mosesdecoder/scripts/training/remove-orphan-phrase-pairs-from-reordering-table.perl
Jeroen Vermeulen ef028446f3 Add license notices to scripts.
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.
2015-05-29 18:30:26 +07:00

56 lines
1.7 KiB
Perl
Executable File

#!/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;
my ($ttable_file) = @ARGV;
die("syntax: remove-orphan-phrase-pairs-from-reordering-table.perl TTABLE < REORDERING_TABLE > REORDERING_TABLE.pruned")
unless defined($ttable_file) && -e $ttable_file;
if ($ttable_file =~ /gz$/) {
open(TTABLE,"zcat $ttable_file|");
}
else {
open(TTABLE,$ttable_file);
}
# get first ttable line to be matched
my $ttable_line = <TTABLE>;
my $ttable_phrase_pair = &get_phrase_pair($ttable_line);
# loop through reordering table
while(my $reordering_line = <STDIN>) {
my $reordering_phrase_pair = &get_phrase_pair($reordering_line);
# if it does not match ttable line, then keep looping
#print STDERR "$reordering_phrase_pair ?? $ttable_phrase_pair\n";
while($reordering_phrase_pair ne $ttable_phrase_pair) {
#print STDERR "$reordering_phrase_pair != $ttable_phrase_pair\n";
$reordering_line = <STDIN>;
last if !defined($reordering_line); # end of file, done
$reordering_phrase_pair = &get_phrase_pair($reordering_line);
}
last if !defined($reordering_line); # end of file, done
# print matched line
print $reordering_line;
# read next ttable line to be matched
$ttable_line = <TTABLE>;
last if !defined($ttable_line); # end of file, done
$ttable_phrase_pair = &get_phrase_pair($ttable_line);
}
if (defined($ttable_line)) {
print STDERR "ERROR: trailing ttable lines -> could not find $ttable_line!\n";
}
sub get_phrase_pair {
my ($line) = @_;
my ($src,$tgt,$other) = split(/ \|\|\| /,$line);
return "$src ||| $tgt";
}