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yap-6.3/packages/ProbLog/problog/utils_learning.yap
Theofrastos Mantadelis d750a5d5a2 update in learning
2010-09-29 18:40:34 +02:00

321 lines
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Prolog

%%% -*- Mode: Prolog; -*-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% $Date: 2010-09-29 13:24:43 +0200 (Wed, 29 Sep 2010) $
% $Revision: 4845 $
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% This file is part of ProbLog
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% Copyright 2008, 2009, 2010
% Katholieke Universiteit Leuven
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% Main authors of this file:
% Bernd Gutmann
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
:- module(utils_learning, [empty_bdd_directory/0,
empty_output_directory/0,
delete_file_silent/1,
slice_n/4]).
% load library modules
:- use_module(library(lists), [append/3, member/2]).
:- use_module(library(system), [delete_file/1, directory_files/2, file_exists/1]).
% load our own modules
:- use_module(os).
:- use_module(flags).
%========================================================================
%=
%=
%========================================================================
empty_bdd_directory :-
problog_flag(bdd_directory,Path),
!,
atom_codes('query_', PF1), % 'query_*'
directory_files(Path,List),
delete_files_with_matching_prefix(List,Path,[PF1]).
empty_bdd_directory :-
throw(error(problog_flag_does_not_exist(bdd_directory))).
%========================================================================
%=
%=
%========================================================================
empty_output_directory :-
problog_flag(output_directory,Path),
!,
concat_path_with_filename(Path,'log.dat',F1),
concat_path_with_filename(Path,'out.dat',F2),
(
file_exists(F1)
->
delete_file_silent(F1);
true
),
(
file_exists(F2)
->
delete_file_silent(F2);
true
),
atom_codes('values_', PF1), % 'values_*_q_*.dat'
atom_codes('factprobs_', PF2), % 'factprobs_*.pl'
atom_codes('input_', PF3), % 'input_*.pl'
atom_codes('trainpredictions_',PF4), % 'trainpredictions_*.pl'
atom_codes('testpredictions_',PF5), % 'testpredictions_*.pl'
atom_codes('predictions_',PF6), % 'predictions_*.pl'
directory_files(Path,List),
delete_files_with_matching_prefix(List,Path,[PF1,PF2,PF3,PF4,PF5,PF6]).
empty_output_directory :-
throw(error(problog_flag_does_not_exist(output_directory))).
%========================================================================
%=
%=
%========================================================================
delete_file_silent(File) :-
file_exists(File),
delete_file(File),
!.
delete_file_silent(_).
%========================================================================
%=
%=
%========================================================================
delete_files_with_matching_prefix([],_,_).
delete_files_with_matching_prefix([Name|T],Path,Prefixes) :-
atom_codes(Name,NameCode),
(
(member(Prefix,Prefixes), append(Prefix,_Suffix,NameCode))
->
(
concat_path_with_filename(Path,Name,F),
delete_file_silent(F)
);
true
),
delete_files_with_matching_prefix(T,Path,Prefixes).
%========================================================================
%= Split a list into the first n elements and the tail
%= +List +Integer -Prefix -Residuum
%========================================================================
slice_n([],_,[],[]) :-
!.
slice_n([H|T],N,[H|T2],T3) :-
N>0,
!,
N2 is N-1,
slice_n(T,N2,T2,T3).
slice_n(L,_,[],L).