/[stem-hr]/StemHR.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /StemHR.pm

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Revision 7 - (hide annotations)
Sat Feb 26 18:13:14 2005 UTC (19 years, 1 month ago) by dpavlin
Original Path: stem-hr.pl
File MIME type: text/plain
File size: 2669 byte(s)
malo glagola...

1 dpavlin 1 #!/usr/bin/perl -w
2     #
3     # Croatian stemmer
4     #
5    
6     # promjenjive:
7     # - imenice
8     # - pridjevi
9     # - brojevi
10     # - zamjenice
11     # - prilozi
12     # - glagoli
13     #
14     # nepromjenjive:
15     # - prijedlozi
16     # - veznici
17     # - èestice
18     # - uzvici
19     #
20    
21 dpavlin 4 use strict;
22    
23 dpavlin 1 sub kgh {
24     my ($pre,$replace,$post) = @_;
25     $replace =~ s/[cè]/k/g;
26     $replace =~ s/[z¾]/g/g;
27     $replace =~ s/[s¹]/h/g;
28 dpavlin 2 return $pre . $replace . $post;
29 dpavlin 1 }
30    
31     # samoglasnici
32     my $sa = '[aeiou]';
33     # suglasnici
34     my $su = '[^aeiou]';
35    
36 dpavlin 5 my $palatal = '(lj|nj|j|æ|¾|¹|¾|¹t|¾d)';
37    
38 dpavlin 7 # glagolni razredi
39     my $g_1r = '[td]';
40     my $g_2r = '[sz]';
41     my $g_3r = '[pb]';
42     my $g_4r = '[kgh]';
43     my $g_5r = '[nm]';
44     my $g_6r = '(:?nu|n)';
45    
46 dpavlin 3 my %rules;
47     my %stem_words;
48     my $words = 0;
49     my $stems = 0;
50    
51 dpavlin 5
52     my $last_stem = '';
53     sub check_stem {
54     my $s = shift || return;
55     if ($last_stem) {
56     print "ERROR==> " if ($last_stem ne $s);
57     } else {
58     $last_stem = $s;
59     }
60     }
61    
62 dpavlin 1 while(<>) {
63     chomp;
64 dpavlin 5 next if (/^#/);
65 dpavlin 3 if (/^$/) {
66     print "\n";
67 dpavlin 5 $last_stem = '';
68 dpavlin 3 next;
69     }
70 dpavlin 1
71 dpavlin 3 $words++;
72    
73 dpavlin 1 my $orig = $_;
74    
75    
76     unless (
77 dpavlin 7 # infinitiv
78     s/(${sa})(ti|æi)$/$1.$2 100/g ||
79     # 1. razred
80     s/([^s])[td](em|e¹|emo|ete|oh|osmo|oste|o¹e|ijah|ija¹e|ijasno|ijaste|ijahu|imo|ite|en|ena|eni)$/$1.sti 101/g ||
81     # 2. razred
82     s/(${sa}[sz])(em|e¹|e¹emo|ete|u|oh|e|osmo|oste|o¹e|ijah|ija¹e|ijasmo|ijaste|ijahu|imo|ite|uæi|av¹i|ao|la|lo|li|le|la|en|ena|eni)$/$1.sti 102/ ||
83     # 3. razdred
84     s/(p|b|sp|su)(em|e¹|e|emo|ete|u|oh|osmo|oste|o¹e|ah|a¹e|asmo|aste|ahu|ijah|ija¹e|i|imo|ite||uæi|av¹i|ao|la|lo|en|ena|eni)$/$1.sti 103/ ||
85    
86     # imenice
87    
88 dpavlin 5 # vrsta a
89     s/(${su}st)a$/$1 13/g ||
90     s/(${su})c[ae]$/$1ce 17/g ||
91 dpavlin 2 # kgh
92     s/(${sa})([è¾¹czs])(i|e|ima)$/kgh($1,$2,' 1')/gex ||
93     s/(${sa}[kgh])(a|u|om)$/$1 2/g ||
94     s/(${su})([è¾¹czs])(i|e|ima)$/kgh($1,"a$2",' 3')/gex ||
95 dpavlin 5 # imenice na palatal
96     s/${palatal}${palatal}(a|u|em|i|ima|e)$/$1a$2 9/g ||
97     s/${palatal}(a|u|em)$/$1 8/g ||
98 dpavlin 1 # nepostojano a
99 dpavlin 2 s/(${su}a{$su})a/$1 4/g ||
100     s/(${su})(${su})(a|u|i|e|om|ima)$/$1a$2 5/g
101 dpavlin 1 ) {
102    
103 dpavlin 5 # vrsta a
104     s/me$/me 11/g ||
105     s/(eta|ena)$/e 12/g ||
106 dpavlin 6 s/(${sa}${su})(o|e|a|u|om|em|i|ima|ina)$/$1 7/g ||
107 dpavlin 5
108     s/(${su})sa$/$1as 14/g ||
109     s/(${su})ena$/$1e 16/g ||
110 dpavlin 6 s/(${su})eta$/$1e 17/g ||
111 dpavlin 5 s/(${su})([oe])$/$1-$2 18/g ||
112    
113 dpavlin 1 # mno¾ina
114 dpavlin 5 s/(${su})(ov|ev)*(i|a|ima|e|in|ina|eta)$/$1 6/g;
115 dpavlin 1 }
116    
117 dpavlin 3 if (s/^(.+)\s(\d+)$/$1\t$2/g) {
118     $rules{$2}++;
119     $stems++;
120     $stem_words{$1}++;
121 dpavlin 5 check_stem($1);
122     } else {
123     $last_stem = $_;
124 dpavlin 3 }
125 dpavlin 1
126     printf("%-15s %s\n",$orig,$_);
127 dpavlin 3
128 dpavlin 1 }
129 dpavlin 3 my $nr_stems = keys(%stem_words);
130     printf "\n# %d words, %d stems in %d ops, %.2f%% size\n",$words,$nr_stems,$stems,($nr_stems*100/$words);
131    
132 dpavlin 4 foreach my $s (keys %stem_words) {
133     print "#stem $stem_words{$s} $s\n";
134     }
135    
136 dpavlin 5 foreach my $r (sort keys %rules) {
137 dpavlin 4 print "#rule $rules{$r} $r\n";
138     }

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