train-factored-phrase-model.perl.svn-base

解码器是基于短语的统计机器翻译系统的核心模块

	elsif ($o_following eq 'swap') {  $swap_following_f++;  $swap_following_fe++; }
	elsif ($o_following eq 'other'){ $other_following_f++; $other_following_fe++; }
	else { print STDERR "buggy line (o_following:$o_following): $_\n"; }

    }
    if (defined($REORDERING_MODEL{"f"})) {
	&store_reordering_f();
    }
    if (defined($REORDERING_MODEL{"fe"})) {
	&store_reordering_fe();
    }
    if (! $debug) { safesystem("rm $___EXTRACT_FILE.$factor.o.sorted") or die;}
}

sub store_reordering_f {
    my $total_previous_f = $mono_previous_f+$swap_previous_f+$other_previous_f;
    my $total_following_f = $mono_following_f+$swap_following_f+$other_following_f;
    if(defined($REORDERING_MODEL{"orientation-f"})) {
 	printf OF ("%s ||| %.5f %.5f %.5f\n",
		   $f_current, 
		   $mono_previous_f/$total_previous_f,
		   $swap_previous_f/$total_previous_f,
		   $other_previous_f/$total_previous_f);
    }
    if(defined($REORDERING_MODEL{"orientation-bidirectional-f"})) {
	printf OBF ("%s ||| %.5f %.5f %.5f %.5f %.5f %.5f\n",
		    $f_current, 
		    $mono_previous_f/$total_previous_f,
		    $swap_previous_f/$total_previous_f,
		    $other_previous_f/$total_previous_f,
		    $mono_following_f/$total_following_f,
		    $swap_following_f/$total_following_f,
		    $other_following_f/$total_following_f);
    }
    if(defined($REORDERING_MODEL{"monotonicity-f"})) {
	printf MF ("%s ||| %.5f %.5f\n",
		  $f_current, 
		   $mono_previous_f/$total_previous_f,
		   ($swap_previous_f+$other_previous_f)/$total_previous_f);
    }
    if(defined($REORDERING_MODEL{"monotonicity-bidirectional-f"})) {
	printf MBF ("%s ||| %.5f %.5f %.5f %.5f\n",
		    $f_current, 
		    $mono_previous_f/$total_previous_f,
		    ($swap_previous_f+$other_previous_f)/$total_previous_f,
		    $mono_following_f/$total_following_f,
		    ($swap_following_f+$other_following_f)/$total_following_f);
    }
}

sub store_reordering_fe {
    my $total_previous_fe = $mono_previous_fe+$swap_previous_fe+$other_previous_fe;
    my $total_following_fe = $mono_following_fe+$swap_following_fe+$other_following_fe;
    
    if(defined($REORDERING_MODEL{"orientation-fe"})) {
 	printf OFE ("%s ||| %s ||| %.5f %.5f %.5f\n",
		   $f_current, $e_current, 
		   $mono_previous_fe/$total_previous_fe,
		   $swap_previous_fe/$total_previous_fe,
		   $other_previous_fe/$total_previous_fe);
    }
    if(defined($REORDERING_MODEL{"orientation-bidirectional-fe"})) {
	printf OBFE ("%s ||| %s ||| %.5f %.5f %.5f %.5f %.5f %.5f\n",
		    $f_current, $e_current, 
		    $mono_previous_fe/$total_previous_fe,
		    $swap_previous_fe/$total_previous_fe,
		    $other_previous_fe/$total_previous_fe,
		    $mono_following_fe/$total_following_fe,
		    $swap_following_fe/$total_following_fe,
		    $other_following_fe/$total_following_fe);
    }
    if(defined($REORDERING_MODEL{"monotonicity-fe"})) {
	printf MFE ("%s ||| %s ||| %.5f %.5f\n",
		   $f_current, $e_current, 
		   $mono_previous_fe/$total_previous_fe,
		   ($swap_previous_fe+$other_previous_fe)/$total_previous_fe);
    }
    if(defined($REORDERING_MODEL{"monotonicity-bidirectional-fe"})) {
	printf MBFE ("%s ||| %s ||| %.5f %.5f %.5f %.5f\n",
		    $f_current, $e_current, 
		    $mono_previous_fe/$total_previous_fe,
		    ($swap_previous_fe+$other_previous_fe)/$total_previous_fe,
		    $mono_following_fe/$total_following_fe,
		    ($swap_following_fe+$other_following_fe)/$total_following_fe);
    }
}

### (8) LEARN GENERATION MODEL

my $factor_e_source;
sub get_generation_factored {
    print STDERR "(8) learn generation model @ ".`date`;
    if (defined $___GENERATION_FACTORS) {
      foreach my $f (split(/\+/,$___GENERATION_FACTORS)) {
	$factor = $f;
	($factor_e_source,$factor_e) = split(/\-/,$factor);
	&get_generation();
      }
    } else {
      print STDERR "  no generation model requested, skipping step\n";
    }
}

sub get_generation {
    print STDERR "(8) [$factor] generate generation table @ ".`date`;
    my (%WORD_TRANSLATION,%TOTAL_FOREIGN,%TOTAL_ENGLISH);

    my %INCLUDE_SOURCE;
    foreach my $factor (split(/,/,$factor_e_source)) {
	
	$INCLUDE_SOURCE{$factor} = 1;
    }
    my %INCLUDE;
    foreach my $factor (split(/,/,$factor_e)) {
	$INCLUDE{$factor} = 1;
    }

    my (%GENERATION,%GENERATION_TOTAL_SOURCE,%GENERATION_TOTAL_TARGET);
    open(E,$___CORPUS.".".$___E) or die "Can't read ".$___CORPUS.".".$___E;
    $alignment_id=0;
    while(<E>) {
	chomp;
	foreach (split) {
	    my @FACTOR = split(/\|/);

	    my ($source,$target);
	    my $first_factor = 1;
	    foreach my $factor (split(/,/,$factor_e_source)) {
		$source .= "|" unless $first_factor;
		$first_factor = 0;
		$source .= $FACTOR[$factor];
	    }

	    $first_factor = 1;
	    foreach my $factor (split(/,/,$factor_e)) {
		$target .= "|" unless $first_factor;
		$first_factor = 0;
		$target .= $FACTOR[$factor];
	    }	    
	    $GENERATION{$source}{$target}++;
	    $GENERATION_TOTAL_SOURCE{$source}++;
	    $GENERATION_TOTAL_TARGET{$target}++;
	}
    } 
    close(E);
 
    open(GEN,">$___MODEL_DIR/generation.$factor") or die "Can't write $___MODEL_DIR/generation.$factor";
    foreach my $source (keys %GENERATION) {
	foreach my $target (keys %{$GENERATION{$source}}) {
	    printf GEN ("%s %s %.7f %.7f\n",$source,$target,
			$GENERATION{$source}{$target}/$GENERATION_TOTAL_SOURCE{$source},
			$GENERATION{$source}{$target}/$GENERATION_TOTAL_TARGET{$target});
	}
    }
    close(GEN);
    safesystem("rm -f $___MODEL_DIR/generation.$factor.gz") or die;
    safesystem("gzip $___MODEL_DIR/generation.$factor") or die;
}

### (9) CREATE CONFIGURATION FILE

sub create_ini {
    print STDERR "(9) create moses.ini @ ".`date`;
    
    &full_path(\$___MODEL_DIR);
    &full_path(\$___VCB_E);
    &full_path(\$___VCB_F);
    open(INI,">$___MODEL_DIR/moses.ini") or die "Can't write $___MODEL_DIR/moses.ini";
    print INI "#########################
### MOSES CONFIG FILE ###
#########################
\n";

    if (defined $___TRANSLATION_FACTORS) {
      print INI "# input factors\n";
      print INI "[input-factors]\n";
      my $INPUT_FACTOR_MAX = 0;
      foreach my $table (split /\+/, $___TRANSLATION_FACTORS) {
	      my ($factor_list, $output) = split /-+/, $table;
        foreach (split(/,/,$factor_list)) {
          $INPUT_FACTOR_MAX = $_ if $_>$INPUT_FACTOR_MAX;
        }  
      }
      for (my $c = 0; $c <= $INPUT_FACTOR_MAX; $c++) { print INI "$c\n"; }
    } else {
      die "No translation steps defined, cannot prepare [input-factors] section\n";
    }


    my %stepsused;
    print INI "\n# mapping steps
[mapping]\n";
   foreach (split(/,/,$___DECODING_STEPS)) {
     s/t/T /g; 
     s/g/G /g;
     my ($type, $num) = split /\s+/;
     $stepsused{$type} = $num+1 if !defined $stepsused{$type} || $stepsused{$type} < $num+1;
     print INI $_."\n";
   }
   print INI "\n# translation tables: source-factors, target-factors, number of scores, file 
[ttable-file]\n";
   my $num_of_ttables = 0;
   foreach my $f (split(/\+/,$___TRANSLATION_FACTORS)) {
     $num_of_ttables++;
     my $ff = $f;
     $ff =~ s/\-/ /;
     print INI "$ff 5 $___MODEL_DIR/phrase-table.$f.gz\n";
   }
   if ($num_of_ttables != $stepsused{"T"}) {
     print STDERR "WARNING: Your [mapping-steps] require translation steps up to id $stepsused{T} but you defined translation steps 0..$num_of_ttables\n";
     exit 1 if $num_of_ttables < $stepsused{"T"}; # fatal to define less
   }

    my $weights_per_generation_model = 2;

    if (defined $___GENERATION_FACTORS) {
      print INI "\n# generation models: source-factors, target-factors, number-of-weights, filename\n";
      print INI "[generation-file]\n";
      my $cnt = 0;
      foreach my $f (split(/\+/,$___GENERATION_FACTORS)) {
        $cnt++;
        my $ff = $f;
        $ff =~ s/\-/ /;
        print INI "$ff $weights_per_generation_model $___MODEL_DIR/generation.$f.gz\n";
      }
      if ($cnt != $stepsused{"G"}) {
        print STDERR "WARNING: Your [mapping-steps] require generation steps up to id $stepsused{G} but you defined generation steps 0..$cnt\n";
        exit 1 if $cnt < $stepsused{"G"}; # fatal to define less
      }
    } else {
      print INI "\n# no generation models, no generation-file section\n";
    }

print INI "\n# language models: type(srilm/irstlm), factors, order, file
[lmodel-file]\n";
  foreach my $lm (@___LM) {
    my ($f, $o, $fn) = @$lm;
    my $type = 0; # default to srilm
    print INI "$type $f $o $fn\n";
  }

print INI "\n\n# limit on how many phrase translations e for each phrase f are loaded
# 0 = all elements loaded
[ttable-limit]
20\n";
  foreach(1..$num_of_ttables) {
    print INI "0\n";
  }

  my $weight_d_count = 0;
  if ($___REORDERING ne "distance") {
    my $file = "# distortion (reordering) files\n[distortion-file]\n";
    my $factor_i = 0;
    foreach my $factor (split(/\+/,$___REORDERING_FACTORS)) {
	foreach my $r (keys %REORDERING_MODEL) {
	    next if $r eq "fe" || $r eq "f";
	    next if $r eq "distance" && $factor_i>0;
	    if ($r eq "distance") { $weight_d_count++; } 
	    else {
		my $type = $r;
		$type =~ s/orientation/msd/;

		$r =~ s/-bidirectional/.bi/;
		$r =~ s/-f/.f/;
		$r =~ s/orientation/orientation-table.$factor/;
		$r =~ s/monotonicity/monotonicity-table.$factor/;
		
		my $w;
		if ($r =~ /orient/) { $w = 3; } else { $w = 1; }
		if ($r =~ /bi/) { $w *= 2; }
		$weight_d_count += $w;
		$file .= "$factor $type $w $___MODEL_DIR/$r.$___REORDERING_SMOOTH.gz\n";
	    }
	}
        $factor_i++;
    }
    print INI $file."\n";
  }
  else {
    $weight_d_count = 1;
  }
  
  print INI "# distortion (reordering) weight\n[weight-d]\n";
  for(my $i=0;$i<$weight_d_count;$i++) { 
    print INI "".(0.6/(scalar keys %REORDERING_MODEL))."\n";
  }
  print INI "\n# language model weights
[weight-l]\n";
  my $lmweighttotal = 0.5;
  foreach(1..scalar @___LM) {
    printf INI "%.4f\n", $lmweighttotal / scalar @___LM;
  }

print INI "\n\n# translation model weights
[weight-t]\n";
   foreach my $f (split(/\+/,$___TRANSLATION_FACTORS)) {
     print INI "0.2\n0.2\n0.2\n0.2\n0.2\n";
   }

    if (defined $___GENERATION_FACTORS) {
      print INI "\n# generation model weights, for each model $weights_per_generation_model weights\n";
      print INI "[weight-generation]\n";
      foreach my $f (split(/\+/,$___GENERATION_FACTORS)) {
        print INI "0.3\n0\n";
      }
    } else {
      print INI "\n# no generation models, no weight-generation section\n";
    }

print INI "\n# word penalty
[weight-w]
-1

[distortion-limit]
6
";

  # only set the factor delimiter if it is non-standard
  unless ($___FACTOR_DELIMITER eq '|') {
    print INI "\n# delimiter between factors in input\n[factor-delimiter]\n$___FACTOR_DELIMITER\n\n"
  }

  close(INI);
}

sub full_path {
    my ($PATH) = @_;
    return if $$PATH =~ /^\//;
    my $dir = `pawd 2>/dev/null`;
    if(!$dir){$dir = `pwd`;}
    chomp $dir;
    $$PATH = $dir."/".$$PATH;
    $$PATH =~ s/[\r\n]//g;
    $$PATH =~ s/\/\.\//\//g;
    $$PATH =~ s/\/+/\//g;
    my $sanity = 0;
    while($$PATH =~ /\/\.\.\// && $sanity++<10) {
	$$PATH =~ s/\/+/\//g;
	$$PATH =~ s/\/[^\/]+\/\.\.\//\//g;
    }
    $$PATH =~ s/\/[^\/]+\/\.\.$//;
    $$PATH =~ s/\/+$//;
}

sub safesystem {
  print STDERR "Executing: @_\n";
  system(@_);
  if ($? == -1) {
      print STDERR "Failed to execute: @_\n  $!\n";
      exit(1);
  }
  elsif ($? & 127) {
      printf STDERR "Execution of: @_\n  died with signal %d, %s coredump\n",
          ($? & 127),  ($? & 128) ? 'with' : 'without';
      exit(1);
  }
  else {
    my $exitcode = $? >> 8;
    print STDERR "Exit code: $exitcode\n" if $exitcode;
    return ! $exitcode;
  }
}