctract_type_vars(RestLit,TypeVars0),
!,
append(Types,TypeVars0,TypeVars).
take_mode(Lit):-
modeh(_,Lit),!.
take_mode(Lit):-
modeb(_,Lit),!.
take_mode(Lit):-
mode(_,Lit),!.
type_vars([],[],[]).
type_vars([V|RV],[+T|RT],[V=T|RTV]):-
!,
type_vars(RV,RT,RTV).
type_vars([V|RV],[-T|RT],[V=T|RTV]):-atom(T),!,
type_vars(RV,RT,RTV).
type_vars([_V|RV],[_T|RT],RTV):-
type_vars(RV,RT,RTV).
take_var_args([],_,[]).
take_var_args([+T|RT],TypeVars,[V|RV]):-
!,
member(V=T,TypeVars),
take_var_args(RT,TypeVars,RV).
take_var_args([-T|RT],TypeVars,[_V|RV]):-
atom(T),
take_var_args(RT,TypeVars,RV).
take_var_args([-T|RT],TypeVars,[V|RV]):-
member(V=T,TypeVars),
take_var_args(RT,TypeVars,RV).
take_var_args([T|RT],TypeVars,[T|RV]):-
T\= + _,(T\= - _; T= - A,number(A)),
take_var_args(RT,TypeVars,RV).
choose_rule(Theory,Rule):-
member(Rule,Theory).
add_rule(Theory,add(rule(ID,H,[],true))):-
new_id(ID),
findall(HL , modeh(_,HL), HLS),
length(HLS,NH),
P is 1/(NH+1),
add_probs(HLS,H,P),
\+ member(rule(_,H,[],true),Theory).
add_rule(Theory,TheoryGen):-
findall(HL , modeh(_,HL), HLS),
add_rule(HLS,Theory,TheoryGen).
add_rule([X|_R],Theory,TheoryGen) :-
new_id(ID),
X =.. [P|A],
length(A,LA),
length(A1,LA),
PH =.. [P|A1],
TheoryGen = add(rule(ID,[PH:0.5,'':0.5],[],true)),
\+ member(rule(_,[PH:_,'':_],[],true),Theory).
add_rule([_X|R],Theory,TheoryGen) :-
add_rule(R,Theory,TheoryGen).
add_probs([],['':P],P):-!.
add_probs([H|T],[H:P|T1],P):-
add_probs(T,T1,P).
extract_fancy_vars(List,Vars):-
term_variables(List,Vars0),
fancy_vars(Vars0,1,Vars).
fancy_vars([],_,[]).
fancy_vars([X|R],N,[NN2=X|R1]):-
name(N,NN),
append([86],NN,NN1),
name(NN2,NN1),
N1 is N + 1,
fancy_vars(R,N1,R1).
delete_one([X|R],R,X).
delete_one([X|R],[X|R1],D):-
delete_one(R,R1,D).
remove_last([_X],[]) :-
!.
remove_last([X|R],[X|R1]):-
remove_last(R,R1).
delete_matching([],_El,[]).
delete_matching([El|T],El,T1):-!,
delete_matching(T,El,T1).
delete_matching([H|T],El,[H|T1]):-
delete_matching(T,El,T1).
%Computation of the depth of the variables in the clause's head/body
dv(H,B,DV1):- %DV1: returns a list of couples (Variable, Max depth)
term_variables(H,V),
head_depth(V,DV0),
findall((MD-DV),var_depth(B,DV0,DV,0,MD),LDs),
get_max(LDs,-1,-,DV1).
input_variables_b(LitM,InputVars):-
LitM=..[P|Args],
length(Args,LA),
length(Args1,LA),
Lit1=..[P|Args1],
modeb(_,Lit1),
input_vars(LitM,Lit1,InputVars).
%associates depth 0 to each variable in the clause's head
head_depth([],[]).
head_depth([V|R],[[V,0]|R1]):-
head_depth(R,R1).
%associates a depth to each variable in the clause's body
var_depth([],PrevDs1,PrevDs1,MD,MD):-!.
var_depth([L|R],PrevDs,PrevDs1,_MD,MD):- %L = a body literal, MD = maximum depth set by the user
input_variables_b(L,InputVars),
term_variables(L, BodyAtomVars),
output_vars(BodyAtomVars,InputVars,OutputVars),
depth_InputVars(InputVars,PrevDs,0,MaxD), %MaxD: maximum depth of the input variables in the body literal
D is MaxD+1,
compute_depth(OutputVars,D,PrevDs,PrevDs0), %Computes the depth for the output variables in the body literal
var_depth(R,PrevDs0,PrevDs1,D,MD).
get_max([],_,Ds,Ds).
get_max([(MD-DsH)|T],MD0,_Ds0,Ds):-
MD>MD0,!,
get_max(T,MD,DsH,Ds).
get_max([_H|T],MD,Ds0,Ds):-
get_max(T,MD,Ds0,Ds).
output_vars(OutVars,[],OutVars):-!.
output_vars(BodyAtomVars,[I|InputVars],OutVars):-
delete(BodyAtomVars, I, Residue),
output_vars(Residue,InputVars, OutVars).
% returns D as the maximum depth of the variables in the list (first argument)
depth_InputVars([],_,D,D).
depth_InputVars([I|Input],PrevDs,D0,D):-
member_l(PrevDs,I,MD),
(MD>D0->
D1=MD
;
D1=D0
),
depth_InputVars(Input,PrevDs,D1,D).
member_l([[L,D]|_P],I,D):-
I==L,!.
member_l([_|P],I,D):-
member_l(P,I,D).
compute_depth([],_,PD,PD):-!.
compute_depth([O|Output],D,PD,RestO):-
member_l(PD,O,_),!,
compute_depth(Output,D,PD,RestO).
compute_depth([O|Output],D,PD,[[O,D]|RestO]):-
compute_depth(Output,D,PD,RestO).
%checks if a variable's depth exceeds the setting
exceed_depth([],_):-!.
exceed_depth([H|T],MD):-
nth1(2,H,Dep),
Dep<MD, %setting(maxdepth_var,MD),
exceed_depth(T,MD).

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