mirror of
https://github.com/moses-smt/mosesdecoder.git
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69 lines
2.3 KiB
Perl
Executable File
69 lines
2.3 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# Compatible with sri LM-creating script, eg.
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# ngram-count -order 5 -interpolate -wbdiscount -unk -text corpus.txt -lm lm.txt
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# To use it in the EMS, add this to the [LM] section
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# lm-training = "$moses-script-dir/generic/trainlm-irst2.perl -cores $cores -irst-dir $irst-dir"
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# settings = ""
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# Also, make sure that $irst-dir is defined (in the [LM] or [GENERAL] section.
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# It should point to the root of the LM toolkit, eg
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# irst-dir = /Users/hieu/workspace/irstlm/trunk/bin
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# Set smoothing method in settings, if different from modified Kneser-Ney
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use strict;
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use FindBin qw($RealBin);
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use Getopt::Long;
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my $order = 3; # order of language model (default trigram)
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my $corpusPath; # input text data
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my $lmPath; # generated language model
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my $cores = 2; # number of CPUs used
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my $irstPath; # bin directory of IRSTLM
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my $tempPath = "tmp"; # temp dir
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my $pruneSingletons = 1; # 1 = prune singletons, 0 = keep singletons
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my $smoothing = "msb"; # smoothing method: wb = witten-bell, sb = kneser-ney, msb = modified-kneser-ney
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my $dummy;
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GetOptions("order=s" => \$order,
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"text=s" => \$corpusPath,
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"lm=s" => \$lmPath,
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"cores=s" => \$cores,
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"irst-dir=s" => \$irstPath,
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"temp-dir=s" => \$tempPath,
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"p=i" => \$pruneSingletons, # irstlm parameter: prune singletons
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"s=s" => \$smoothing, # irstlm parameter: smoothing method
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"interpolate!" => \$dummy, #ignore
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"kndiscount!" => \$dummy #ignore
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) or exit 1;
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#die("ERROR: please set order") unless defined($order);
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die("ERROR: please set text") unless defined($corpusPath);
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die("ERROR: please set lm") unless defined($lmPath);
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die("ERROR: please set irst-dir") unless defined($irstPath);
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$tempPath .= "/irstlm-build-tmp.$$";
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`mkdir -p $tempPath`;
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# add <s> and </s>
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my $cmd = "cat $corpusPath | $irstPath/add-start-end.sh > $tempPath/setagged";
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print STDERR "EXECUTING $cmd\n";
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`$cmd`;
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# collect n-gram counts
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$cmd = "$irstPath/ngt -i=$tempPath/setagged -n=$order -b=yes -o=$tempPath/counts";
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print STDERR "EXECUTING $cmd\n";
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`$cmd`;
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# build lm
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$cmd = "$irstPath/tlm -o=$lmPath -lm=$smoothing -bo=yes -n=$order -tr=$tempPath/counts";
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$cmd .= " -ps=no" unless $pruneSingletons;
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print STDERR "EXECUTING $cmd\n";
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`$cmd`;
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$cmd = "rm -rf $tempPath";
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print STDERR "EXECUTING $cmd\n";
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`$cmd`;
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print STDERR "FINISH.\n";
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