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+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
+
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diff --git a/bin/text_cat/Copyright b/bin/text_cat/Copyright
new file mode 100644
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--- /dev/null
+++ b/bin/text_cat/Copyright
@@ -0,0 +1,21 @@
+Copyright (c) 1994, 1995, 1996, 1997 by Gertjan van Noord.
+
+ This library is free software; you can redistribute it and/or
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+ License as published by the Free Software Foundation; either
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+
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diff --git a/bin/text_cat/LM/english.lm b/bin/text_cat/LM/english.lm
new file mode 100644
index 000000000..ab71632c6
--- /dev/null
+++ b/bin/text_cat/LM/english.lm
@@ -0,0 +1,400 @@
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+_on 110
+_for 109
+ect 109
+k 109
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+est 108
+der 107
+tu 107
+na 106
+_by_ 106
+by_ 106
+E 106
+by 106
+_by 106
+ve_ 106
+_di 106
+en_ 104
+vi 104
+m_ 103
+_whi 102
+iv 102
+whi 102
+ns_ 102
+_A 101
+ich 100
+ge 100
+pro 99
+ess 99
+_whic 99
+ers 99
+hich 99
+ce_ 99
+which 99
+whic 99
+all 98
+ove 98
+_is 98
+ich_ 97
+ee 97
+hich_ 97
+n,_ 96
+n, 96
+im 95
+ir_ 94
+hei 94
+ions 94
+sti 94
+se_ 94
+per 93
+The 93
+_pa 93
+heir 93
+id 93
+eir 93
+eir_ 93
+ig 93
+heir_ 93
+_no 93
+ev 93
+era 92
+_int 92
+ted 91
+_The 91
+ies 91
+art 91
+thei 90
+_ar 90
+_thei 90
+their 90
+_pro 90
+et 89
+_pe 88
+_mo 88
+ther 88
+x 87
+gh 87
+S 87
+_is_ 87
+ol 87
+ty_ 87
+_I 86
+nde 86
+am 86
+rn 86
+nte 86
+mp 85
+_su 84
+_we 84
+par 84
+_v 84
+pu 82
+his 82
+ow 82
+mi 82
+go 81
+N 81
+ue 81
+ple 81
+ep 80
+ab 80
+;_ 80
+; 80
+ex 80
+ain 80
+over 80
+_un 79
+q 79
+qu 79
+pp 79
+ith 79
+ry 79
+_as 79
+ber 79
+ub 78
+av 78
+uc 78
+s._ 77
+s. 77
+enc 77
+are 77
+iti 77
+gr 76
+his_ 76
+ua 76
+part 76
+ff 75
+eve 75
+O 75
+rea 74
+ous 74
+ia 74
+The_ 73
+ag 73
+mb 73
+_go 73
+fa 72
+on,_ 72
+ern 72
+t,_ 72
+on, 72
+t, 72
+_me 71
diff --git a/bin/text_cat/LM/german.lm b/bin/text_cat/LM/german.lm
new file mode 100644
index 000000000..6f14f51ef
--- /dev/null
+++ b/bin/text_cat/LM/german.lm
@@ -0,0 +1,400 @@
+_ 31586
+e 15008
+n 9058
+i 7299
+r 6830
+t 5662
+s 5348
+a 4618
+h 4176
+d 4011
+er 3415
+en 3412
+u 3341
+l 3266
+n_ 2848
+c 2636
+ch 2460
+g 2407
+o 2376
+e_ 2208
+r_ 2128
+m 2077
+_d 1948
+de 1831
+en_ 1786
+ei 1718
+er_ 1570
+in 1568
+te 1505
+ie 1505
+b 1458
+t_ 1425
+f 1306
+k 1176
+ge 1144
+s_ 1137
+un 1113
+, 1104
+,_ 1099
+w 1099
+z 1060
+nd 1039
+he 1004
+st 989
+_s 952
+_de 949
+. 909
+_e 906
+ne 906
+der 880
+._ 847
+be 841
+es 829
+ic 796
+_a 791
+ie_ 779
+is 769
+ich 763
+an 755
+re 749
+di 732
+ein 730
+se 730
+" 720
+ng 709
+_i 706
+sc 683
+sch 681
+it 673
+der_ 652
+h_ 651
+ch_ 642
+S 630
+le 609
+p 609
+ä 607
+ü 603
+au 603
+v 602
+che 599
+_w 596
+d_ 585
+die 576
+_di 572
+m_ 562
+_die 559
+el 548
+_S 540
+_der 529
+li 527
+_der_ 523
+si 515
+al 514
+ns 507
+on 501
+or 495
+ti 490
+ten 487
+ht 486
+die_ 485
+_die_ 483
+D 479
+rt 478
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+_u 470
+nt 468
+A 466
+in_ 464
+den 461
+cht 447
+und 443
+me 440
+_z 429
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+eine 376
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+K 365
+lt 360
+B 354
+_" 353
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+ni 347
+und_ 345
+E 345
+ur 345
+_m 342
+ri 341
+ha 340
+eh 339
+ten_ 338
+es_ 336
+_K 336
+_und 335
+ig 335
+_b 335
+hen 334
+_und_ 332
+_au 329
+_B 327
+_da 325
+_zu 324
+_in 322
+at 321
+us 318
+wi 307
+n, 305
+n,_ 304
+nn 304
+te_ 301
+eit 301
+_h 300
+ter 299
+M 298
+n. 295
+ß 294
+ng_ 289
+sche 289
+- 283
+rs 282
+den_ 282
+_si 280
+G 280
+im 278
+_ge 277
+chen 276
+rd 273
+_E 273
+n._ 270
+icht 270
+rn 268
+uf 267
+isch 264
+isc 264
+nen 263
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+_be 239
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+L 238
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+"_ 223
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+_V 188
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+Be 166
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+and 162
+J 161
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+rei 160
+_we 159
+_H 159
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+_R 153
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+_J 152
+I 152
+_das_ 152
+men 151
+_so 151
+_ver 151
+_auf 150
+ine_ 150
+_ha 150
+rg 149
+ind 148
+eben 148
+kt 147
+mit 147
+_an 147
+her 146
+Ge 146
+Sc 145
+_sich 145
+U 145
+Sch 145
+_sic 145
+end 145
+Di 144
+abe 143
+ck 143
+sse 142
+ür_ 142
+ell 142
+ik 141
+o_ 141
+nic 141
+nich 141
+sa 141
+_fü 140
+hn 140
+zi 140
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+nicht 140
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diff --git a/bin/text_cat/text_cat b/bin/text_cat/text_cat
new file mode 100755
index 000000000..74dae861d
--- /dev/null
+++ b/bin/text_cat/text_cat
@@ -0,0 +1,242 @@
+#!/usr/bin/perl -w
+# © Gertjan van Noord, 1997.
+# mailto:vannoord@let.rug.nl
+
+use strict;
+use vars qw($opt_d $opt_f $opt_h $opt_i $opt_l $opt_n $opt_s $opt_t $opt_v $opt_u $opt_a);
+use Getopt::Std;
+use Benchmark;
+
+my $non_word_characters='0-9\s';
+my @languages; # languages (sorted by name)
+my %ngram_for; # map language x ngram => rang
+
+# OPTIONS
+getopts('a:d:f:hi:lnst:u:v');
+
+# defaults: set $opt_X unless already defined (Perl Cookbook p. 6):
+$opt_a ||= 10;
+$opt_d ||= '/users1/vannoord/Perl/TextCat/LM';
+$opt_f ||= 0;
+$opt_t ||= 400;
+$opt_u ||= 1.05;
+
+$| = 1; # auto-flush stdout
+
+sub help {
+ print <<HELP
+Text Categorization. Typically used to determine the language of a
+given document.
+
+Usage
+-----
+
+* print help message:
+
+$0 -h
+
+* for guessing:
+
+$0 [-a Int] [-d Dir] [-f Int] [-i N] [-l] [-t Int] [-u Int] [-v]
+
+ -a the program returns the best-scoring language together
+ with all languages which are $opt_u times worse (cf option -u).
+ If the number of languages to be printed is larger than the value
+ of this option (default: $opt_a) then no language is returned, but
+ instead a message that the input is of an unknown language is
+ printed. Default: $opt_a.
+ -d indicates in which directory the language models are
+ located (files ending in .lm). Currently only a single
+ directory is supported. Default: $opt_d.
+ -f Before sorting is performed the Ngrams which occur this number
+ of times or less are removed. This can be used to speed up
+ the program for longer inputs. For short inputs you should use
+ -f 0.
+ Default: $opt_f.
+ -i N only read first N lines
+ -l indicates that input is given as an argument on the command line,
+ e.g. text_cat -l "this is english text"
+ Cannot be used in combination with -n.
+ -s Determine language of each line of input. Not very efficient yet,
+ because language models are re-loaded after each line.
+ -t indicates the topmost number of ngrams that should be used.
+ If used in combination with -n this determines the size of the
+ output. If used with categorization this determines
+ the number of ngrams that are compared with each of the language
+ models (but each of those models is used completely).
+ -u determines how much worse result must be in order not to be
+ mentioned as an alternative. Typical value: 1.05 or 1.1.
+ Default: $opt_u.
+ -v verbose. Continuation messages are written to standard error.
+
+* for creating new language model, based on text read from standard input:
+
+$0 -n [-v]
+
+ -v verbose. Continuation messages are written to standard error.
+
+
+HELP
+}
+
+if ($opt_h) { help(); exit 0; };
+
+if ($opt_n) {
+ my %ngram=();
+ my @result = create_lm(input(),\%ngram);
+ print join("\n",map { "$_\t $ngram{$_}" ; } @result),"\n";
+} elsif ($opt_l) {
+ classify($ARGV[0]);
+} elsif ($opt_s) {
+ while (<>) {
+ chomp;
+ classify($_);
+ }
+} else {
+ classify(input());
+}
+
+sub read_model {
+ my ($file) = @_;
+ open(LM,"$file") or die "cannot open $file: $!\n";
+ my %ngram;
+ my $rang = 1;
+ while (<LM>) {
+ chomp;
+ # only use lines starting with appropriate character. Others are
+ # ignored.
+ if (/^[^$non_word_characters]+/o) {
+ $ngram{$&} = $rang++;
+ }
+ }
+ return \%ngram;
+}
+
+sub read_models {
+ # open directory to find which languages are supported
+ opendir DIR, "$opt_d" or die "directory $opt_d: $!\n";
+ @languages = sort(grep { s/\.lm// && -r "$opt_d/$_.lm" } readdir(DIR));
+ closedir DIR;
+ @languages or die "sorry, can't read any language models from $opt_d\n" .
+ "language models must reside in files with .lm ending\n";
+
+ foreach my $language (@languages) {
+ $ngram_for{$language} = read_model("$opt_d/$language.lm");
+ }
+}
+
+# CLASSIFICATION
+sub classify {
+ my ($input)=@_;
+ my %results=();
+ my $maxp = $opt_t;
+ read_models() if !@languages;
+
+ # create ngrams for input. Note that hash %unknown is not used;
+ # it contains the actual counts which are only used under -n: creating
+ # new language model (and even then they are not really required).
+ my @unknown=create_lm($input);
+
+ my $t1 = new Benchmark;
+ foreach my $language (@languages) {
+ # compares the language model with input ngrams list
+ my $ngram = $ngram_for{$language} or die "no ngrams for $language";
+
+ my ($i,$p)=(0,0);
+ while ($i < @unknown) {
+ if ($ngram->{$unknown[$i]}) {
+ $p=$p+abs($ngram->{$unknown[$i]}-$i);
+ } else {
+ $p=$p+$maxp;
+ }
+ ++$i;
+ }
+ #print STDERR "$language: $p\n" if $opt_v;
+
+ $results{$language} = $p;
+ }
+ print STDERR "read language models done (" .
+ timestr(timediff(new Benchmark, $t1)) .
+ ".\n" if $opt_v;
+ my @results = sort { $results{$a} <=> $results{$b} } keys %results;
+
+ print join("\n",map { "$_\t $results{$_}"; } @results),"\n" if $opt_v;
+ my $a = $results{$results[0]};
+
+ my @answers=(shift(@results));
+ while (@results && $results{$results[0]} < ($opt_u *$a)) {
+ @answers=(@answers,shift(@results));
+ }
+ if (@answers > $opt_a) {
+ print "I don't know; " .
+ "Perhaps this is a language I haven't seen before?\n";
+ } else {
+ print join(" or ", @answers), "\n";
+ }
+}
+
+# first and only argument is reference to hash.
+# this hash is filled, and a sorted list (opt_n elements)
+# is returned.
+sub input {
+ my $read="";
+ if ($opt_i) {
+ while(<>) {
+ if ($. == $opt_i) {
+ return $read . $_;
+ }
+ $read = $read . $_;
+ }
+ return $read;
+ } else {
+ local $/; # so it doesn't affect $/ elsewhere
+ undef $/;
+ $read = <>; # swallow input.
+ $read || die "determining the language of an empty file is hard...\n";
+ return $read;
+ }
+}
+
+
+sub create_lm {
+ my $t1 = new Benchmark;
+ my $ngram;
+ ($_,$ngram) = @_; #$ngram contains reference to the hash we build
+ # then add the ngrams found in each word in the hash
+ my $word;
+ foreach $word (split("[$non_word_characters]+")) {
+ $word = "_" . $word . "_";
+ my $len = length($word);
+ my $flen=$len;
+ my $i;
+ for ($i=0;$i<$flen;$i++) {
+ $$ngram{substr($word,$i,5)}++ if $len > 4;
+ $$ngram{substr($word,$i,4)}++ if $len > 3;
+ $$ngram{substr($word,$i,3)}++ if $len > 2;
+ $$ngram{substr($word,$i,2)}++ if $len > 1;
+ $$ngram{substr($word,$i,1)}++;
+ $len--;
+ }
+ }
+ ###print "@{[%$ngram]}";
+ my $t2 = new Benchmark;
+ print STDERR "count_ngrams done (".
+ timestr(timediff($t2, $t1)) .").\n" if $opt_v;
+
+ # as suggested by Karel P. de Vos, k.vos@elsevier.nl, we speed up
+ # sorting by removing singletons
+ map { my $key=$_; if ($$ngram{$key} <= $opt_f)
+ { delete $$ngram{$key}; }; } keys %$ngram;
+ #however I have very bad results for short inputs, this way
+
+
+ # sort the ngrams, and spit out the $opt_t frequent ones.
+ # adding `or $a cmp $b' in the sort block makes sorting five
+ # times slower..., although it would be somewhat nicer (unique result)
+ my @sorted = sort { $$ngram{$b} <=> $$ngram{$a} } keys %$ngram;
+ splice(@sorted,$opt_t) if (@sorted > $opt_t);
+ print STDERR "sorting done (" .
+ timestr(timediff(new Benchmark, $t2)) .
+ ").\n" if $opt_v;
+ return @sorted;
+}
diff --git a/bin/text_cat/version b/bin/text_cat/version
new file mode 100644
index 000000000..e6ba9d571
--- /dev/null
+++ b/bin/text_cat/version
@@ -0,0 +1,2 @@
+1.10
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 01:51:20 +0000