Factor out the division selector into its own function.

[wloh] / train.pl

diff --git a/train.pl b/train.pl
index 95dcd06208b61f87bfadcafb3093d68407ae9144..9238b61cb73ef1e6945c352a46f5f04f257906e3 100755 (executable)
--- a/train.pl
+++ b/train.pl
@@ -11,30 +11,14 @@ my $dbh = DBI->connect($config::local_connstr, $config::local_username, $config:
 $dbh->{AutoCommit} = 0;
 $dbh->{RaiseError} = 1;
 
+$dbh->do('SET client_min_messages TO WARNING');
+
 # Find last completely done season 
 my $ref = $dbh->selectrow_hashref('SELECT sesong FROM fotballserier GROUP BY sesong HAVING COUNT(*)=COUNT(avgjort=1 OR NULL) ORDER BY sesong DESC LIMIT 1');
 my $last_season = $ref->{'sesong'};
 
-my $tmpnam = POSIX::tmpnam();
-open DATA, ">", $tmpnam
-       or die "$tmpnam: $!";
-
-# Fetch name (ID) list
-my $q = $dbh->prepare('SELECT DISTINCT id FROM fotballdeltagere');
-$q->execute();
-my @ids = ();
-while (my $ref = $q->fetchrow_hashref) {
-       my $id = $ref->{'id'};
-       push @ids, $id;
-}
-       
-print DATA scalar @ids, "\n";
-for my $id (@ids) {
-       print DATA $id, "\n";
-}
-
 # Fetch games
-$q = $dbh->prepare('
+my $q = $dbh->prepare('
 SELECT
   deltager1.id as p1, deltager2.id as p2, maalfor, maalmot, least(pow(2.0, (sesong - ? + 3) / 3.0), 1.0) AS vekt
 FROM
@@ -46,23 +30,59 @@ WHERE deltager1.Nr > deltager2.nr
 ');
 $q->execute($last_season);
 
+my @games = ();
+my %ids = ();
+
 while (my $ref = $q->fetchrow_hashref) {
        next if ($ref->{'maalfor'} == 150 && $ref->{'maalmot'} == 0);
        next if ($ref->{'maalfor'} == 0 && $ref->{'maalmot'} == 150);
-       printf DATA "%d %d %d %d %f\n", $ref->{'p1'}, $ref->{'p2'}, $ref->{'maalfor'}, $ref->{'maalmot'}, $ref->{'vekt'};
+       next if ($ref->{'maalfor'} == 150 && $ref->{'maalmot'} == 150);
+       push @games, { %$ref };
+       $ids{$ref->{'p1'}} = 1;
+       $ids{$ref->{'p2'}} = 1;
 }
 
+# Output to file
+my $tmpnam = POSIX::tmpnam();
+open DATA, ">", $tmpnam
+       or die "$tmpnam: $!";
+
+printf DATA "%d\n", scalar keys %ids;
+for my $id (keys %ids) {
+       printf DATA "%d\n", $id;
+}
+for my $ref (@games) {
+       printf DATA "%d %d %d %d %f\n", $ref->{'p1'}, $ref->{'p2'}, $ref->{'maalfor'}, $ref->{'maalmot'}, $ref->{'vekt'};
+}
 close DATA;
 
-$dbh->do('DELETE FROM ratings');
-my $iq = $dbh->prepare('INSERT INTO ratings ( id, rating ) VALUES (?, ?)');
+my @ratings = ();
+my @covariances = ();
 
 open RATINGS, "$config::base_dir/bayeswf < $tmpnam |"
        or die "bayeswf: $!";
 while (<RATINGS>) {
-       /(.*) (.*)/ or next;
-       $iq->execute($2, $1);
+       chomp;
+       my @x = split;
+       if ($x[0] eq 'covariance') {
+               push @covariances, (join("\t", @x[1..3]));
+       } else {
+               push @ratings, ($x[2] . "\t" . $x[0] . "\t" . $x[1]);
+       }
 }
 
+$dbh->do('TRUNCATE ratings');
+$dbh->do('COPY ratings ( id, rating, rating_stddev ) FROM STDIN');
+$dbh->pg_putcopydata(join("\n", @ratings));
+$dbh->pg_putcopyend();
+
+$dbh->do('CREATE TABLE new_covariance ( player1 smallint NOT NULL, player2 smallint NOT NULL, cov float NOT NULL )');
+$dbh->do('COPY new_covariance ( player1, player2, cov ) FROM STDIN');
+$dbh->pg_putcopydata(join("\n", @covariances));
+$dbh->pg_putcopyend();
+$dbh->do('ALTER TABLE new_covariance ADD PRIMARY KEY ( player1, player2 );');
+$dbh->do('DROP TABLE IF EXISTS covariance');
+$dbh->do('ALTER TABLE new_covariance RENAME TO covariance');
+
 $dbh->commit;
 unlink($tmpnam);