File size: 5,502 Bytes
fd49381 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | #!/usr/bin/env perl
#
# This file is part of moses. Its use is licensed under the GNU Lesser General
# Public License version 2.1 or, at your option, any later version.
use warnings;
use strict;
use utf8;
use Getopt::Long "GetOptions";
use FindBin qw($RealBin);
use IO::Handle;
use File::Basename;
binmode(STDIN, ':utf8');
binmode(STDOUT, ':utf8');
binmode(STDERR, ':utf8');
my $OUT_DIR = "/tmp/Transliteration-Phrase-Table.$$";
my ($MOSES_SRC_DIR,$TRANSLIT_MODEL,$OOV_FILE,$EXTERNAL_BIN_DIR, $INPUT_EXTENSION, $OUTPUT_EXTENSION);
die("ERROR: wrong syntax when invoking train-transliteration-PT.pl")
unless &GetOptions('moses-src-dir=s' => \$MOSES_SRC_DIR,
'external-bin-dir=s' => \$EXTERNAL_BIN_DIR,
'transliteration-model-dir=s' => \$TRANSLIT_MODEL,
'input-extension=s' => \$INPUT_EXTENSION,
'output-extension=s' => \$OUTPUT_EXTENSION,
'out-dir=s' => \$OUT_DIR,
'oov-file=s' => \$OOV_FILE);
# check if the files are in place
die("ERROR: you need to define --moses-src-dir --external-bin-dir, --transliteration-model-dir, --oov-file, --input-extension, --output-extension")
unless (defined($MOSES_SRC_DIR) &&
defined($TRANSLIT_MODEL) &&
defined($OOV_FILE) &&
defined($INPUT_EXTENSION)&&
defined($OUTPUT_EXTENSION));
die("ERROR: could not find Transliteration Model '$TRANSLIT_MODEL'")
unless -e $TRANSLIT_MODEL;
die("ERROR: could not find OOV file '$OOV_FILE'")
unless -e $OOV_FILE;
my $UNK_FILE_NAME = basename($OOV_FILE);
`mkdir -p $OUT_DIR/$UNK_FILE_NAME/training`;
`cp $OOV_FILE $OUT_DIR/$UNK_FILE_NAME/$UNK_FILE_NAME`;
my $translitFile = "$OUT_DIR/" . $UNK_FILE_NAME . "/" . $UNK_FILE_NAME . ".translit";
print STDERR "Preparing for Transliteration\n";
prepare_for_transliteration ($OOV_FILE , $translitFile);
print STDERR "Run Transliteration\n";
run_transliteration ($MOSES_SRC_DIR , $EXTERNAL_BIN_DIR , $TRANSLIT_MODEL , $translitFile);
print STDERR "Form Transliteration Corpus\n";
form_corpus ($translitFile , $translitFile.".op.nBest" , $OUT_DIR);
################### Read the UNK word file and prepare for Transliteration ###############################
sub prepare_for_transliteration
{
my @list = @_;
my $testFile = $list[0];
my $translitFile = $list[1];
my %UNK;
my @words;
my $src;
open MYFILE, "<:encoding(UTF-8)", $testFile or die "Can't open $testFile: $!\n";
while (<MYFILE>)
{
chomp;
#print "$_\n";
@words = split(/ /, "$_");
foreach (@words)
{
$UNK{"$_"} = 1;
}
}
close (MYFILE);
open MYFILE, ">:encoding(UTF-8)", $translitFile or die "Can't open $translitFile: $!\n";
foreach my $key ( keys %UNK )
{
$src=join(' ', split('',$key));
print MYFILE "$src\n";
}
close (MYFILE);
}
################### Run Transliteration Module to Obtain Transliterations ###############################
sub run_transliteration
{
my @list = @_;
my $MOSES_SRC = $list[0];
my $EXTERNAL_BIN_DIR = $list[1];
my $TRANSLIT_MODEL = $list[2];
my $eval_file = $list[3];
`touch $eval_file.moses.table.ini`;
print STDERR "Filter Table\n";
`$MOSES_SRC/scripts/training/train-model.perl \\
-mgiza -mgiza-cpus 10 -dont-zip -first-step 9 \\
-external-bin-dir $EXTERNAL_BIN_DIR -f $INPUT_EXTENSION \\
-e $OUTPUT_EXTENSION -alignment grow-diag-final-and -parts 5 \\
-reordering msd-bidirectional-fe -score-options '--KneserNey' \\
-phrase-translation-table $TRANSLIT_MODEL/model/phrase-table \\
-reordering-table $TRANSLIT_MODEL/model/reordering-table \\
-config $eval_file.moses.table.ini \\
-lm 0:3:$eval_file.moses.table.ini:8`;
`$MOSES_SRC/scripts/training/filter-model-given-input.pl \\
$eval_file.filtered $eval_file.moses.table.ini $eval_file \\
-Binarizer "$MOSES_SRC/bin/CreateOnDiskPt 1 1 4 100 2"`;
`rm $eval_file.moses.table.ini`;
print STDERR "Apply Filter\n";
`$MOSES_SRC/scripts/ems/support/substitute-filtered-tables-and-weights.perl \\
$eval_file.filtered/moses.ini $TRANSLIT_MODEL/model/moses.ini \\
$TRANSLIT_MODEL/tuning/moses.tuned.ini $eval_file.filtered.ini`;
`$MOSES_SRC/bin/moses \\
-search-algorithm 1 -cube-pruning-pop-limit 5000 -s 5000 \\
-threads 16 -drop-unknown -distortion-limit 0 \\
-n-best-list $eval_file.op.nBest 50 \\
-f $eval_file.filtered.ini \\
< $eval_file \\
> $eval_file.op`;
}
################### Read the output of Transliteration Model and Form Corpus ###############################
sub form_corpus
{
my @list = @_;
my $inp_file = $list[0];
my $testFile = $list[1];
my $EVAL_DIR = $list[2];
my %vocab;
my @words;
my $thisStr;
my $UNK_FILE_NAME = basename($OOV_FILE);
my $target = $EVAL_DIR . "/$UNK_FILE_NAME/training/corpus.$OUTPUT_EXTENSION";
my $outFile = "$EVAL_DIR/out.txt";
open MYFILE, "<:encoding(UTF-8)", $testFile or die "Can't open $testFile: $!\n";
open OUTFILE, ">:encoding(UTF-8)", $outFile or die "Can't open $outFile: $!\n";
while (<MYFILE>)
{
chomp;
#print "$_\n";
@words = split(/ /, "$_");
my $i = 2;
my $prob;
$thisStr = "";
while ($words[$i] ne "|||")
{
$thisStr = $thisStr . $words[$i];
$i++;
}
$i++;
while ($words[$i] ne "|||")
{
$i++;
}
$i++;
$prob = $words[$i];
print OUTFILE "$thisStr\t$prob\n";
}
close (MYFILE);
close (OUTFILE);
}
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