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IWPT_2021 / tools /html_evaluation.pl

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#!/usr/bin/env perl
# Scans the folder with the evaluation results of a shared task submission.
# Collects all scores and creates a HTML page that presents them.
# Copyright © 2020 Dan Zeman <zeman@ufal.mff.cuni.cz>
# License: GNU GPL

use utf8;
use open ':utf8';
binmode(STDIN, ':utf8');
binmode(STDOUT, ':utf8');
binmode(STDERR, ':utf8');

my $system_unpacked_folder = '/home/zeman/iwpt2020/_private/data/sysoutputs';

# List of language codes and names.
my %languages =
(
    'ar' => 'Arabic',
    'bg' => 'Bulgarian',
    'cs' => 'Czech',
    'nl' => 'Dutch',
    'en' => 'English',
    'et' => 'Estonian',
    'fi' => 'Finnish',
    'fr' => 'French',
    'it' => 'Italian',
    'lv' => 'Latvian',
    'lt' => 'Lithuanian',
    'pl' => 'Polish',
    'ru' => 'Russian',
    'sk' => 'Slovak',
    'sv' => 'Swedish',
    'ta' => 'Tamil',
    'uk' => 'Ukrainian'
);
my @languages = sort {$languages{$a} cmp $languages{$b}} (keys(%languages));
# List and ordering of treebanks for each language.
my %dev_treebanks =
(
    'ar' => ['Arabic-PADT'],
    'bg' => ['Bulgarian-BTB'],
    'cs' => ['Czech-FicTree', 'Czech-CAC', 'Czech-PDT'],
    'nl' => ['Dutch-Alpino', 'Dutch-LassySmall'],
    'en' => ['English-EWT'],
    'et' => ['Estonian-EDT'],
    'fi' => ['Finnish-TDT'],
    'fr' => ['French-Sequoia'],
    'it' => ['Italian-ISDT'],
    'lv' => ['Latvian-LVTB'],
    'lt' => ['Lithuanian-ALKSNIS'],
    'pl' => ['Polish-LFG', 'Polish-PDB'],
    'ru' => ['Russian-SynTagRus'],
    'sk' => ['Slovak-SNK'],
    'sv' => ['Swedish-Talbanken'],
    'ta' => ['Tamil-TTB'],
    'uk' => ['Ukrainian-IU']
);
my %test_treebanks =
(
    'ar' => ['Arabic-PADT'],
    'bg' => ['Bulgarian-BTB'],
    'cs' => ['Czech-FicTree', 'Czech-CAC', 'Czech-PDT', 'Czech-PUD'],
    'nl' => ['Dutch-Alpino', 'Dutch-LassySmall'],
    'en' => ['English-EWT', 'English-PUD'],
    'et' => ['Estonian-EDT', 'Estonian-EWT'],
    'fi' => ['Finnish-TDT', 'Finnish-PUD'],
    'fr' => ['French-Sequoia', 'French-FQB'],
    'it' => ['Italian-ISDT'],
    'lv' => ['Latvian-LVTB'],
    'lt' => ['Lithuanian-ALKSNIS'],
    'pl' => ['Polish-LFG', 'Polish-PDB', 'Polish-PUD'],
    'ru' => ['Russian-SynTagRus'],
    'sk' => ['Slovak-SNK'],
    'sv' => ['Swedish-Talbanken', 'Swedish-PUD'],
    'ta' => ['Tamil-TTB'],
    'uk' => ['Ukrainian-IU']
);
# Enhancement type selection for each treebank (only for information in the table).
my %enhancements =
(
    'Arabic-PADT'        => 'no xsubj',
    'Bulgarian-BTB'      => '', # all
    'Czech-FicTree'      => '', # all
    'Czech-CAC'          => '', # all
    'Czech-PDT'          => '', # all
    'Czech-PUD'          => 'no codepend',
    'Dutch-Alpino'       => '', # all
    'Dutch-LassySmall'   => '', # all
    'English-EWT'        => '', # all
    'English-PUD'        => '', # all
    'Estonian-EDT'       => 'no xsubj',
    'Estonian-EWT'       => 'no codepend, no xsubj',
    'Finnish-TDT'        => '', # all
    'Finnish-PUD'        => 'no codepend, no xsubj',
    'French-Sequoia'     => 'no gapping, relcl, case',
    'French-FQB'         => 'no gapping, relcl, case',
    'Italian-ISDT'       => '', # all
    'Latvian-LVTB'       => '', # all
    'Lithuanian-ALKSNIS' => '', # all
    'Polish-LFG'         => 'no gapping', # no gapping
    'Polish-PDB'         => '', # all
    'Polish-PUD'         => '', # all
    'Russian-SynTagRus'  => '', # no coord depend
    'Slovak-SNK'         => '', # all
    'Swedish-Talbanken'  => '', # all
    'Swedish-PUD'        => '', # all
    'Tamil-TTB'          => 'no gapping, xsubj, relcl',
    'Ukrainian-IU'       => '', # all
);

if(scalar(@ARGV)!=3)
{
    die("Three arguments expected: team name, submission id, and dev|test");
}
my $team = $ARGV[0];
my $submid = $ARGV[1];
my $portion = $ARGV[2];
if($team !~ m/^[a-z0-9_]+$/)
{
    die("Invalid team name '$team': must be [a-z0-9_]+");
}
if($submid !~ m/^[a-z0-9_]+$/)
{
    die("Invalid submission id '$submid': must be [a-z0-9_]+");
}
if($portion !~ m/^(dev|test)$/)
{
    die("Unknown data portion '$portion', should be 'dev' or 'test'");
}
my $submission_folder = "$system_unpacked_folder/$team/$submid";
my %treebanks = $portion eq 'dev' ? %dev_treebanks : %test_treebanks;

foreach my $language (@languages)
{
    # Read the evaluation scores.
    my $file = "$submission_folder/$language.eval.log";
    if(-f $file)
    {
        open(EVAL, $file) or die("Cannot read '$file': $!");
        while(<EVAL>)
        {
            s/\r?\n$//;
            if(m/^\w+.*\|.*\d+/)
            {
                my @f = split(/\s*\|\s*/, $_);
                my $metric = shift(@f);
                my $p = shift(@f);
                my $r = shift(@f);
                my $f = shift(@f);
                my $a = shift(@f);
                $score{language}{$language}{$metric} =
                {
                    'p' => $p,
                    'r' => $r,
                    'f' => $f,
                    'a' => $a
                };
            }
        }
        close(EVAL);
    }
}
my @treebanks;
my $doing_dev;
foreach my $language (@languages)
{
    my $language_reliable = exists($score{language}{$language});
    foreach my $treebank (@{$treebanks{$language}})
    {
        push(@treebanks, $treebank);
        my $tcode = lc($treebank);
        $tcode =~ s/^.+-//;
        # Read the evaluation scores.
        my $file = "$submission_folder/pertreebank/${language}_$tcode-ud";
        if(-e "$file-dev.eval.log" && -e "$file-test.eval.log")
        {
            die("Both dev and test eval.log exist for '$file'");
        }
        elsif(-e "$file-dev.eval.log")
        {
            $file .= '-dev.eval.log';
            if(!defined($doing_dev))
            {
                $doing_dev = 1;
            }
            elsif($doing_dev==0)
            {
                die("Both dev and test eval logs are present in the per-treebank folder.");
            }
        }
        elsif(-e "$file-test.eval.log")
        {
            $file .= '-test.eval.log';
            if(!defined($doing_dev))
            {
                $doing_dev = 0;
            }
            elsif($doing_dev==1)
            {
                die("Both dev and test eval logs are present in the per-treebank folder.");
            }
        }
        # Score of a treebank is not reliable if the score for the language does not exist.
        if(-f $file && $language_reliable)
        {
            open(EVAL, $file) or die("Cannot read '$file': $!");
            while(<EVAL>)
            {
                s/\r?\n$//;
                if(m/^\w+.*\|.*\d+/)
                {
                    my @f = split(/\s*\|\s*/, $_);
                    my $metric = shift(@f);
                    my $p = shift(@f);
                    my $r = shift(@f);
                    my $f = shift(@f);
                    my $a = shift(@f);
                    $score{treebank}{$treebank}{$metric} =
                    {
                        'p' => $p,
                        'r' => $r,
                        'f' => $f,
                        'a' => $a
                    };
                }
            }
            close(EVAL);
        }
        # For comparison, add a copy of (link to) the language coarse scores to each treebank.
        $score{treebank}{$treebank}{language} = $score{language}{$language};
        # Sum up (and average) the qualitative ELAS scores for each language.
        $score{language}{$language}{QualitativeSUM}{ELAS}{f} += $score{treebank}{$treebank}{ELAS}{f};
        $score{language}{$language}{QualitativeCNT}++;
    }
}
my $html = "<html>\n";
$html .= "<head>\n";
$html .= "  <title>IWPT Results of $team/$submid</title>\n";
$html .= "</head>\n";
$html .= "<body>\n";
$html .= "  <h1>IWPT 2020 Shared Task Results of <span style='color:blue'>$team</span>/$submid</h1>\n";
my @metrics = qw(Tokens Words Sentences UPOS XPOS UFeats AllTags Lemmas UAS LAS CLAS MLAS BLEX EULAS ELAS);
$html .= "  <h2>Coarse F<sub>1</sub> Scores</h2>\n";
$html .= "  <p>Each score pertains to the combined test set of the language, without distinguishing individual treebanks and the enhancement types they annotate. The last line shows the macro-average over languages.</p>\n";
$html .= "  <table>\n";
$html .= "    <tr><td><b>Language</b></td>";
foreach my $metric (@metrics)
{
    $html .= "<td><b>$metric</b></td>";
}
$html .= "</tr>\n";
foreach my $language (@languages)
{
    my $lh = $score{language}{$language};
    $html .= "    <tr><td>$languages{$language}</td>";
    foreach my $metric (@metrics)
    {
        $html .= "<td>$lh->{$metric}{f}</td>";
        $score{language}{SUM}{$metric}{f} += $lh->{$metric}{f};
    }
    $html .= "</tr>\n";
}
my $n = scalar(@languages);
$html .= "    <tr><td><b>Average</b></td>";
foreach my $metric (@metrics)
{
    $score{language}{AVG}{$metric}{f} = sprintf("%.2f", $score{language}{SUM}{$metric}{f}/$n);
    $html .= "<td><b>$score{language}{AVG}{$metric}{f}</b></td>";
}
$html .= "</tr>\n";
$html .= "  </table>\n";
$html .= "  <h2>Qualitative F<sub>1</sub> Scores</h2>\n";
$html .= "  <p>The system output for each language was split into parts corresponding to individual source treebanks. ".
              "The scores then ignore errors in enhancement types for which the treebank lacks gold-standard annotation. ".
              "The column LAvgELAS shows the qualitative ELAS averaged over treebanks of the same language; ".
              "the final average in bold is averaged over languages rather than treebanks. ".
              "For comparison, the last column then shows the coarse ELAS F<sub>1</sub> for the given language.</p>\n";
$html .= "  <table>\n";
$html .= "    <tr><td><b>Treebank</b></td>";
foreach my $metric (@metrics)
{
    $html .= "<td><b>$metric</b></td>";
}
# Inform about omitted enhancements in the treebank.
$html .= "<td><b>Enhancements</b></td>";
# Add a column for the average of the qualitative ELAS scores over the treebanks of one language.
$html .= "<td><b>LAvgELAS</b></td>";
# Add a column for comparison with language coarse ELAS.
$html .= "<td><b>cf.</b></td>";
$html .= "</tr>\n";
foreach my $treebank (@treebanks)
{
    my $lh = $score{treebank}{$treebank};
    $html .= "    <tr><td>$treebank</td>";
    foreach my $metric (@metrics)
    {
        $html .= "<td>$lh->{$metric}{f}</td>";
        $score{treebank}{SUM}{$metric}{f} += $lh->{$metric}{f};
    }
    # Indicate which enhancements are missing in the treebank.
    my $omitted = $enhancements{$treebank} ne '' ? "($enhancements{$treebank})" : '';
    $html .= "<td>$omitted</td>";
    # Average the qualitative ELAS scores for each language.
    my $sum = $lh->{language}{QualitativeSUM}{ELAS}{f};
    my $cnt = $lh->{language}{QualitativeCNT};
    my $avg = $lh->{language}{QualitativeAVG}{ELAS}{f} = $cnt==0 ? 0 : sprintf("%.2f", $sum/$cnt);
    $html .= "<td>$avg</td>";
    # Add a column for comparison with language coarse ELAS.
    $html .= "<td>$lh->{language}{ELAS}{f}</td>";
    $html .= "</tr>\n";
}
$n = scalar(@treebanks);
$html .= "    <tr><td><b>Average</b></td>";
foreach my $metric (@metrics)
{
    $score{treebank}{AVG}{$metric}{f} = $n==0 ? 0 : sprintf("%.2f", $score{treebank}{SUM}{$metric}{f}/$n);
    $html .= "<td><b>$score{treebank}{AVG}{$metric}{f}</b></td>";
}
# Inform about omitted enhancements in the treebank.
$html .= "<td></td>";
# Add a column for the average of the qualitative ELAS scores over the treebanks of one language.
# We want to average these averages over languages, not over treebanks!
my $sum = 0;
$n = scalar(@languages);
foreach my $language (@languages)
{
    $sum += $score{language}{$language}{QualitativeAVG}{ELAS}{f};
}
$score{language}{QualitativeAVG}{ELAS}{f} = $n==0 ? 0 : sprintf("%.2f", $sum/$n);
$html .= "<td><b>$score{language}{QualitativeAVG}{ELAS}{f}</b></td>";
# Add a column for comparison with language coarse ELAS.
$html .= "<td></td>";
$html .= "</tr>\n";
$html .= "  </table>\n";
$html .= "</body>\n";
$html .= "</html>\n";
print($html);

	#!/usr/bin/env perl
	# Scans the folder with the evaluation results of a shared task submission.
	# Collects all scores and creates a HTML page that presents them.
	# Copyright © 2020 Dan Zeman <zeman@ufal.mff.cuni.cz>
	# License: GNU GPL

	use utf8;
	use open ':utf8';
	binmode(STDIN, ':utf8');
	binmode(STDOUT, ':utf8');
	binmode(STDERR, ':utf8');

	my $system_unpacked_folder = '/home/zeman/iwpt2020/_private/data/sysoutputs';

	# List of language codes and names.
	my %languages =
	(
	'ar' => 'Arabic',
	'bg' => 'Bulgarian',
	'cs' => 'Czech',
	'nl' => 'Dutch',
	'en' => 'English',
	'et' => 'Estonian',
	'fi' => 'Finnish',
	'fr' => 'French',
	'it' => 'Italian',
	'lv' => 'Latvian',
	'lt' => 'Lithuanian',
	'pl' => 'Polish',
	'ru' => 'Russian',
	'sk' => 'Slovak',
	'sv' => 'Swedish',
	'ta' => 'Tamil',
	'uk' => 'Ukrainian'
	);
	my @languages = sort {$languages{$a} cmp $languages{$b}} (keys(%languages));
	# List and ordering of treebanks for each language.
	my %dev_treebanks =
	(
	'ar' => ['Arabic-PADT'],
	'bg' => ['Bulgarian-BTB'],
	'cs' => ['Czech-FicTree', 'Czech-CAC', 'Czech-PDT'],
	'nl' => ['Dutch-Alpino', 'Dutch-LassySmall'],
	'en' => ['English-EWT'],
	'et' => ['Estonian-EDT'],
	'fi' => ['Finnish-TDT'],
	'fr' => ['French-Sequoia'],
	'it' => ['Italian-ISDT'],
	'lv' => ['Latvian-LVTB'],
	'lt' => ['Lithuanian-ALKSNIS'],
	'pl' => ['Polish-LFG', 'Polish-PDB'],
	'ru' => ['Russian-SynTagRus'],
	'sk' => ['Slovak-SNK'],
	'sv' => ['Swedish-Talbanken'],
	'ta' => ['Tamil-TTB'],
	'uk' => ['Ukrainian-IU']
	);
	my %test_treebanks =
	(
	'ar' => ['Arabic-PADT'],
	'bg' => ['Bulgarian-BTB'],
	'cs' => ['Czech-FicTree', 'Czech-CAC', 'Czech-PDT', 'Czech-PUD'],
	'nl' => ['Dutch-Alpino', 'Dutch-LassySmall'],
	'en' => ['English-EWT', 'English-PUD'],
	'et' => ['Estonian-EDT', 'Estonian-EWT'],
	'fi' => ['Finnish-TDT', 'Finnish-PUD'],
	'fr' => ['French-Sequoia', 'French-FQB'],
	'it' => ['Italian-ISDT'],
	'lv' => ['Latvian-LVTB'],
	'lt' => ['Lithuanian-ALKSNIS'],
	'pl' => ['Polish-LFG', 'Polish-PDB', 'Polish-PUD'],
	'ru' => ['Russian-SynTagRus'],
	'sk' => ['Slovak-SNK'],
	'sv' => ['Swedish-Talbanken', 'Swedish-PUD'],
	'ta' => ['Tamil-TTB'],
	'uk' => ['Ukrainian-IU']
	);
	# Enhancement type selection for each treebank (only for information in the table).
	my %enhancements =
	(
	'Arabic-PADT' => 'no xsubj',
	'Bulgarian-BTB' => '', # all
	'Czech-FicTree' => '', # all
	'Czech-CAC' => '', # all
	'Czech-PDT' => '', # all
	'Czech-PUD' => 'no codepend',
	'Dutch-Alpino' => '', # all
	'Dutch-LassySmall' => '', # all
	'English-EWT' => '', # all
	'English-PUD' => '', # all
	'Estonian-EDT' => 'no xsubj',
	'Estonian-EWT' => 'no codepend, no xsubj',
	'Finnish-TDT' => '', # all
	'Finnish-PUD' => 'no codepend, no xsubj',
	'French-Sequoia' => 'no gapping, relcl, case',
	'French-FQB' => 'no gapping, relcl, case',
	'Italian-ISDT' => '', # all
	'Latvian-LVTB' => '', # all
	'Lithuanian-ALKSNIS' => '', # all
	'Polish-LFG' => 'no gapping', # no gapping
	'Polish-PDB' => '', # all
	'Polish-PUD' => '', # all
	'Russian-SynTagRus' => '', # no coord depend
	'Slovak-SNK' => '', # all
	'Swedish-Talbanken' => '', # all
	'Swedish-PUD' => '', # all
	'Tamil-TTB' => 'no gapping, xsubj, relcl',
	'Ukrainian-IU' => '', # all
	);

	if(scalar(@ARGV)!=3)
	{
	die("Three arguments expected: team name, submission id, and dev\|test");
	}
	my $team = $ARGV[0];
	my $submid = $ARGV[1];
	my $portion = $ARGV[2];
	if($team !~ m/^[a-z0-9_]+$/)
	{
	die("Invalid team name '$team': must be [a-z0-9_]+");
	}
	if($submid !~ m/^[a-z0-9_]+$/)
	{
	die("Invalid submission id '$submid': must be [a-z0-9_]+");
	}
	if($portion !~ m/^(dev\|test)$/)
	{
	die("Unknown data portion '$portion', should be 'dev' or 'test'");
	}
	my $submission_folder = "$system_unpacked_folder/$team/$submid";
	my %treebanks = $portion eq 'dev' ? %dev_treebanks : %test_treebanks;

	foreach my $language (@languages)
	{
	# Read the evaluation scores.
	my $file = "$submission_folder/$language.eval.log";
	if(-f $file)
	{
	open(EVAL, $file) or die("Cannot read '$file': $!");
	while(<EVAL>)
	{
	s/\r?\n$//;
	if(m/^\w+.\\|.\d+/)
	{
	my @f = split(/\s\\|\s/, $_);
	my $metric = shift(@f);
	my $p = shift(@f);
	my $r = shift(@f);
	my $f = shift(@f);
	my $a = shift(@f);
	$score{language}{$language}{$metric} =
	{
	'p' => $p,
	'r' => $r,
	'f' => $f,
	'a' => $a
	};
	}
	}
	close(EVAL);
	}
	}
	my @treebanks;
	my $doing_dev;
	foreach my $language (@languages)
	{
	my $language_reliable = exists($score{language}{$language});
	foreach my $treebank (@{$treebanks{$language}})
	{
	push(@treebanks, $treebank);
	my $tcode = lc($treebank);
	$tcode =~ s/^.+-//;
	# Read the evaluation scores.
	my $file = "$submission_folder/pertreebank/${language}_$tcode-ud";
	if(-e "$file-dev.eval.log" && -e "$file-test.eval.log")
	{
	die("Both dev and test eval.log exist for '$file'");
	}
	elsif(-e "$file-dev.eval.log")
	{
	$file .= '-dev.eval.log';
	if(!defined($doing_dev))
	{
	$doing_dev = 1;
	}
	elsif($doing_dev==0)
	{
	die("Both dev and test eval logs are present in the per-treebank folder.");
	}
	}
	elsif(-e "$file-test.eval.log")
	{
	$file .= '-test.eval.log';
	if(!defined($doing_dev))
	{
	$doing_dev = 0;
	}
	elsif($doing_dev==1)
	{
	die("Both dev and test eval logs are present in the per-treebank folder.");
	}
	}
	# Score of a treebank is not reliable if the score for the language does not exist.
	if(-f $file && $language_reliable)
	{
	open(EVAL, $file) or die("Cannot read '$file': $!");
	while(<EVAL>)
	{
	s/\r?\n$//;
	if(m/^\w+.\\|.\d+/)
	{
	my @f = split(/\s\\|\s/, $_);
	my $metric = shift(@f);
	my $p = shift(@f);
	my $r = shift(@f);
	my $f = shift(@f);
	my $a = shift(@f);
	$score{treebank}{$treebank}{$metric} =
	{
	'p' => $p,
	'r' => $r,
	'f' => $f,
	'a' => $a
	};
	}
	}
	close(EVAL);
	}
	# For comparison, add a copy of (link to) the language coarse scores to each treebank.
	$score{treebank}{$treebank}{language} = $score{language}{$language};
	# Sum up (and average) the qualitative ELAS scores for each language.
	$score{language}{$language}{QualitativeSUM}{ELAS}{f} += $score{treebank}{$treebank}{ELAS}{f};
	$score{language}{$language}{QualitativeCNT}++;
	}
	}
	my $html = "<html>\n";
	$html .= "<head>\n";
	$html .= " <title>IWPT Results of $team/$submid</title>\n";
	$html .= "</head>\n";
	$html .= "<body>\n";
	$html .= " <h1>IWPT 2020 Shared Task Results of <span style='color:blue'>$team</span>/$submid</h1>\n";
	my @metrics = qw(Tokens Words Sentences UPOS XPOS UFeats AllTags Lemmas UAS LAS CLAS MLAS BLEX EULAS ELAS);
	$html .= " <h2>Coarse F<sub>1</sub> Scores</h2>\n";
	$html .= " <p>Each score pertains to the combined test set of the language, without distinguishing individual treebanks and the enhancement types they annotate. The last line shows the macro-average over languages.</p>\n";
	$html .= " <table>\n";
	$html .= " <tr><td><b>Language</b></td>";
	foreach my $metric (@metrics)
	{
	$html .= "<td><b>$metric</b></td>";
	}
	$html .= "</tr>\n";
	foreach my $language (@languages)
	{
	my $lh = $score{language}{$language};
	$html .= " <tr><td>$languages{$language}</td>";
	foreach my $metric (@metrics)
	{
	$html .= "<td>$lh->{$metric}{f}</td>";
	$score{language}{SUM}{$metric}{f} += $lh->{$metric}{f};
	}
	$html .= "</tr>\n";
	}
	my $n = scalar(@languages);
	$html .= " <tr><td><b>Average</b></td>";
	foreach my $metric (@metrics)
	{
	$score{language}{AVG}{$metric}{f} = sprintf("%.2f", $score{language}{SUM}{$metric}{f}/$n);
	$html .= "<td><b>$score{language}{AVG}{$metric}{f}</b></td>";
	}
	$html .= "</tr>\n";
	$html .= " </table>\n";
	$html .= " <h2>Qualitative F<sub>1</sub> Scores</h2>\n";
	$html .= " <p>The system output for each language was split into parts corresponding to individual source treebanks. ".
	"The scores then ignore errors in enhancement types for which the treebank lacks gold-standard annotation. ".
	"The column LAvgELAS shows the qualitative ELAS averaged over treebanks of the same language; ".
	"the final average in bold is averaged over languages rather than treebanks. ".
	"For comparison, the last column then shows the coarse ELAS F<sub>1</sub> for the given language.</p>\n";
	$html .= " <table>\n";
	$html .= " <tr><td><b>Treebank</b></td>";
	foreach my $metric (@metrics)
	{
	$html .= "<td><b>$metric</b></td>";
	}
	# Inform about omitted enhancements in the treebank.
	$html .= "<td><b>Enhancements</b></td>";
	# Add a column for the average of the qualitative ELAS scores over the treebanks of one language.
	$html .= "<td><b>LAvgELAS</b></td>";
	# Add a column for comparison with language coarse ELAS.
	$html .= "<td><b>cf.</b></td>";
	$html .= "</tr>\n";
	foreach my $treebank (@treebanks)
	{
	my $lh = $score{treebank}{$treebank};
	$html .= " <tr><td>$treebank</td>";
	foreach my $metric (@metrics)
	{
	$html .= "<td>$lh->{$metric}{f}</td>";
	$score{treebank}{SUM}{$metric}{f} += $lh->{$metric}{f};
	}
	# Indicate which enhancements are missing in the treebank.
	my $omitted = $enhancements{$treebank} ne '' ? "($enhancements{$treebank})" : '';
	$html .= "<td>$omitted</td>";
	# Average the qualitative ELAS scores for each language.
	my $sum = $lh->{language}{QualitativeSUM}{ELAS}{f};
	my $cnt = $lh->{language}{QualitativeCNT};
	my $avg = $lh->{language}{QualitativeAVG}{ELAS}{f} = $cnt==0 ? 0 : sprintf("%.2f", $sum/$cnt);
	$html .= "<td>$avg</td>";
	# Add a column for comparison with language coarse ELAS.
	$html .= "<td>$lh->{language}{ELAS}{f}</td>";
	$html .= "</tr>\n";
	}
	$n = scalar(@treebanks);
	$html .= " <tr><td><b>Average</b></td>";
	foreach my $metric (@metrics)
	{
	$score{treebank}{AVG}{$metric}{f} = $n==0 ? 0 : sprintf("%.2f", $score{treebank}{SUM}{$metric}{f}/$n);
	$html .= "<td><b>$score{treebank}{AVG}{$metric}{f}</b></td>";
	}
	# Inform about omitted enhancements in the treebank.
	$html .= "<td></td>";
	# Add a column for the average of the qualitative ELAS scores over the treebanks of one language.
	# We want to average these averages over languages, not over treebanks!
	my $sum = 0;
	$n = scalar(@languages);
	foreach my $language (@languages)
	{
	$sum += $score{language}{$language}{QualitativeAVG}{ELAS}{f};
	}
	$score{language}{QualitativeAVG}{ELAS}{f} = $n==0 ? 0 : sprintf("%.2f", $sum/$n);
	$html .= "<td><b>$score{language}{QualitativeAVG}{ELAS}{f}</b></td>";
	# Add a column for comparison with language coarse ELAS.
	$html .= "<td></td>";
	$html .= "</tr>\n";
	$html .= " </table>\n";
	$html .= "</body>\n";
	$html .= "</html>\n";
	print($html);