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| #!/usr/bin/perl
use strict;
use warnings;
use feature qw(:5.10);
use Fcntl qw(SEEK_SET);
use Getopt::Long;
use Data::Dumper;
use File::Util;
use List::Util qw(min max sum);
use List::MoreUtils qw(uniq indexes);
use Time::ETA;
use Term::ProgressBar;
my $VERSION = "6";
my ($systeminfo, $meminfo);
eval "use Win32::SystemInfo;";
$systeminfo = !$@;
if (!$systeminfo) {
eval "use Sys::MemInfo qw(freemem totalmem);";
$meminfo = !$@;
}
warn "Neither module Win32::SystemInfo, nor Sys:MemInfo is installed\n" if !$systeminfo && !$meminfo;
$|++;
# taille sequence dans le fichier initiale, du 2e fichier et frequence
my ($n, $m, $f_opt, $size_max, $debug, $save_mem) = (1) x 3;
my ($in, $out, $result) = (qw(Texte_FR.txt Texte_EN.txt));
my ($group_opt, $group_start, $group_count) = (100, undef, undef);
GetOptions ('n=i' => \$n, 'm=i' => \$m, 'f=s' => \$f_opt, 'in=s' => \$in, 'out=s' => \$out, 'res=s' => \$result, 'd' => \$debug, 's' => \$save_mem, 'g=s'=> \$group_opt);
$size_max = $ARGV[0];
$result //= "MMIv$VERSION-m$m-n$n-f$f_opt".($size_max ? "-$size_max" : "").".txt";
(my $group, $group_start, $group_count) = split ":", $group_opt;
my ($f_m, $f_n) = split ":", $f_opt;
my $file_size = $size_max // File::Util->line_count($in);
sub get_x_gram($$;$) {
my ($words, $x_gram_size, $filter_cb) = @_;
$words = [ split /\s+/, trim($words) ] if !ref $words;
my @x_gram = map { "@{$words}[$_ .. $_ + $x_gram_size-1]" } 0 .. @$words-$x_gram_size;
return !$filter_cb ? @x_gram : grep $filter_cb->($_), @x_gram;
}
sub trim($) {
my $string = shift;
if (ref($string)) {
$$string =~ s/^\s+|\s+$//g;
}
else {
$string =~ s/^\s+|\s+$//g;
return $string;
}
}
my $log2 = log(2);
sub log2($) {
my $n = shift;
return log($n)/$log2;
}
my $print_progress = 0.5;
{
sub get_available_memory;
my %mem;
my $avail_mem = get_available_memory;
my $initial_mem = $avail_mem;
sub get_available_memory {
my ($used_mem, $new_avail_mem);
if ($systeminfo) {
Win32::SystemInfo::MemoryStatus(\%mem, "MB");
#say "Current mem: ", Data::Dumper->Dump([\%mem], [qw(*mem)]);
$new_avail_mem = $mem{AvailPhys};
}
elsif ($meminfo) {
$new_avail_mem = freemem() / 1024;
}
$used_mem = ($avail_mem // 0) - $new_avail_mem;
$avail_mem = $new_avail_mem;
return wantarray ? ($avail_mem, $used_mem, $initial_mem - $new_avail_mem) : $avail_mem;
}
}
sub remove_x_gram($$$;$) {
#my ($x_grams, @x_gram_to_remove) = @_;
my ($x_grams, $x_gram_count, $label, $print) = @_;
if (!$save_mem) {
my ($x_gram_size, $remove_progress, $next_update);
$x_gram_size = split /\s+/, $x_grams->[0]->[0] // "";
if ($print) {
$remove_progress = Term::ProgressBar->new({ ETA => "linear", count => scalar(@$x_grams), name => $label });
$remove_progress->max_update_rate($print_progress);
$next_update = 0;
}
else {
print "$label ", scalar(@$x_grams);
}
my $i = 0;
foreach my $x_gram (@$x_grams) {
$next_update = $remove_progress->update($i) if $print && $i >= $next_update;
next if !@$x_gram;
if (ref($x_gram_count) eq 'HASH') {
splice @$x_gram, $_, 1, foreach grep !exists $x_gram_count->{$x_gram->[$_]}, reverse 0 .. $#{$x_gram};
}
else {
my @x_gram_to_remove;
@x_gram_to_remove = ref($x_gram_count) eq 'ARRAY' ? @$x_gram_count : $x_gram_count;
splice @$x_gram, $_, 1 foreach reverse indexes { $_ ~~ @x_gram_to_remove } @$x_gram;
}
$i++
}
say "";
}
else {
# Impossible to remove x_gram from the complete sentence as each word of the x_gram can be used in
# another adjoining x_gram.
# Filter must be done during x_gram generation
}
}
sub count_m_n_gram($$$$;$$) {
my ($files, $x_grams_sizes, $x_gram_filters, $file_size, $label, $keep_x_grams) = @_;
my (@m_grams, @n_grams) = ();
my (%m_gram_count, %n_gram_count) = ();
seek $_, 0, SEEK_SET foreach @$files;
my $count_progress = Term::ProgressBar->new({ ETA => "linear", count => $file_size, name => $label });
$count_progress->max_update_rate($print_progress);
my $next_update = 0;
my ($m_file, $n_file) = @$files;
while (defined(my $m_words = <$m_file>)) {
last if $. > $file_size;
$next_update = $count_progress->update($.) if $. >= $next_update;
my @m_gram = get_x_gram($m_words, $x_grams_sizes->[0]);
push @m_grams, $keep_x_grams ? [ @m_gram ] : $m_words;
$m_gram_count{$_}++ foreach @m_gram;
my $n_words = <$n_file>;
my @n_gram = get_x_gram($n_words, $x_grams_sizes->[1]);
push @n_grams, $keep_x_grams ? [ @n_gram ] : $n_words;
$n_gram_count{$_}++ foreach @n_gram;
}
seek $_, 0, SEEK_SET foreach @$files;
# delete non frequent enought x_grams
say "";
my @rare_x_gram;
if ($x_gram_filters->[0]) {
@rare_x_gram = grep $m_gram_count{$_} < $x_gram_filters->[0], keys %m_gram_count;
delete @m_gram_count{@rare_x_gram};
remove_x_gram(\@m_grams, \%m_gram_count, "Remove non frequent enough $m-mgrams");
}
if ($x_gram_filters->[1]) {
@rare_x_gram = grep $n_gram_count{$_} < $x_gram_filters->[1], keys %n_gram_count;
delete @n_gram_count{@rare_x_gram};
remove_x_gram(\@n_grams, \%n_gram_count, "Remove non frequent enough $n-ngrams");
}
return sum(values %m_gram_count), \@m_grams, \%m_gram_count, sum(values %n_gram_count), \@n_grams, \%n_gram_count;
}
my $previous_group_key_count;
sub compute_group($$$$$$$$$$$$$) {
my ($RESULT, $group_size, $m_gram_in_group, $m_grams, $m, $m_gram_count, $m_gram_total, $n_grams, $n, $n_gram_count, $n_gram_total, $key_total, $label) = @_;
my $group_progress = Term::ProgressBar->new({ ETA => "linear", count => scalar(@$m_grams), name => "Counting rules $label" });
$group_progress->max_update_rate($print_progress);
my ($next_update, $m_gram_position) = (0, 0);
my %key_count;
foreach my $m_gram_line (@$m_grams) {
$next_update = $group_progress->update($m_gram_position) if $m_gram_position >= $next_update;
$m_gram_line = [ get_x_gram($m_gram_line, $m) ] if !ref($m_gram_line);
my $n_gram_line = $n_grams->[$m_gram_position++];
$n_gram_line = [ get_x_gram($n_gram_line, $n) ] if !ref($n_gram_line);
# filter m_grams of current group
foreach my $m_gram (grep exists $m_gram_in_group->{$_}, @$m_gram_line) {
foreach my $n_gram (grep exists $n_gram_count->{$_}, @$n_gram_line) {
$key_count{$m_gram}->{$n_gram}++;
}
}
}
$group_progress->update($m_gram_position);
say sprintf "Memory: available: %dMo, used since last call: %dMo, total used: %dMo", get_available_memory;
my $group_key_count = sum(map { scalar(keys %{$key_count{$_}}) } keys %key_count);
if ($group_key_count) {
#say "\n$group_key_count (" . (keys %key_count) . " m-grams) keys in the group";
say "";
$group_progress = Term::ProgressBar->new({ ETA => "linear", count => $group_key_count, name => "Computing $group_key_count rules proba (" . (keys %key_count) . " m-grams)" });
$group_progress->max_update_rate($print_progress);
($next_update, my $key_group_position) = (0, 0);
foreach my $m_gram (sort keys %key_count) {
foreach my $n_gram (sort keys %{$key_count{$m_gram}}) {
$next_update = $group_progress->update($key_group_position) if $key_group_position >= $next_update;
my $mmi = $key_count{$m_gram}->{$n_gram};
my $mmi_str = qq{(\$key_count{$m_gram}->{$n_gram}} if $debug;
my $mmi_num = qq{($mmi} if $debug;
$mmi /= $key_total;
if ($debug) {
$mmi_str .= qq{ / \$key_total)};
$mmi_num .= qq{ / $key_total)};
}
if ($debug) {
$mmi_str .= qq{ * log2(\$mmi / (\$m_gram_count{$m_gram}/\$m_gram_total)*(\$n_gram_count{$n_gram}/\$n_gram_total))};
$mmi_num .= qq{ * log2($mmi / ($m_gram_count->{$m_gram}/$m_gram_total)*($n_gram_count->{$n_gram}/$n_gram_total))};
say { $RESULT } "$m_gram > $n_gram > ", $mmi_str;
say { $RESULT } "$m_gram > $n_gram > ", $mmi_num;
}
$mmi *= log2($mmi/(($m_gram_count->{$m_gram}/$m_gram_total)*($n_gram_count->{$n_gram}/$n_gram_total)));
printf { $RESULT } "$m_gram > $n_gram > %.15f\n", $mmi;
$key_group_position++;
}
}
$group_progress->update($group_key_count);
$group_size *= min(10, $previous_group_key_count / $group_key_count) if $previous_group_key_count;
say "";
}
else {
say "\nNo key $label";
}
$previous_group_key_count = $group_key_count if !defined $previous_group_key_count;
return int($group_size);
}
say "File size to treat: ".File::Util->line_count($in).($size_max ? " limited to $file_size" : "");
say "Partial treatment of $group_count groups of $group lines" if $group_count;
say "Starting at line $group_start" if $group_start;
say "Memory: available: " . scalar(get_available_memory) . "Mo";
open my $IN, "<", $in or die "Can't open $in for reading: $!\n";
open my $OUT, "<", $out or die "Can't open $out for reading: $!\n";
open my $RESULT, $group_start ? ">>" : ">", $result or die "Can't open $result for writing: $!\n";
# read $IN and $OUT entirely + create x-grams and count them
my ($m_gram_total, $m_grams, $m_gram_count, $n_gram_total, $n_grams, $n_gram_count) =
count_m_n_gram([$IN, $OUT], [$m, $n], [$f_m, $f_n], $file_size, "Loading x-grams ", !$save_mem);
undef $IN;
undef $OUT;
say "Total m-grams: $m_gram_total (".(keys %$m_gram_count)." unique m-gram)";
say "Total n-grams: $n_gram_total (".(keys %$n_gram_count)." unique n-gram)";
say sprintf "Memory: available: %dMo, used since last call: %dMo, total used: %dMo", get_available_memory;
my $key_total = $m_gram_total * $n_gram_total;
say "key_total = $key_total";
my ($next_update, $m_gram_position, $m_gram_lines) = (0, 0, scalar(@$m_grams));
my $current_group = $group;
while ($m_gram_position < @$m_grams && (!defined $group_count || $group_count)) {
$current_group = $group_start ? $group_start : $group;
my @m_gram_group = @{$m_grams}[ $m_gram_position .. min($#{$m_grams}, $m_gram_position+$current_group-1) ];
my $m_gram_in_group = { map { $_ => 1 } map { ref $_ ? @$_ : get_x_gram($_, $m) } @m_gram_group };
undef @m_gram_group;
my $new_group;
if (!$group_start) {
$new_group = compute_group($RESULT, $current_group,
$m_gram_in_group, $m_grams, $m, $m_gram_count, $m_gram_total,
$n_grams, $n, $n_gram_count, $n_gram_total, $key_total,
"for group $m_gram_position/$m_gram_lines (group size $group)");
$group_count-- if $group_count;
}
else {
undef $group_start;
}
delete $m_gram_count->{$_} foreach keys %$m_gram_in_group;
say sprintf "Memory: available: %dMo, used since last call: %dMo, total used: %dMo", get_available_memory;
remove_x_gram($m_grams, $m_gram_count, "\nRemoving already treated ${m}-mgrams");
$m_gram_position += $current_group;
if ($new_group) {
$group = max($group_opt, min($m_gram_lines-$m_gram_position, $new_group));
}
}
say "Last line processed: $m_gram_position";
exit; |
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