diogo/yap-6.3
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

include aggregate preparation in here.

Browse Source
This commit is contained in:
Vitor Santos Costa 2008-11-04 03:31:50 +00:00
parent c81bc96fd0
commit e19a7e6b61
1 changed files with 20 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
CLPBN/clpbn/aggregates.yap
View File

@ -2,6 +2,7 @@
% generate explicit CPTs
%
:- module(clpbn_aggregates, [
check_for_agg_vars/2,
cpt_average/6,
cpt_average/7,
cpt_max/6,
@ -24,10 +25,28 @@
matrix_to_list/2,
matrix_set/3]).
:- use_module(library('clpbn/dists'),
[
dist/4,
get_dist_domain_size/2]).
:- use_module(library('clpbn/matrix_cpt_utils'),
[normalise_CPT_on_lines/3]).
:- use_module(dists, [get_dist_domain_size/2]).
check_for_agg_vars([], []).
check_for_agg_vars([V|Vs0], [V|Vs1]) :-
clpbn:get_atts(V, [key(K), dist(Id,Parents)]), !,
simplify_dist(Id, V, K, Parents, Vs0, Vs00),
check_for_agg_vars(Vs00, Vs1).
check_for_agg_vars([_|Vs0], Vs1) :-
check_for_agg_vars(Vs0, Vs1).
% transform aggregate distribution into tree
simplify_dist(avg(Domain), V, Key, Parents, Vs0, VsF) :- !,
cpt_average([V|Parents], Key, Domain, NewDist, Vs0, VsF),
dist(NewDist, Id, Key, ParentsF),
clpbn:put_atts(V, [dist(Id,ParentsF)]).
simplify_dist(_, _, _, _, Vs0, Vs0).
cpt_average(AllVars, Key, Els0, Tab, Vs, NewVs) :-
cpt_average(AllVars, Key, Els0, 1.0, Tab, Vs, NewVs).