/[stem-hr]/StemHR.pm
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Annotation of /StemHR.pm

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Revision 13 - (hide annotations)
Sat Jul 9 10:43:16 2005 UTC (18 years, 8 months ago) by dpavlin
Original Path: stem-hr.pm
File size: 2447 byte(s)
added memoize

1 dpavlin 12 package StemHr;
2    
3 dpavlin 1 #
4     # Croatian stemmer
5     #
6    
7     # promjenjive:
8     # - imenice
9     # - pridjevi
10     # - brojevi
11     # - zamjenice
12     # - prilozi
13     # - glagoli
14     #
15     # nepromjenjive:
16     # - prijedlozi
17     # - veznici
18     # - èestice
19     # - uzvici
20     #
21    
22 dpavlin 4 use strict;
23 dpavlin 12 use locale;
24 dpavlin 4
25 dpavlin 13 use Memoize;
26     memoize('stem');
27    
28 dpavlin 1 sub kgh {
29     my ($pre,$replace,$post) = @_;
30     $replace =~ s/[cè]/k/g;
31     $replace =~ s/[z¾]/g/g;
32     $replace =~ s/[s¹]/h/g;
33 dpavlin 2 return $pre . $replace . $post;
34 dpavlin 1 }
35    
36     # samoglasnici
37     my $sa = '[aeiou]';
38     # suglasnici
39     my $su = '[^aeiou]';
40    
41 dpavlin 5 my $palatal = '(lj|nj|j|æ|¾|¹|¾|¹t|¾d)';
42    
43 dpavlin 7 # glagolni razredi
44     my $g_1r = '[td]';
45     my $g_2r = '[sz]';
46     my $g_3r = '[pb]';
47     my $g_4r = '[kgh]';
48     my $g_5r = '[nm]';
49     my $g_6r = '(:?nu|n)';
50    
51 dpavlin 12 sub stem {
52 dpavlin 3
53 dpavlin 13 my $w = shift || return;
54    
55 dpavlin 1 unless (
56 dpavlin 7 # infinitiv
57 dpavlin 13 $w =~ s/(\w)(ti|æi)$/$1.$2 100/g ||
58 dpavlin 7 # 1. razred
59 dpavlin 13 $w =~ s/([^sk])[td](em|e¹|e|emo|ete|oh|osmo|oste|o¹e|ijah|ija¹e|ijasno|ijaste|ijahu|imo|ite|en|ena|eni)$/$1s.ti 101/g ||
60 dpavlin 7 # 2. razred
61 dpavlin 13 $w =~ s/(${sa})[sz](em|e¹|e|e¹emo|emo|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)$/$1s.ti 102/ ||
62 dpavlin 11 # 3. razred
63 dpavlin 13 $w =~ s/(p|b|sp|su)(em|e¹|e|emo|ete|u|oh|osmo|oste|o¹e|ah|a¹e|asmo|aste|ahu|ijah|ija¹e|ijahu|i|imo|ite||uæi|av¹i|ao|la|lo|en|ena|eni)$/$1s.ti 103/ ||
64 dpavlin 11 # 4. razred
65 dpavlin 13 $w =~ s/[è¾¹](em|e¹|e|emo|ete|u|ah|ahu|en|ena)$/.æi 104/g ||
66     $w =~ s/[k](oh|osmo|oste|o¹e|uæi|av¹i|ao|la|lo)$/.æi 105/g ||
67     $w =~ s/[c](ijah|ija¹e|ijasmo|ijaste|ijahu|i|imo|ite)$/.æi 106/g ||
68     $w =~ s/[g](nuti|oh|nuh|nu|av¹i|nuv¹i|ao|nuo|nem|ne¹|ni|imo|nut|nimo)$/.æi 107/g ||
69 dpavlin 7
70     # imenice
71    
72 dpavlin 5 # vrsta a
73 dpavlin 13 $w =~ s/(${su}st)a$/$1 13/g ||
74     $w =~ s/(${su})c[ae]$/$1ce 17/g ||
75 dpavlin 2 # kgh
76 dpavlin 13 $w =~ s/(\w${sa})([è¾¹czs])(i|e|ima)$/kgh($1,$2,' 1')/gex ||
77     $w =~ s/(${sa}[kgh])(a|u|om)$/$1 2/g ||
78     $w =~ s/(${su})([è¾¹czs])(i|e|ima)$/kgh($1,"a$2",' 3')/gex ||
79 dpavlin 5 # imenice na palatal
80 dpavlin 13 $w =~ s/${palatal}${palatal}(a|u|em|i|ima|e)$/$1a$2 9/g ||
81     $w =~ s/${palatal}(a|u|em)$/$1 8/g ||
82 dpavlin 1 # nepostojano a
83 dpavlin 13 $w =~ s/(${su}a{$su})a/$1 4/g ||
84     $w =~ s/(${su})(${su})(a|u|i|e|om|ima)$/$1a$2 5/g
85 dpavlin 1 ) {
86    
87 dpavlin 5 # vrsta a
88 dpavlin 13 $w =~ s/me$/me 11/g ||
89     $w =~ s/(eta|ena)$/e 12/g ||
90 dpavlin 5
91 dpavlin 13 $w =~ s/(\w${sa}${su})(o|e|a|u|om|em|i|ima|ina|eta)$/$1 7/g ||
92 dpavlin 9
93 dpavlin 13 $w =~ s/(${su})sa$/$1as 14/g ||
94     $w =~ s/(${su})ena$/$1e 16/g ||
95     $w =~ s/(${su})eta$/$1e 17/g ||
96     $w =~ s/(${su})([oe])$/$1$2 18/g ||
97 dpavlin 5
98 dpavlin 9 0;
99    
100 dpavlin 1 }
101    
102 dpavlin 13 # makni broj pravila
103     $w =~ s/\s\d+$//;
104     # makni toèku koja oznaèava korjen rijeèi
105     $w =~ s/\.//g;
106    
107     return $w;
108 dpavlin 1 }
109 dpavlin 3

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