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#!/usr/bin/perl -w
# Compatible with sri LM-creating script, eg.
# ngram-count -order 5 -interpolate -wbdiscount -unk -text corpus.txt -lm lm.txt
# To use it in the EMS, add this to the [LM] section
# lm-training = "$moses-script-dir/generic/trainlm-irst.perl -cores $cores -irst-dir $irst-dir"
# settings = ""
# Also, make sure that $irst-dir is defined (in the [LM] or [GENERAL] section.
# It should point to the root of the LM toolkit, eg
# irst-dir = /Users/hieu/workspace/irstlm/trunk/bin
# And make sure that $cores is defined, eg $cores = 8
# And make sure the $settings variable is empty. This script doesn't understand some of the sri args like -unk and will complain.
use strict;
use FindBin qw($Bin);
use Getopt::Long;
my $order = 3;
my $corpusPath;
my $lmPath;
my $cores = 2;
my $irstPath;
my $tempPath = "tmp";
my $temp;
GetOptions("order=s" => \$order,
"text=s" => \$corpusPath,
"lm=s" => \$lmPath,
"cores=s" => \$cores,
"irst-dir=s" => \$irstPath,
"temp-dir=s" => \$tempPath,
"interpolate!" => \$temp, #ignore
"kndiscount!" => \$temp #ignore
) or exit 1;
#die("ERROR: please set order") unless defined($order);
die("ERROR: please set text") unless defined($corpusPath);
die("ERROR: please set lm") unless defined($lmPath);
die("ERROR: please set irst-dir") unless defined($irstPath);
my $ext = ($corpusPath =~ m/([^.]+)$/)[0];
print "extension is $ext\n";
$tempPath .= "/irstlm-build-tmp.$$";
`mkdir -p $tempPath`;
my $cmd;
if ($ext eq "gz")
{
$cmd = "zcat $corpusPath | $irstPath/add-start-end.sh | gzip -c > $tempPath/monolingual.setagged.gz";
}
else
{
$cmd = "cat $corpusPath | $irstPath/add-start-end.sh | gzip -c > $tempPath/monolingual.setagged.gz";
}
print STDERR "EXECUTING $cmd\n";
`$cmd`;
$cmd = "IRSTLM=$irstPath/.. $irstPath/build-lm.sh -t $tempPath/stat4 -i \"gunzip -c $tempPath/monolingual.setagged.gz\" -n $order -p -o $tempPath/iarpa.gz -k $cores";
print STDERR "EXECUTING $cmd\n";
`$cmd`;
$ext = ($lmPath =~ m/([^.]+)$/)[0];
print "extension is $ext\n";
if ($ext eq "gz")
{
$cmd = "$irstPath/compile-lm $tempPath/iarpa.gz --text yes /dev/stdout | gzip -c > $lmPath";
}
else
{
$cmd = "$irstPath/compile-lm $tempPath/iarpa.gz --text yes $lmPath";
}
print STDERR "EXECUTING $cmd\n";
`$cmd`;
$cmd = "rm -rf $tempPath";
print STDERR "EXECUTING $cmd\n";
`$cmd`;
print STDERR "FINISH.\n";
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