From: Tara L Andrews <tla@mit.edu>
Date: Wed, 11 Jul 2012 10:08:53 +0000 (+0200)
Subject: make implicit transitive relationships explicit
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=898b1310fbe75a92e8bc1a535f60c17dab6bd060;p=scpubgit%2Fstemmatology.git

make implicit transitive relationships explicit
---

diff --git a/script/propagate_transitive.pl b/script/propagate_transitive.pl
new file mode 100755
index 0000000..afe11d7
--- /dev/null
+++ b/script/propagate_transitive.pl
@@ -0,0 +1,125 @@
+#!/usr/bin/env perl
+
+use lib 'lib';
+use feature 'say';
+use strict;
+use warnings;
+use Getopt::Long;
+use Lingua::Features::Structure;
+use Text::Tradition::Directory;
+use XML::Easy::Syntax qw/ $xml10_name_rx $xml10_namestartchar_rx /;
+use TryCatch;
+
+binmode STDOUT, ':utf8';
+binmode STDERR, ':utf8';
+eval { no warnings; binmode $DB::OUT, ':utf8'; $DB::deep = 1000 };
+
+my %TYPEVALUES = (
+	orthographic => 1,
+	spelling => 2,
+	grammatical => 3,
+	lexical => 3,
+	collated => 50,
+	);
+
+my( $dbuser, $dbpass );
+my $dsn = 'dbi:SQLite:dbname=stemmaweb/db/traditions.db';
+my $testrun;
+
+GetOptions( 
+	'dsn=s'    => \$dsn,
+	'u|user=s' => \$dbuser,
+	'p|pass=s' => \$dbpass,
+	'n|test'   => \$testrun,
+	);
+
+my $dbopts = { dsn => $dsn };
+$dbopts->{extra_args}->{user} = $dbuser if $dbuser;
+$dbopts->{extra_args}->{password} = $dbpass if $dbpass;
+
+my $dir = Text::Tradition::Directory->new( $dbopts );
+
+my $scope = $dir->new_scope();
+my $lookfor = $ARGV[0] || '';
+foreach my $tinfo ( $dir->traditionlist() ) {
+	next unless $tinfo->{'name'} =~ /$lookfor/ || $tinfo->{'id'} eq $lookfor;
+	my $tradition = $dir->lookup( $tinfo->{'id'} );
+	my $c = $tradition->collation;
+
+	my $represented_by = {};
+	my $representative = {};
+	# For each set of ranked relationships, make all the implied links 
+	# explicit. Start with orthographic readings
+	push_rel_type( $c, 'orthographic', $representative, $represented_by );
+	# then move on to spelling readings
+	push_rel_type( $c, 'spelling', $representative, $represented_by );
+	
+	# Now all orth/spelling linked words are the same word for the purposes of
+	# other colocated links, and in our representation hashes.
+	# Go through the other relationships and propagate them to all words that are
+	# the same word.
+	foreach my $rel ( $c->relationships ) {
+		my $relobj = $c->get_relationship( $rel );
+		next unless $relobj->type =~ /^(grammatical|lexical)$/;
+		my $r1pool = $represented_by->{$representative->{$rel->[0]}};
+		my $r2pool = $represented_by->{$representative->{$rel->[1]}};
+		# Error check
+		if( check_distinct( $r1pool, $r2pool ) ) {
+			map { propagate_rel( $c, $relobj->type, $_, @$r2pool ) } @$r1pool;
+		} else {
+			warn "Pools not distinct for " . join( ' and ', @$rel );
+		}
+	}
+	$dir->save( $tradition ) unless $testrun;
+}
+
+sub propagate_rel {
+	my( $c, $type, @list ) = @_;
+	my $curr = shift @list;
+	while( @list ) {
+		foreach my $r ( @list ) {
+			next if $curr eq $r;
+			my $hasrel = $c->get_relationship( $curr, $r );
+			if( !$hasrel || $hasrel->type eq 'collated' ) {
+				say STDERR "Propagating $type relationship $curr -> $r";
+				$c->add_relationship( $curr, $r, { type => $type } );
+			} elsif( $hasrel->type ne $type ) {
+				warn "Found relationship conflict at $curr / $r: "
+					. $hasrel->type . " instead of $type"
+					unless( $TYPEVALUES{$hasrel->type} < $TYPEVALUES{$type} );
+			}
+		}
+		$curr = shift @list;
+	}
+}
+
+sub push_rel_type {
+	my( $c, $type, $r2rep, $rep2r ) = @_;
+	my %handled;
+	foreach my $rdg ( $c->readings ) {
+		next if $rdg->is_meta;
+		next if $handled{"$rdg"};
+		if( exists $r2rep->{"$rdg"} ) {
+			$rdg = $r2rep->{"$rdg"};
+		}
+		# Get the specified relationships
+		my @set = $rdg->related_readings( sub {
+			$_[0]->colocated && ( $_[0]->type eq $type ||
+			$TYPEVALUES{$_[0]->type} < $TYPEVALUES{$type} ) } );
+		push( @set, $rdg );
+		propagate_rel( $c, $type, @set ) if @set > 2;
+		# Set up the representatives
+		map { $r2rep->{"$_"} = $rdg } @set;
+		$rep2r->{"$rdg"} = \@set;
+		map { $handled{"$_"} = 1 } @set;
+	}
+}
+
+sub check_distinct {
+	my( $l1, $l2 ) = @_;
+	my %seen;
+	map { $seen{"$_"} = 1 } @$l1;
+	map { return 0 if $seen{"$_"} } @$l2;
+	return 1;
+}
+