mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2025-01-02 17:09:36 +03:00
ef028446f3
This is not pleasant to read (and much, much less pleasant to write!) but sort of necessary in an open project. Right now it's quite hard to figure out what is licensed how, which doesn't matter much to most people but can suddenly become very important when people want to know what they're being allowed to do. I kept the notices as short as I could. As far as I could see, everything without a clear license notice is LGPL v2.1 or later.
83 lines
2.0 KiB
Perl
Executable File
83 lines
2.0 KiB
Perl
Executable File
#!/usr/bin/env perl
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# Collects and prints all n-grams that appear in the given corpus both
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# tokenized as well as untokenized.
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# Ondrej Bojar
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#
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# This file is part of moses. Its use is licensed under the GNU Lesser General
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# Public License version 2.1 or, at your option, any later version.
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use strict;
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use warnings;
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use Getopt::Long;
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binmode(STDIN, ":utf8");
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binmode(STDOUT, ":utf8");
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binmode(STDERR, ":utf8");
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my $usage = 0;
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my $lowercase = 0;
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my $n = 2;
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GetOptions(
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"n=i" => \$n, # the n-grams to search for (default: bigrams)
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"lc|lowercase" => \$lowercase, # ignore case
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"h|help|usage" => \$usage, # show info
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) or exit 1;
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my $nl = 0;
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my $ngrams;
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my $words;
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while (<>) {
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$nl++;
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print STDERR "." if $nl % 100000 == 0;
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print STDERR "($nl)" if $nl % 500000 == 0;
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chomp;
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$_ = lc($_) if $lowercase;
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my @words = split /\s+/;
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foreach my $w (@words) {
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$words->{$w}++;
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}
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$ngrams = ngrams($n, \@words, $ngrams); # add ngram counts from this
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}
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print STDERR "Done.\n";
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# Find suspicious
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my $report;
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foreach my $ngr (keys %$ngrams) {
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my $w = $ngr;
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$w =~ s/ //g;
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my $untokcnt = $words->{$w};
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next if ! $untokcnt; # never seen untokenized
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my $tokcnt = $ngrams->{$ngr};
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$report->{$ngr}->{"tok"} = $tokcnt;
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$report->{$ngr}->{"untok"} = $untokcnt;
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$report->{$ngr}->{"diff"} = abs($untokcnt-$tokcnt);
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$report->{$ngr}->{"sum"} = $untokcnt+$tokcnt;
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}
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# Report
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foreach my $ngr (sort {
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$report->{$a}->{"diff"} <=> $report->{$b}->{"diff"}
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|| $report->{$b}->{"sum"} <=> $report->{$a}->{"sum"}
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}
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keys %$report) {
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print "$ngr\t$report->{$ngr}->{untok}\t$report->{$ngr}->{tok}\t$report->{$ngr}->{diff}\n";
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}
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sub ngrams {
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my $n = shift;
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my @words = @{shift()};
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my $out = shift;
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if ($n == 1) {
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foreach my $w (@words) {
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$out->{$w}++;
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}
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} else {
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while ($#words >= $n-1) {
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$out->{join(" ", @words[0..$n-1])}++;
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shift @words;
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}
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}
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return $out;
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}
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