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egs/rm/s5/local/make_rm_lm.pl
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#!/usr/bin/env perl
# Copyright 2010-2011 Yanmin Qian Microsoft Corporation
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
# WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
# MERCHANTABLITY OR NON-INFRINGEMENT.
# See the Apache 2 License for the specific language governing permissions and
# limitations under the License.
# This file takes as input the file wp_gram.txt that comes with the RM
# distribution, and creates the language model as an acceptor in FST form.
# make_rm_lm.pl wp_gram.txt > G.txt
if (@ARGV != 1) {
print "usage: make_rm_lm.pl wp_gram.txt > G.txt
";
exit(0);
}
unless (open(IN_FILE, "@ARGV[0]")) {
die ("can't open @ARGV[0]");
}
$flag = 0;
$count_wrd = 0;
$cnt_ends = 0;
$init = "";
while ($line = <IN_FILE>)
{
chop($line);
$line =~ s/ //g;
if(($line =~ /^>/))
{
if($flag == 0)
{
$flag = 1;
}
$line =~ s/>//g;
$hashcnt{$init} = $i;
$init = $line;
$i = 0;
$count_wrd++;
@LineArray[$count_wrd - 1] = $init;
$hashwrd{$init} = 0;
}
elsif($flag != 0)
{
$hash{$init}[$i] = $line;
$i++;
if($line =~ /SENTENCE-END/)
{
$cnt_ends++;
}
}
else
{}
}
$hashcnt{$init} = $i;
$num = 0;
$weight = 0;
$init_wrd = "SENTENCE-END";
$hashwrd{$init_wrd} = @LineArray;
for($i = 0; $i < $hashcnt{$init_wrd}; $i++)
{
$weight = -log(1/$hashcnt{$init_wrd});
$hashwrd{$hash{$init_wrd}[$i]} = $i + 1;
print "0 $hashwrd{$hash{$init_wrd}[$i]} $hash{$init_wrd}[$i] $hash{$init_wrd}[$i] $weight
";
}
$num = $i;
for($i = 0; $i < @LineArray; $i++)
{
if(@LineArray[$i] eq 'SENTENCE-END')
{}
else
{
if($hashwrd{@LineArray[$i]} == 0)
{
$num++;
$hashwrd{@LineArray[$i]} = $num;
}
for($j = 0; $j < $hashcnt{@LineArray[$i]}; $j++)
{
$weight = -log(1/$hashcnt{@LineArray[$i]});
if($hashwrd{$hash{@LineArray[$i]}[$j]} == 0)
{
$num++;
$hashwrd{$hash{@LineArray[$i]}[$j]} = $num;
}
if($hash{@LineArray[$i]}[$j] eq 'SENTENCE-END')
{
print "$hashwrd{@LineArray[$i]} $hashwrd{$hash{@LineArray[$i]}[$j]} <eps> <eps> $weight
"
}
else
{
print "$hashwrd{@LineArray[$i]} $hashwrd{$hash{@LineArray[$i]}[$j]} $hash{@LineArray[$i]}[$j] $hash{@LineArray[$i]}[$j] $weight
";
}
}
}
}
print "$hashwrd{$init_wrd} 0
";
close(IN_FILE);
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