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-rwxr-xr-xgi/pf/guess-translits.pl71
1 files changed, 71 insertions, 0 deletions
diff --git a/gi/pf/guess-translits.pl b/gi/pf/guess-translits.pl
new file mode 100755
index 00000000..ab737121
--- /dev/null
+++ b/gi/pf/guess-translits.pl
@@ -0,0 +1,71 @@
+#!/usr/bin/perl -w
+use strict;
+use utf8;
+
+my $MIN_PMI = -3;
+
+my %fs;
+my %es;
+my %ef;
+
+die "Usage: $0 < input.utf8.txt\n" if scalar @ARGV > 0;
+
+binmode(STDIN,":utf8");
+binmode(STDOUT,":utf8");
+binmode(STDERR,":utf8");
+
+my $tot = 0;
+print STDERR "Reading alignments from STDIN ...\n";
+while(<STDIN>) {
+ chomp;
+ my ($fsent, $esent, $alsent) = split / \|\|\| /;
+ die "Format should be 'foreign sentence ||| english sentence ||| 0-0 1-1 ...'\n" unless defined $fsent && defined $esent && defined $alsent;
+
+ my @fws = split /\s+/, $fsent;
+ my @ews = split /\s+/, $esent;
+ my @as = split /\s+/, $alsent;
+ my %a2b;
+ my %b2a;
+ for my $ap (@as) {
+ my ($a,$b) = split /-/, $ap;
+ $a2b{$a}->{$b} = 1;
+ $b2a{$b}->{$a} = 1;
+ }
+ for my $a (keys %a2b) {
+ my $bref = $a2b{$a};
+ next unless scalar keys %$bref < 2;
+ my $b = (keys %$bref)[0];
+ next unless scalar keys %{$b2a{$b}} < 2;
+ my $f = $fws[$a];
+ next unless defined $f;
+ next unless length($f) > 3;
+ my $e = $ews[$b];
+ next unless defined $e;
+ next unless length($e) > 3;
+
+ $ef{$f}->{$e}++;
+ $es{$e}++;
+ $fs{$f}++;
+ $tot++;
+ }
+}
+my $ltot = log($tot);
+my $num = 0;
+print STDERR "Extracting pairs for PMI > $MIN_PMI ...\n";
+for my $f (keys %fs) {
+ my $logf = log($fs{$f});
+ my $esref = $ef{$f};
+ for my $e (keys %$esref) {
+ my $loge = log($es{$e});
+ my $ef = $esref->{$e};
+ my $logef = log($ef);
+ my $pmi = $logef - ($loge + $logf);
+ next if $pmi < $MIN_PMI;
+ my @flets = split //, $f;
+ my @elets = split //, $e;
+ print "@flets ||| @elets\n";
+ $num++;
+ }
+}
+print STDERR "Extracted $num pairs.\n";
+print STDERR "Recommend running:\n ../../training/model1 -t -99999 output.txt\n";