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#!/usr/bin/perl -w
use strict;
my $SCRIPT_DIR; BEGIN { use Cwd qw/ abs_path cwd /; use File::Basename; $SCRIPT_DIR = dirname(abs_path($0)); push @INC, $SCRIPT_DIR; }
use Getopt::Long "GetOptions";
my $GZIP = 'gzip';
my $ZCAT = 'gunzip -c';
my $BASE_PHRASE_MAX_SIZE = 10;
my $ITEMS_IN_MEMORY = 3000000; # cache size in extractors
my $NUM_TOPICS = 50;
my $NUM_SAMPLES = 100;
my $CONTEXT_SIZE = 1;
my $BIDIR = 1;
my $EXTOOLS = "$SCRIPT_DIR/../../extools";
die "Can't find extools: $EXTOOLS" unless -e $EXTOOLS && -d $EXTOOLS;
my $PYPTOOLS = "$SCRIPT_DIR/../pyp-topics/src";
die "Can't find extools: $PYPTOOLS" unless -e $PYPTOOLS && -d $PYPTOOLS;
my $PYPSCRIPTS = "$SCRIPT_DIR/../pyp-topics/scripts";
die "Can't find extools: $PYPSCRIPTS" unless -e $PYPSCRIPTS && -d $PYPSCRIPTS;
my $REDUCER = "$EXTOOLS/mr_stripe_rule_reduce";
my $C2D = "$PYPSCRIPTS/contexts2documents.py";
my $S2L = "$PYPSCRIPTS/spans2labels.py";
my $PYP_TOPICS_TRAIN="$PYPTOOLS/pyp-topics-train";
my $SORT_KEYS = "$SCRIPT_DIR/scripts/sort-by-key.sh";
my $EXTRACTOR = "$EXTOOLS/extractor";
my $FILTER = "$EXTOOLS/filter_grammar";
my $SCORER = "$EXTOOLS/score_grammar";
my $TOPIC_TRAIN = "$PYPTOOLS/pyp-topics-train";
assert_exec($SORT_KEYS, $REDUCER, $EXTRACTOR, $FILTER, $SCORER, $PYP_TOPICS_TRAIN, $S2L, $C2D, $TOPIC_TRAIN);
my $OUTPUT = './giwork';
usage() unless &GetOptions('base_phrase_max_size=i' => \$BASE_PHRASE_MAX_SIZE,
'output=s' => \$OUTPUT,
'topics=i' => \$NUM_TOPICS,
'trg_context=i' => \$CONTEXT_SIZE,
'samples=i' => \$NUM_SAMPLES,
);
mkdir($OUTPUT);
die "Couldn't create output direction: $OUTPUT" unless -d $OUTPUT;
print STDERR "OUTPUT DIRECTORY: $OUTPUT\n";
usage() unless scalar @ARGV == 1;
my $CORPUS = $ARGV[0];
open F, "<$CORPUS" or die "Can't read $CORPUS: $!"; close F;
extract_context();
contexts_to_documents();
topic_train();
label_spans_with_topics();
my $res;
if ($BIDIR) {
$res = grammar_extract_bidir();
} else {
$res = grammar_extract();
}
print STDERR "\n!!!COMPLETE!!!\n";
print STDERR "GRAMMAR: $res\n\nYou should probably run:\n\n $SCRIPT_DIR/filter-for-test-set.pl $CORPUS $res TESTSET.TXT > filtered-grammar.scfg\n\n";
exit 0;
sub usage {
print <<EOT;
Usage: $0 [OPTIONS] corpus.fr-en-al
Induces a grammar using Pitman-Yor topic modeling.
EOT
exit 1;
};
sub assert_exec {
my @files = @_;
for my $file (@files) {
die "Can't find $file - did you run make?\n" unless -e $file;
die "Can't execute $file" unless -e $file;
}
};
sub extract_context {
print STDERR "\n!!!CONTEXT EXTRACTION\n";
my $OUT_CONTEXTS = "$OUTPUT/context.txt.gz";
if (-e $OUT_CONTEXTS) {
print STDERR "$OUT_CONTEXTS exists, reusing...\n";
} else {
safesystem("$EXTRACTOR -i $CORPUS -c $ITEMS_IN_MEMORY -L $BASE_PHRASE_MAX_SIZE -C -S $CONTEXT_SIZE | $SORT_KEYS | $REDUCER | $GZIP > $OUT_CONTEXTS") or die "Failed to extract contexts.";
}
}
sub contexts_to_documents {
print STDERR "\n!!!CONTEXT TO DOCUMENTS\n";
my $IN_CONTEXTS = "$OUTPUT/context.txt.gz";
my $OUT_DOCS = "$OUTPUT/ctx.num.gz";
if (-e $OUT_DOCS) {
print STDERR "$OUT_DOCS exists, reusing...\n";
} else {
safesystem("$ZCAT $IN_CONTEXTS | $C2D $OUTPUT/contexts.index $OUTPUT/phrases.index | $GZIP > $OUT_DOCS") or die;
}
}
sub topic_train {
print STDERR "\n!!!TRAIN PYP TOPICS\n";
my $IN_DOCS = "$OUTPUT/ctx.num.gz";
my $OUT_CLUSTERS = "$OUTPUT/docs.txt.gz";
if (-e $OUT_CLUSTERS) {
print STDERR "$OUT_CLUSTERS exists, reusing...\n";
} else {
safesystem("$TOPIC_TRAIN -d $IN_DOCS -t $NUM_TOPICS -s $NUM_SAMPLES -o $OUT_CLUSTERS -w /dev/null") or die "Topic training failed.\n";
}
}
sub label_spans_with_topics {
my ($file) = (@_);
print STDERR "\n!!!LABEL SPANS\n";
my $IN_CLUSTERS = "$OUTPUT/docs.txt.gz";
my $OUT_SPANS = "$OUTPUT/labeled_spans.txt";
if (-e $OUT_SPANS) {
print STDERR "$OUT_SPANS exists, reusing...\n";
} else {
safesystem("$ZCAT $IN_CLUSTERS > $OUTPUT/clusters.txt") or die "Failed to unzip";
safesystem("$EXTRACTOR --base_phrase_spans -i $CORPUS -c $ITEMS_IN_MEMORY -L $BASE_PHRASE_MAX_SIZE -S $CONTEXT_SIZE | $S2L $OUTPUT/phrases.index $OUTPUT/contexts.index $OUTPUT/clusters.txt > $OUT_SPANS") or die "Failed to label spans";
unlink("$OUTPUT/clusters.txt") or warn "Failed to remove $OUTPUT/clusters.txt";
safesystem("paste -d ' ' $CORPUS $OUT_SPANS > $OUTPUT/corpus.src_trg_al") or die "Couldn't paste";
}
}
sub grammar_extract {
my $LABELED = "$OUTPUT/corpus.src_trg_al";
print STDERR "\n!!!EXTRACTING GRAMMAR\n";
my $OUTGRAMMAR = "$OUTPUT/grammar.gz";
if (-e $OUTGRAMMAR) {
print STDERR "$OUTGRAMMAR exists, reusing...\n";
} else {
safesystem("$EXTRACTOR -i $LABELED -c $ITEMS_IN_MEMORY -L $BASE_PHRASE_MAX_SIZE | $SORT_KEYS | $REDUCER -p | $GZIP > $OUTGRAMMAR") or die "Couldn't extract grammar";
}
return $OUTGRAMMAR;
}
sub grammar_extract_bidir {
#gzcat ex.output.gz | ./mr_stripe_rule_reduce -p -b | sort -t $'\t' -k 1 | ./mr_stripe_rule_reduce | gzip > phrase-table.gz
my $LABELED = "$OUTPUT/corpus.src_trg_al";
print STDERR "\n!!!EXTRACTING GRAMMAR\n";
my $OUTGRAMMAR = "$OUTPUT/grammar.bidir.gz";
if (-e $OUTGRAMMAR) {
print STDERR "$OUTGRAMMAR exists, reusing...\n";
} else {
safesystem("$EXTRACTOR -i $LABELED -c $ITEMS_IN_MEMORY -L $BASE_PHRASE_MAX_SIZE -b | $SORT_KEYS | $REDUCER -p -b | $SORT_KEYS | $REDUCER | $GZIP > $OUTGRAMMAR") or die "Couldn't extract grammar";
}
return $OUTGRAMMAR;
}
sub safesystem {
print STDERR "Executing: @_\n";
system(@_);
if ($? == -1) {
print STDERR "ERROR: Failed to execute: @_\n $!\n";
exit(1);
}
elsif ($? & 127) {
printf STDERR "ERROR: 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;
}
}
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