def keywordize(str):
"""
Splits a string into words, removes common stopwords, stems and removes
duplicates.
"""
return set([jellyfish.porter_stem(word.lower().encode('ascii',
'ignore'))
for word in tokenize(str)
if (word.isalpha() or word.isdigit()) and
word.lower() not in stop_words])
def keywordize(str):
"""
Splits a string into words, removes common stopwords, stems and removes
duplicates.
"""
return set([jellyfish.porter_stem(word.lower().encode('ascii',
'ignore'))
for word in tokenize(str)
if (word.isalpha() or word.isdigit()) and
word.lower() not in stop_words])
def porter_stemmer(d):
start = 0
end = 0
nu_d = ''
for char in d:
if char == ' ':
#print('Stemming ', s[start:end])
nu_d = nu_d + jellyfish.porter_stem(d[start:end]) + ' '
start = end
end += 1
d = nu_d
return d
def main():
# declare test strings
# rem: u prefix is required jellyfish convention
str1 = u'Jellyfish'
str2= u'Smellyfish'
# test Phonetic Encoding
print('\nPhonetic Encoding ----------------------------')
# Metaphone
r1 = jellyfish.metaphone(str1)
r2 = jellyfish.metaphone(str2)
print('Metaphone: ', r1, ", ", r2)
# American Soundex
r1 = jellyfish.soundex(str1)
r2 = jellyfish.soundex(str2)
print('Soundex: ', r1, ", ", r2)
# NYSIIS
r1 = jellyfish.nysiis(str1)
r2 = jellyfish.nysiis(str2)
print('NYSIIS: ', r1, ", ", r2)
# Match Rating Codex
r1 = jellyfish.match_rating_codex(str1)
r2 = jellyfish.match_rating_codex(str2)
print('Match Rating Codex: ', r1, ", ", r2)
# test Stemming
print('\nStemming -------------------------------------')
pStr1 = u'Jellyfished'
pStr2 = u'Smellyfishing'
r1 = jellyfish.porter_stem(str1)
r2 = jellyfish.porter_stem(str2)
print('Porter Stemmer: ', r1, ", ", r2)
# test String Comparison
print('\nString Comparisons ---------------------------')
# Levenshtein Distance
r = jellyfish.levenshtein_distance(str1, str2)
print('Levenshtein Distance: ', r)
# Damerau-Levenshtein Distance
r = jellyfish.damerau_levenshtein_distance(str1, str2)
print('Damerau-Levenshtein Distance: ', r)
# Hamming Distance
result = jellyfish.hamming_distance(str1, str2)
print('Hamming Distance: ', r)
# Jaro Distance
result = jellyfish.jaro_distance(str1, str2)
print('Jaro Distance: ', r)
# Jaro-Winkler Distance
result = jellyfish.jaro_winkler(str1, str2)
print('Jaro-Winkler Distance: ', r)
# Match Rating Approach (comparison)
r = jellyfish.match_rating_comparison(str1, str2)
print('Match Rating Comparison: ', r)
# end program
print('Done.')
def test_porter_stem(self):
with open('porter-test.csv') as f:
reader = csv.reader(f)
for (a, b) in reader:
self.assertEqual(jellyfish.porter_stem(a.lower()), b.lower())
def porter_stem(s):
return None if s == None else J.porter_stem(s)
import jellyfish
s = 'My doctors are both single students who like sandwiches.'
print('Before: ', s)
start = 0
end = 0
nu_s = ''
for char in s:
if char = ' ':
print('Stemming ', s[start:end])
nu_s = nu_s + jellyfish.porter_stem(s[start:end]) + ' '
start = end
end += 1
print('After: ', nu_s)
print('Done.')
