def porter_list1(lista):
stemmer = PorterStemmer()
newlist = []
for b in lista:
b = stemmer.stem(b)
newlist.append(b)
return newlist
def splitAndStem(inputfilename, outputfilename):
'''
For each ingredient split it into words, stem each word, construct a new recipe from those words
:param inputfilename:
:return:
'''
with open(outputfilename, 'w') as ff:
ff.write('[\n')
with open(inputfilename) as f:
d = eval(f.read())
stemmer = PorterStemmer()
with open(outputfilename, 'a') as ff:
for i in d:
# print(i)
new_item = {}
new_ingredients = []
for ingredient in i['ingredients']:
tokens = word_tokenize(ingredient)
clean_tokens = [re.subn('[^A-Za-z]', '', token)[0] for token in tokens]
new_ingredients += [stemmer.stem(w).lower() for w in clean_tokens]
new_item['cuisine'] = i['cuisine']
new_item['id'] = i['id']
new_item['ingredients'] = new_ingredients
json_recipe = json.dumps(new_item)
ff.write('%s,\n' % str(json_recipe))
def parseReviews(mypath):
filelist = os.listdir(mypath)
wordDict = {}
negationList = ["no","not","never","can't","won't","cannot","didn't","couldn't"]
negationFlag = False
stopwordList = set(stopwords.words("english"))
stemmer = PorterStemmer()
for file in filelist:
with open(mypath + "/" + file,"r") as f:
word_list = word_tokenize(f.read())
for word in word_list:
if word in negationList:
#double negative
if negationFlag:
negationFlag = False
else:
negationFlag = True
continue
if not word.isalnum():
negationFlag = False
if word.isalnum() and word not in stopwordList:
word = stemmer.stem(word)
if negationFlag:
word = "!" + word
negationFlag = False
if word not in wordDict:
wordDict[word] = 1
else:
wordDict[word] += 1
return wordDict
def tokenizeTags(str,dict_items):
#temp map (for getting the local term frequency)
#for a sentence
str =str.decode('ascii', 'ignore')
#tokenizer = nltk.tokenize.treebank.TreebankWordTokenizer()
#tokens=tokenizer.tokenize(str)
tokens = str.split()
#print tokens
stemmer = PorterStemmer()
#small set of stopwords (remove you, are, and, I those kinds of words)
last =[]
#bigram_list=[]
for d in tokens:
d = d.split('-')
for c in d:
c=re.compile('[%s]' % re.escape(string.punctuation)).sub('', c)
#regular expression -> strip punctuations
if c!='' and c not in dict_items:
try:
if int(c):
if len(c)!=4 and (c>2015 or c<1900): #keep years
c=stemmer.stem('NUM')
except Exception:
c = stemmer.stem(c.lower())
pass
#c = stemmer.stem(c.lower())
last.append(c)
#bigram generation
#index= len(last)
#if index>1:
# bigram = last[index-2]+' '+last[index-1]
# bigram_list.append(bigram)
return last
def tokenize2_bigram(str,df_freq):
temp_map={}
#for a sentence
str =str.decode('ascii', 'ignore')
tokens = str.split()
#print tokens
stemmer = PorterStemmer()
last =[]
bigram_list=[]
for d in tokens:
d = d.split('-')
for c in d:
c=re.compile('[%s]' % re.escape(string.punctuation)).sub('', c)
#regular expression -> strip punctuations
if c!='':
try:
if int(c):
if len(c)!=4 and (c>2015 or c<1900): #keep years
c=stemmer.stem('NUM')
except Exception:
c = stemmer.stem(c.lower())
pass
#c = stemmer.stem(c.lower())
last.append(c)
#bigram generation
index= 0
if index>1:
bigram = last[index-2]+' '+last[index-1]
bigram_list.append(bigram)
updateDF(temp_map,df_freq,bigram)
index+=1
return bigram_list
def _stemmatize(self, word):
lmtzr = WordNetLemmatizer() # lemmatizer won't stem words ending in '-ing' unless you tell it it's a verb
stemmer = PorterStemmer()
if word.endswith('ing'):
return stemmer.stem(word)
return lmtzr.lemmatize(word)
def prepare_data(reviews):
# run porter stemmer on every word
stemmer = PorterStemmer()
stem_text = lambda x: {'class': x['class'],
'text': stemmer.stem(x['text'])}
# clean text and remove empty items
reviews = filter(lambda x: x != {}, reviews)
reviews = map(stem_text, reviews)
print('classification: ' + reviews[observed_element]['class'] + '\n\n------------------------------------\n\n')
print('stemming: ' + reviews[observed_element]['text'] + '\n\n------------------------------------\n\n')
# remove stopwords
reviews = map(remove_stop_words, reviews)
print('stopwords: ' + reviews[observed_element]['text'] + '\n\n------------------------------------\n\n')
# remove undesired patterns
reviews = map(clean_text, reviews)
print('elementos inuteis: ' + reviews[observed_element]['text'] + '\n\n------------------------------------\n\n')
return reviews
def deleting_stop_words_and_punctuating(text):
stop_words = set(stopwords.words('english'))
ps = PorterStemmer()
lemmatizer = WordNetLemmatizer()
word_tokenize_text = word_tokenize(text)
words = [ps.stem(lemmatizer.lemmatize(w)) for w in word_tokenize_text]
return [w.lower() for w in words if not (w in stop_words or w in string.punctuation or w in "''" or w in '``' or w in "the" or w in 'in' or w in "'s")]
def preprocess(text):
stemmer = PorterStemmer()
stop = stopwords.words('english')
tokens = [tok for tok in word_tokenize(text.lower())
if tok not in stop]
tokens_stemmed = [stemmer.stem(tok) for tok in tokens]
return tokens_stemmed
class StemmedBagOfWordsFeatureGenerator(EdgeFeatureGenerator):
"""
Generates stemmed Bag of Words representation for each sentence that contains
an edge, using the function given in the argument.
By default it uses Porter stemmer
:type feature_set: nala.structures.data.FeatureDictionary
:type stemmer: nltk.stem.PorterStemmer
:type stop_words: list[str]
:type training_mode: bool
"""
def __init__(self, feature_set, stop_words=[], training_mode=True):
self.feature_set = feature_set
"""the feature set for the dataset"""
self.training_mode = training_mode
"""whether the mode is training or testing"""
self.stemmer = PorterStemmer()
"""an instance of the PorterStemmer"""
self.stop_words = stop_words
"""a list of stop words"""
def generate(self, dataset):
for edge in dataset.edges():
sentence = edge.part.sentences[edge.sentence_id]
if self.training_mode:
for token in sentence:
if self.stemmer.stem(
token.word
) not in self.stop_words and not token.features['is_punct']:
feature_name = '4_bow_stem_' + self.stemmer.stem(
token.word) + '_[0]'
self.add_to_feature_set(edge, feature_name)
def preprocessing(text, debug = False):
if debug:
print text
# lower case
text = text.lower()
if debug:
print text
# can't -> cannot, bya's -> bya is
text = replacers.RegexpReplacer().replace(text)
if debug:
print text
# word tokenize
words = word_tokenize(text)
if debug:
print words
# removing stopwords
english_stops = set(stopwords.words('english'))
english_stops_added = english_stops | {'.', ',', ':', ';'}
words = [word for word in words if word not in english_stops_added]
if debug:
print words
# stemming words
stemmer = PorterStemmer()
words_stemmed = list(map(lambda word: stemmer.stem(word), words))
if debug:
print words_stemmed
return words, words_stemmed
def stem(string):
"""Stem a phrase"""
global stemmer
if not stemmer:
stemmer = Stemmer()
#words = string.split()
#for i in range(len(words)):
# words[i] = self.stemmer.stem(words[i])
# stemming last word only
#string = self._reGlue(words)
#
#string2 = stemmer.stem(string)
#if string2 not in stemdict:
# stemdict[string2] = string
# FIX ME
if string not in stemdict:
if bad_unicode(string):
## added A. Meyers 8/28/15
temp = stemmer.stem(remove_non_unicode(string))
else:
temp = stemmer.stem(string)
if temp:
stemdict[string] = temp
if not temp:
pass
elif temp not in unstemdict:
unstemdict[temp] = [string]
elif string not in unstemdict[temp]:
unstemdict[temp].append(string)
else:
temp = stemdict[string]
return temp
def extract_clean_sentences(self):
"""
Extracts sentences from plain text. Also applies the following cleaning
operations:
- Exclude all characters not recognized by 'utf-8' encoding
- Exclude all characters not contained in [a-zA-Z0-9 '-]
- Exclude common stopwords
"""
text = self.raw_text
exclude = re.compile('[^a-zA-Z0-9 \'-]')
linebreaks = re.compile('\s')
excess_space = re.compile('\s+')
stemmer = PorterStemmer()
sentences = sent_tokenize(text)
out = []
for sentence in sentences:
sentence = linebreaks.sub(' ', sentence)
sentence = exclude.sub(' ', sentence)
sentence = excess_space.sub(' ', sentence)
tokens = word_tokenize(sentence)
tokens = [stemmer.stem(t.lower()) for t in tokens]
out.append(tokens)
return out
def stemming():
ps = PorterStemmer()
input_tweet = 'testing tests trying tries'
words = word_tokenize(input_tweet)
for w in words:
print(ps.stem(words))
def openfile(filename,output):
print(filename)
#starts run time
start = timeit.default_timer()
ps = PorterStemmer()
file = open(filename,"r")
tokens = []
#Used for removing punctuation from the documents
translate_table = dict((ord(char), None) for char in string.punctuation)
start2 = timeit.default_timer()
#splits the lines into words and removes the punctuation
for line in file:
tokens += word_tokenize(line.translate(translate_table) )
start3 = timeit.default_timer()
print("tokenize")
print(start3 - start2)
#creates a set of stop words to be removed later
stop_words = set(stopwords.words("english"))
start6 = timeit.default_timer()
#if a word is not a stop word it adds it to a list
filtered_sentence = []
for w in tokens:
if w not in stop_words:
filtered_sentence.append(w)
start7 = timeit.default_timer()
print("stop word removal")
print(start7 - start6)
startw = timeit.default_timer()
#stems each word and adds it to the output file in csv form
f = open(output,'w')
iterFilSen = iter(filtered_sentence)
if output == "documents.csv":
for w in filtered_sentence:
if w == "I":
f.write("\n")
f.write(ps.stem(w))
f.write(",")
else:
for w in iterFilSen:
if w == "I":
f.write("\n")
#removes the I number W
next(iterFilSen)
next(iterFilSen)
else:
f.write(ps.stem(w))
f.write(",")
#ends run time
stop = timeit.default_timer()
print("writing")
print(stop - startw)
print("total: "+output)
print(stop - start)
def buildVocab(self):
'''Build a vocabulary for the selected documents (from dir database).'''
## Note: The source of text should be Lucene processed field values. Lucene tokenized the text, remove stop words, and may take other unknown steps.
## Right now the vocabulary is built on the raw text with NLTK based stopwords removal, and tokenization. This should be improved.
# collect contents from /database/ for each of these doc
for pmid in self.pmidList: # self.pmidList includes the query and the 99 most similar articles selected by BM25
self.corpus.append(file(os.path.join(self.dbDir,pmid)).read()) # corpus contains raw text (MH, title*2, abstract)
for text in self.corpus:
sent_tokenize_list = sent_tokenize(text.strip().lower(), "english") # tokenize an article text
stemmed_text = []
if sent_tokenize_list: # if sent_tokenize_list is not empty
porter_stemmer = PorterStemmer()
for sent in sent_tokenize_list:
words = TreebankWordTokenizer().tokenize(sent) # tokenize the sentence
words = [word.strip(string.punctuation) for word in words]
words = [word for word in words if not word in stopwords.words("english")]
words = [word for word in words if len(word)>1] # remove single letters and non alphabetic characters
words = [word for word in words if re.search('[a-zA-Z]',word)]
words = [porter_stemmer.stem(word) for word in words] # apply Porter stemmer
stemmed_text.append(" ".join(words))
self.vocab+=words
self.stemmed_corpus.append(". ".join(stemmed_text)) # append a stemmed article text
# save stemmed corpus
pickle.dump(self.stemmed_corpus, file(os.path.join(self.stemmed_corpusDir,str(self.pmidList[0])),"w"))
# remove low frequency tokens and redundant tokens
tokenDist = Counter(self.vocab)
lowFreqList = []
for token, count in tokenDist.iteritems():
if count<2:
lowFreqList.append(token)
self.vocab = list(set(self.vocab)-set(lowFreqList))
# save vocabulary
pickle.dump(self.vocab,file(os.path.join(self.vocabDir,str(self.pmidList[0])),"w"))
def parseTranscript(transcript):
assert isinstance(transcript, Transcript), \
"transcript must be stored in custom namedtuple, not {}".format(type(transcript))
text = transcript.prepared.append(transcript.QandA)
id = "{ticker}-{year}-{month}-{day}".format(ticker=transcript.ticker.split(':')[-1],
year=transcript.date.year,
month=transcript.date.month,
day=transcript.date.day)
tokenizer = wordpunct_tokenize
stemmer = PorterStemmer()
index = dict()
pos = 0
for row in text:
for i, token in enumerate(tokenizer(row.lower())):
token = stemmer.stem(token)
if token not in index and '|' not in token:
index[token] = [id, [str(pos + i)]]
elif '|' not in token:
index[token][-1].append(str(pos + i))
try:
pos += (i + 1)
except:
pass
return index
def get_english_vocab(lemmatize=False):
vocab = (w.lower() for w in words.words())
if lemmatize:
stemmer = PorterStemmer()
vocab = (stemmer.stem(w) for w in vocab)
return set(vocab)
def testing():
# - tokenize on sentence and word
ex_txt = "hello there Mr. Bartuska, How are you? The weather is great and I enjoy Python. cheers!"
print(sent_tokenize(ex_txt))
print(word_tokenize(ex_txt, language='english'))
# - stop words (pre-defined by nltk)
stop_words = set(stopwords.words('english'))
print(stop_words)
words = word_tokenize(ex_txt)
print(words)
filtered_sent = []
for w in words:
if w not in stop_words:
filtered_sent.append(w)
print(filtered_sent)
filtered_sent = [w for w in words if not w in stop_words]
print(filtered_sent)
# - stemming
ps = PorterStemmer()
example_words = [python,pythoner,pythoning,pythoned,pythonly]
# for w in example_words:
# print(ps.stem(w))
new_text = "it is very important to be pothonly while you are pythoning with python. All pythoners have pythoned poorly at least once."
words = word_tokenize(new_text)
for w in words:
print(ps.stem(w))
def stemText(text):
ps = PorterStemmer()
words = word_tokenize(text)
#all_words = [];
for w in words:
all_words.append(ps.stem(w))
def preprocess_document(doc):
stopset = set(stopwords.words('english'))
stemmer = PorterStemmer()
tokens = wordpunct_tokenize(doc)
clean = [token.lower() for token in tokens if token.lower() not in stopset and len(token) > 2]
final = [stemmer.stem(word) for word in clean]
return final
def tokenize2(str,df_freq):
#temp map (for getting the local term frequency)
temp_map={}
#for a sentence
str =str.decode('ascii', 'ignore')
#tokenizer = nltk.tokenize.treebank.TreebankWordTokenizer()
#tokens=tokenizer.tokenize(str)
tokens = str.split()
#print tokens
stemmer = PorterStemmer()
#small set of stopwords (remove you, are, and, I those kinds of words)
last =[]
#bigram_list=[]
for d in tokens:
d = d.split('-')
for c in d:
c=re.compile('[%s]' % re.escape(string.punctuation)).sub('', c)
#regular expression -> strip punctuations
if c!='':
try:
if int(c):
if len(c)!=4 and (c>2015 or c<1900): #keep years
c=stemmer.stem('NUM')
except Exception:
c = stemmer.stem(c.lower())
pass
last.append(c)
updateDF(temp_map,df_freq,c)
def new_lesk(context_sentence, ambiguous_word, pos=None, stem=True, hyperhypo=True):
ps = PorterStemmer()
max_overlaps = 0; lesk_sense = None
context_sentence = context_sentence.split()
for ss in wn.synsets(ambiguous_word):
# If POS is specified.
if pos and ss.pos is not pos:
continue
lesk_dictionary = []
# Includes definition.
lesk_dictionary+= ss.definition.split()
# Includes lemma_names.
lesk_dictionary+= ss.lemma_names
# Optional: includes lemma_names of hypernyms and hyponyms.
if hyperhypo == True:
lesk_dictionary+= list(chain(*[i.lemma_names for i in ss.hypernyms()+ss.hyponyms()]))
if stem == True: # Matching exact words causes sparsity, so lets match stems.
lesk_dictionary = [ps.stem(i) for i in lesk_dictionary]
context_sentence = [ps.stem(i) for i in context_sentence]
overlaps = set(lesk_dictionary).intersection(context_sentence)
if len(overlaps) > max_overlaps:
lesk_sense = ss
max_overlaps = len(overlaps)
return lesk_sense
class IntermediateTokensFeatureGenerator(EdgeFeatureGenerator):
"""
Generate the bag of words representation, masked text, stemmed text and
parts of speech tag for each of the tokens present between two entities in
an edge.
:param feature_set: the feature set for the dataset
:type feature_set: nala.structures.data.FeatureDictionary
:param training_mode: indicates whether the mode is training or testing
:type training_mode: bool
"""
def __init__(self, feature_set, training_mode=True):
self.feature_set = feature_set
"""the feature set for the dataset"""
self.training_mode = training_mode
"""whether the mode is training or testing"""
self.stemmer = PorterStemmer()
"""an instance of PorterStemmer"""
def generate(self, dataset):
for edge in dataset.edges():
sentence = edge.part.sentences[edge.sentence_id]
if edge.entity1.head_token.features['id'] < edge.entity2.head_token.features['id']:
first = edge.entity1.head_token.features['id']
second = edge.entity2.head_token.features['id']
for i in range(first+1, second):
token = sentence[i]
feature_name = '33_fwd_bow_intermediate_'+token.word+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '34_fwd_bow_intermediate_masked_'+token.masked_text(edge.part)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '35_fwd_stem_intermediate_'+self.stemmer.stem(token.word)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '36_fwd_pos_intermediate_'+token.features['pos']+'_[0]'
self.add_to_feature_set(edge, feature_name)
else:
first = edge.entity2.head_token.features['id']
second = edge.entity1.head_token.features['id']
for i in range(first+1, second):
token = sentence[i]
feature_name = '37_bkd_bow_intermediate_'+token.word+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '38_bkd_bow_intermediate_masked_'+token.masked_text(edge.part)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '39_bkd_stem_intermediate_'+self.stemmer.stem(token.word)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '40_bkd_pos_intermediate_'+token.features['pos']+'_[0]'
self.add_to_feature_set(edge, feature_name)
for i in range(first+1, second):
token = sentence[i]
feature_name = '41_bow_intermediate_'+token.word+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '42_bow_intermediate_masked_'+token.masked_text(edge.part)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '43_stem_intermediate_'+self.stemmer.stem(token.word)+'_[0]'
self.add_to_feature_set(edge, feature_name)
feature_name = '44_pos_intermediate_'+token.features['pos']+'_[0]'
self.add_to_feature_set(edge, feature_name)
def stemming(line):
stemmer = PorterStemmer()
line_array = line.split(" ")
for word in line_array:
replace_word = stemmer.stem(word)
#print replace_word
line = line.replace(word,replace_word)
return line
def stemming(line):
from nltk.stem import PorterStemmer
lmtzr = PorterStemmer()
words=[]
for word in line.split(' '):
words.append(lmtzr.stem(word))
line = ' '.join(words)
return line
def create_test(self, test_sentence, all_words):
ps = PorterStemmer()
words_token = word_tokenize(test_sentence.lower())
words_token = [ps.stem(w) for w in words_token]
# convert numbers to keyword DIGIT
words_tag = ['DIGIT' if word[1] == 'CD' else word[0] for word in pos_tag(words_token)]
t = {word: (word in words_tag) for word in all_words}
return t
def stemming(x,logger):
logger.info('Stemminization')
try:
st=PorterStemmer()
x = [st.stem(word) for word in x.split()]
return(" ".join(x))
except:
return(x)
def stem_text(sent, context=None):
processed_tokens = []
tokens = word_tokenize(sent)
porter = PorterStemmer()
for t in tokens:
t = porter.stem(t)
processed_tokens.append(t)
return " ".join(processed_tokens)
def stem(self,tokens):
"""method for stemming the tokens using nltk"""
stemmer = PorterStemmer() #instantiating the stemmer
stemmedTokens = set([]) #set for containing the stemmed tokens
for token in tokens:
stemmedTokens.add(stemmer.stem(token))
return stemmedTokens
def dummywhere(text):
print('Inside Where_Query')
count = 0
ps = PorterStemmer()
pre_cond_query = []
post_cond_query = []
select_query = []
comment1 = [text.lower()]
#print(text)
place = GeoText(text)
#print("Printing comment",comment1)
for i in range(0, len(comment1)):
token_comment = word_tokenize(comment1[i])
#print(token_comment)
if all(word not in 'who whose whom' for word in token_comment):
if ('over' in token_comment):
index1 = token_comment.index('over')
#print(index1)
token_comment.insert(index1, 'who')
elif ('under' in token_comment):
index1 = token_comment.index('under')
#print(index1)
token_comment.insert(index1, 'who')
comment = [' '.join(map(str, token_comment))]
for i in range(0, len(comment)):
token_comment = word_tokenize(comment[i])
#print(token_comment)
if ('whose' in token_comment):
index = token_comment.index('whose')
prequery = token_comment[:index]
print("Prequery", prequery)
postquery = token_comment[index:(len(token_comment))]
print("Postquery", postquery)
elif ('who' in token_comment):
index = token_comment.index('who')
prequery = token_comment[:index]
print("Prequery", prequery)
postquery = token_comment[index:(len(token_comment))]
print("Postquery", postquery)
for i in range(0, len(comment)):
token_comment = word_tokenize(comment[i])
tagged_comment = pos_tag(token_comment)
for i in range(0, len(prequery)):
tagged_comment1 = pos_tag(prequery)
for word, tag in tagged_comment1:
if ((tag == 'NNP' or tag == 'NN' and word == 'show'
or word == 'describe' or word == 'state') or word == 'show'
or word == 'tell' or word == 'give'):
pre_cond_query.append('Select')
if word in AttrList:
if (word == 'live'):
word = 'city'
if (word == 'female' or word == 'girls' or word == 'girl'
or word == 'male' or word == 'boys' or word == 'boy'):
word = 'gender'
if (word == 'enrolled' or word == 'admission'
or word == 'admitted'):
word = 'registration_date'
if (word == 'studying' or word == 'studies' or word == 'study'):
word = 'class'
if (word == 'roll' or word == 'serial' or word == 'no.'):
word = 'roll_no'
pre_cond_query.append(lemmatizer.lemmatize((word)))
print(pre_cond_query)
pre_cond_query.extend(['from', 'Student', 'where'])
if (pre_cond_query[0] != 'Select'):
pre_cond_query.insert(0, 'Select')
print("Preconditional Query: ", pre_cond_query)
for i in range(0, len(postquery)):
tagged_comment2 = pos_tag(postquery)
for word, tag in tagged_comment2:
if word in AttrList:
if (word == 'live'):
word = 'city'
if (word == 'female' or word == 'girls' or word == 'girl'
or word == 'male' or word == 'boys' or word == 'boy'):
word = 'gender'
if (word == 'enrolled' or word == 'admission'
or word == 'admitted'):
word = 'registration_date'
if (word == 'studying' or word == 'studies' or word == 'study'):
word = 'class'
if (word == 'roll' or word == 'serial' or word == 'no.'):
word = 'roll_no'
post_cond_query.append(lemmatizer.lemmatize((word)))
if (word == 'age'):
for word, tag in tagged_comment:
if (word == 'less' or word == 'under'):
post_cond_query.append('<')
if (word == 'more' or word == 'over' or word == 'above'):
post_cond_query.append('>')
if (tag == 'CD'):
post_cond_query.append(word)
if ('>' not in post_cond_query and '<' not in post_cond_query):
post_cond_query.insert(-1, '=')
if (word == 'roll_no'):
for word, tag in tagged_comment:
if (word == 'less' or word == 'under'):
post_cond_query.append('<')
if (word == 'more' or word == 'over' or word == 'above'):
post_cond_query.append('>')
if (tag == 'CD'):
post_cond_query.append(word)
if ('>' not in post_cond_query and '<' not in post_cond_query):
post_cond_query.insert(-1, '=')
if (word == 'city'):
post_cond_query.extend(['='])
if (len(place.cities) == 0):
post_cond_query.append("'" + token_comment[-1] + "'")
else:
post_cond_query.append(str(place.cities).strip('[]'))
if (word == 'gender'):
post_cond_query.extend(['='])
if ('girls' in token_comment or 'girl' in token_comment
or 'female' in token_comment):
post_cond_query.append("'female'")
else:
post_cond_query.append("'male'")
if (word == 'name'):
post_cond_query.append("=")
post_cond_query.append("'" + token_comment[-1] + "'")
if (word == 'registration_date'):
post_cond_query.extend(['='])
for word, tag in tagged_comment:
if (tag == 'CD'):
post_cond_query.append("'" + word + "'")
print("PostConditional Query", post_cond_query)
cond_query = pre_cond_query + post_cond_query
condi_query = ' '.join(map(str, cond_query))
print('FINAL QUERY--> ' + condi_query)
text1.insert(END, condi_query)
def form_whereallquery(text):
print("From all")
ps = PorterStemmer()
cond_query = []
select_query = []
comment = [text.lower()]
place = GeoText(text)
for i in range(0, len(comment)):
token_comment = word_tokenize(comment[i])
tagged_comment = pos_tag(token_comment)
for word, tag in tagged_comment:
if ((tag == 'NNP' or tag == 'NN' and word == 'show'
or word == "give" or word == 'describe' or word == 'state')
or word == 'show' or word == 'tell' or word == 'give'):
select_query.append('Select')
cond_query.append('Select')
cond_query.append('*')
if word in AttrList:
if (word == 'live' or word == 'lives'):
word = 'city'
if (word == 'female' or word == 'girls' or word == 'girl'
or word == 'male' or word == 'boys' or word == 'boy'):
word = 'gender'
if (word == 'enrolled' or word == 'admission'):
word = 'registration_date'
if (word == 'studying' or word == 'studies'
or word == 'study'):
word = 'class'
if (word == 'roll' or word == 'serial' or word == 'no.'):
word = 'roll_no'
if (word == 'age'):
cond_query.extend(['from', ' Student', 'where', word])
for word, tag in tagged_comment:
if (word == 'less' or word == 'under'):
cond_query.append('<')
if (word == 'more' or word == 'over'
or word == 'above'):
cond_query.append('>')
if (tag == 'CD'):
cond_query.append(word)
if ('>' not in cond_query and '<' not in cond_query):
cond_query.insert(-1, '=')
if (word == 'city' or word == 'residence' or word == 'live'):
word = 'city'
cond_query.extend(['from', 'Student', 'where', word, '='])
if (len(place.cities) == 0):
cond_query.append("'" + token_comment[-1] + "'")
else:
cond_query.append(str(place.cities).strip('[]'))
if (word == 'gender'):
cond_query.extend(['from', 'Student', 'where', word, '='])
if ('girls' in token_comment or 'girl' in token_comment
or 'female' in token_comment):
cond_query.append("'female'")
else:
cond_query.append("'male'")
if (word == 'registration_date'):
for word, tag in tagged_comment:
if (tag == 'CD'):
cond_query.extend(
['from', 'Student', 'where', word, '='])
cond_query.append("'" + word + "'")
if (word == 'name'):
cond_query.extend(['from', 'Student', 'where', word, '='])
cond_query.append("'" + token_comment[-1] + "'")
if (word == 'class'):
cond_query.extend(['from', 'Student', 'where', word, '='])
cond_query.append("'" + token_comment[-1] + "'")
if (word == 'roll_no'):
cond_query.extend(['from', ' Student', 'where', word])
for word, tag in tagged_comment:
if (word == 'less' or word == 'under'):
cond_query.append('<')
if (word == 'more' or word == 'over'
or word == 'above'):
cond_query.append('>')
if (tag == 'CD'):
cond_query.append(word)
if ('>' not in cond_query and '<' not in cond_query):
cond_query.insert(-1, '=')
if (cond_query[0] != 'Select'):
cond_query.insert(0, 'Select')
condi_query = ' '.join(map(str, cond_query))
print('FINAL QUERY--> ' + condi_query + ';')
text1.insert(END, condi_query)
def form_countquery(text):
print("From Count Query")
ps = PorterStemmer()
place = GeoText(text)
cond_query = []
select_query = []
comment = [text.lower()]
#print(text)
for i in range(0, len(comment)):
token_comment = word_tokenize(comment[i])
#print(token_comment)
tagged_comment = pos_tag(token_comment)
#print('tagged comment', tagged_comment)
#print([(word, tag) for word, tag in tagged_comment])
cond_query.append('Select')
cond_query.append('COUNT(*)')
for word, tag in tagged_comment:
if (word == 'elder' or word == 'older' or word == 'under'
or word == 'above' or word == 'below'):
word = 'age'
if word in AttrList:
if (word == 'live' or word == 'lives'):
word = 'city'
if (word == 'female' or word == 'girls' or word == 'girl'
or word == 'male' or word == 'boys' or word == 'boy'):
word = 'gender'
if (word == 'enrolled' or word == 'admission'):
word = 'registration_date'
if (word == 'studying' or word == 'studies' or word == 'study'
or word == 'class'):
word = 'class'
#cond_query.append(lemmatizer.lemmatize((word)))
if (word == 'roll' or word == 'serial' or word == 'no.'):
word = 'roll_no'
if (word == 'age'):
cond_query.extend(['from', ' Student', 'where', word])
for word, tag in tagged_comment:
if (word == 'less' or word == 'under'):
cond_query.append('<')
if (word == 'more' or word == 'over' or word == 'above'
or word == 'older'):
cond_query.append('>')
if (tag == 'CD'):
cond_query.append(word)
if ('>' not in cond_query and '<' not in cond_query):
cond_query.insert(-1, '=')
if (word == 'city' or word == 'residence' or word == 'live'):
word = 'city'
cond_query.extend(['from', 'Student', 'where', word, '='])
if (len(place.cities) == 0):
cond_query.append("'" + token_comment[-1] + "'")
else:
cond_query.append(str(place.cities).strip('[]'))
if (word == 'gender'):
cond_query.extend(['from', 'Student', 'where', word, '='])
if ('girls' in token_comment or 'girl' in token_comment
or 'female' in token_comment):
cond_query.append("'female'")
else:
cond_query.append("'male'")
if (word == 'registration_date'):
for word, tag in tagged_comment:
if (tag == 'CD'):
cond_query.extend(
['from', 'Student', 'where', word, '='])
cond_query.append("'" + word + "'")
if (word == 'name'):
cond_query.extend(['from', 'Student', 'where', word, '='])
cond_query.append("'" + token_comment[-1] + "'")
if (word == 'class'):
cond_query.extend(['from', 'Student', 'where', word, '='])
cond_query.append("'" + token_comment[-1] + "'")
if (word == 'roll_no'):
cond_query.extend(['from', ' Student', 'where', word])
for word, tag in tagged_comment:
if (word == 'less' or word == 'under'):
cond_query.append('<')
if (word == 'more' or word == 'over' or word == 'above'):
cond_query.append('>')
if (tag == 'CD'):
cond_query.append(word)
if (cond_query[0] != 'Select'):
cond_query.insert(0, 'Select')
condi_query = ' '.join(map(str, cond_query))
if (len(condi_query) == 15):
condi_query = condi_query + ' from Student;'
print('FINAL QUERY--> ' + condi_query + ';')
text1.insert(END, condi_query)
"""
Name: Karan pankaj Makhija and Jeet Thakur
Version: Python 2.7
Title : Multiclass_Classification with Feature Engineering
"""
from sklearn import preprocessing, svm
from sklearn.feature_extraction.text import TfidfVectorizer, CountVectorizer
from sklearn import ensemble
import pandas as pd
from sklearn.model_selection import train_test_split
from nltk.corpus import stopwords
from sklearn import metrics
from nltk.stem import PorterStemmer
#Finding the stem of the words
ps = PorterStemmer()
my_stopwords = stopwords.words('english')
data = pd.read_json('Final1.json')
#Converting to lower case
data.iloc[:, 1] = data.iloc[:, 1].apply(
lambda x: " ".join(x.lower() for x in x.split()))
#Removing Punctuation
data.iloc[:, 1] = data.iloc[:, 1].str.replace('[^\w\s]', '')
#Removing StopWords
data.iloc[:, 1] = data.iloc[:, 1].apply(
lambda x: " ".join(ps.stem(x) for x in x.split()))
data.iloc[:, 1] = data.iloc[:, 1].apply(
lambda x: " ".join(x for x in x.split() if x not in my_stopwords))
X = data.iloc[:, 1].values
print(path + "/" + name)
next = path + "/" + name
nextnameL = [re.findall(r'[a-z]+', name)[0]]
nextname = nextnameL[0] ## Keep just the name
ListOfCompleteFilePaths.append(next)
ListOfJustFileNames.append(nextname)
# In[2]:
####################################################
## Create the Stemmer Function.........
######################################################
## Instantiate it
A_STEMMER = PorterStemmer()
#----------------------------------------
# Use NLTK's PorterStemmer in a function - DEFINE THE FUNCTION
#-------------------------------------------------------
def MY_STEMMER(str_input):
## Only use letters, no punct, no nums, make lowercase...
words = re.sub(r"[^A-Za-z\-]", " ", str_input).lower().split()
words = [A_STEMMER.stem(word) for word in words] ## Use the Stemmer...
return words
##################################################################
## Tokenize and Vectorize the text data from the corpus...
##############################################################
#!/usr/bin/env python
import textmining
import glob
from nltk.stem import PorterStemmer
tdm = textmining.TermDocumentMatrix()
ps = PorterStemmer()
files = glob.glob("*.txt")
print(files)
newcont = []
newst = ''
for f in files:
content = open(f).read()
content = content.replace('\n', ' ')
c = content.split()
for i in c:
newcont.append(ps.stem(i))
newst = " ".join(newcont)
tdm.add_doc(newst)
tdm.write_csv('matrix.csv', cutoff=1)
#!/usr/bin/env python
'''
Description : This Script will use the simple Stemming
technique from Python List
'''
from nltk.stem import PorterStemmer
from nltk.stem import LancasterStemmer
from nltk.stem import WordNetLemmatizer
#Stemming is a technique for removing affixes from a word
my_list = ['going', 'cars', 'went', 'came', 'coming']
print "*****************************"
print "The Porter Stemmer Algorithm"
print "*****************************"
stemmer = PorterStemmer()
for i in my_list:
print "%s => %s " % (i, stemmer.stem(i))
print
print "*******************************"
print "The Lancaster Stemmer Algorithm"
print "*******************************"
stemmer = LancasterStemmer()
for i in my_list:
print "%s => %s " % (i, stemmer.stem(i))
print
print "*****************************"
print " Wornet Lemmatization"
print "*****************************"
lem = WordNetLemmatizer()
class MounicaSelectorPhrasalTEMP:
def __init__(self,
ngram,
google_freq_file=RESOURCES['en']['nrr']['google'],
cutoff=0):
google_freq = {}
total = 0
nextone = 0
logger.debug("Loading google %d-gram frequencies..." % ngram)
for line in open(google_freq_file, encoding='utf-8'):
line_tokens = [t.strip() for t in line.strip().split('\t')]
try:
count = int(line_tokens[1])
if count > cutoff:
google_freq[line_tokens[0]] = np.log10(count)
total += 1
nextone = 0
except IndexError:
logger.debug(
"Error: the following has no corresponding word: " +
str(line_tokens))
pass
if (total % 1000 == 0 and nextone == 0):
nextone = 1
logger.debug("N-gram count: " + str(total))
logger.info("Total n-grams loaded: " + str(total))
self.ngram = ngram
self.google_freq = google_freq
self.ps = PorterStemmer()
self.lem = nltk.WordNetLemmatizer()
def select(self, sent, so, eo, candidates):
cand = list(candidates)
scores = self.get_scores(sent, so, eo, cand)
out = []
for i in range(0, len(scores)):
if (scores[i] != 0):
out.append(cand[i])
# This can filter out wrong tenses & duplicates before OR after ngram comparison
out = self.filter_out_tense(sent, so, eo, out)
return out
def get_scores(self, sent, so, eo, candidates):
t_b = word_tokenize(sent[:so])
t_a = word_tokenize(sent[eo:])
if len(t_b) < self.ngram - 1:
t_b = ['<S>'] + t_b
if len(t_a) < self.ngram - 1:
t_a = t_a + ['</S>']
scores = []
for word in candidates:
combos = t_b[-self.ngram + 1:] + [word] + t_a[:self.ngram - 1]
scores.append(0)
for j in range(0, len(combos) - self.ngram + 1):
phrase = ''
for word in combos[j:j + self.ngram]:
phrase += word + ' '
phrase = phrase.lower()
if phrase[:-1] in self.google_freq:
scores[-1] += self.google_freq[phrase[:-1]]
return scores
def filter_out_tense(self, sent, so, eo, candidates):
stems = []
out = []
word_tag = nltk.pos_tag([sent[so:eo]])[0][1]
stems.append(self.ps.stem(sent[so:eo]))
for word in candidates:
cand_stem = self.ps.stem(word)
if cand_stem not in stems:
stems.append(cand_stem)
try:
cand_tag = self.tag_for_lemmatizer(word)
if cand_tag is None:
out.append(
getInflection(self.lem.lemmatize(word,
pos=cand_tag),
tag=word_tag)[0])
else:
out.append(word)
except IndexError:
# Lemminflect does not support all POS tags - lemminflect.readthedocs.io/en/latest/tags/
out.append(word)
logger.debug(
"ERROR: Lemminflect cannot convert {} with type {}, skipping"
.format(word, word_tag))
return out
def tag_for_lemmatizer(self, word):
tag = nltk.pos_tag([word])[0][1][:2]
if tag in ['VB']:
return 'v'
elif tag in ['JJ']:
return 'a'
elif tag in ['RB']:
return 'r'
else:
return 'n'
def __init__(self):
self.stemmer = NltkPorterStemmer()
#emoji = resolveEmoji(text)
lang = payload['lang']
tstamp = time.mktime(tstmp)
return {'id':int(id), 'words':words, 'hashtags':hashtags, 'checkins':checkins, 'mentions':mentions, \
'ctype':q, 'crds':crds, 'timestamp':tstamp, 'lang':lang, 'urls':urls+media_urls}
except Exception as e:
print 'could not process object', obj['_id'], e
return None
else:
return None
def batch_process(workload):
prc = [process(d) for d in workload]
return prc
def build_tdelta(d=0, h=0):
return (datetime.now() - timedelta(days=d, hours=h))
tok_regex = re.compile(r'(?u)[@|#]?\w+')
punkt_regex = re.compile('[%s]' % re.escape(string.punctuation))
url_regex = re.compile(
r'http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+'
)
swords = load_stop_words()
lm = PorterStemmer()
from nltk.stem import PorterStemmer, WordNetLemmatizer
import re
from sklearn.feature_extraction.text import CountVectorizer, TfidfVectorizer
from sklearn.metrics import confusion_matrix, accuracy_score
import pickle
#Reading the Dataset
df = pd.read_csv('train.csv')
#Dropping the rows of null values
df = df.dropna()
messages = df.copy()
messages.reset_index(inplace=True)
ps = PorterStemmer()
lemma = WordNetLemmatizer()
corpus = []
for i in range(0, len(messages)):
review = (re.sub('[^a-zA-Z]', ' ', messages['title'][i])).lower()
review = review.split()
review = [
lemma.lemmatize(word, pos='n') for word in review
if word not in stopwords.words('english')
]
review = ' '.join(review)
corpus.append(review)
#Extract features with CountVectorizer
def proccess_tweet(df,
domain_terms,
col='text',
removeSlang=True,
spellCorrection=False):
'''
Function recieves
- a dataframe with 'text' column to be tokenize
- a set of domain saved terms to be skipped in the stop-removal (and slang) and stemming phase
The function apply stemming, stop-words removal, slang correction and tokenization
Spell correction is currently commented due to low performance
'''
# Initialize a ProterStemmer object
stemmer = PorterStemmer()
stop_words = set(stopwords.words('english'))
# Create a set of stop words, countries names, negation words and slang words (if needed) -> saved_words
# These words won't be stemmed, due to uses of these words in later phases
saved_words = get_saved_words(removeSlang)
# Tokenization, stemming and stopword (and punctuation) removal - the result is a list of the terms of the tweet.
# The '#' removed in the strip_punctuation function. Converted to normal word.
# Convert text to lower case
df['tokenized_text'] = df[col].apply(lambda text: text.lower())
print(' - Lower case completed')
df['tokenized_text'] = df['tokenized_text'].apply(
lambda x: x.replace('…', ''))
df['tokenized_text'] = df['tokenized_text'].apply(
lambda x: x.replace('"', ''))
df['tokenized_text'] = df['tokenized_text'].apply(
lambda x: x.replace('\n', ''))
# Drop links and mentions
# word_tokenizer(tweet) was replaced by .split(). Reason: probably done some extra pre-proccessing that cause damage
df['tokenized_text'] = df['tokenized_text'].apply(lambda tweet: [
strip_punctuation(token) for token in tweet.split()
if ((token not in stop_words) and ('http' not in token) and
('pic.twitter' not in token) and ('bitly.' not in token) and
(token != 'rt') and (token != '…') and (token != '"') and
('bit.ly' not in token) and (not token.startswith('@')))
])
print(' - Strip punctuation completed')
print(' - Stop-words removal completed')
print(' - Tokenization completed')
if removeSlang:
# Replace slang words
slang_dict = slang.slang_words()
df['tokenized_text'] = df['tokenized_text'].apply(lambda tweet: [
slang_dict[token] if token in slang_dict else token
for token in tweet
])
print(' - Slang words correction completed')
if spellCorrection:
# Spell correction for tokens, unless they are domain terms
df['tokenized_text'] = df['tokenized_text_no_spell'].apply(
lambda tokens: [
str(TextBlob(token).correct())
if token not in domain_terms else token for token in tokens
])
# spelling correction feature
df['num_spell_errors'] = df[[
'tokenized_text_no_spell', 'tokenized_text'
]].apply(lambda x: spell_correction(x[0], x[1]))
print(' - Spell correction completed')
# Before using Porter stemmer - use domain stemmer and stem words that Porter stems badly.
domainStemmer = domain_stemmer()
# Stem it to words that are in domain_terms, so Porter stemmer will skip these words
df['tokenized_text'] = df['tokenized_text'].apply(lambda tokens: [
domainStemmer[token] if token in domainStemmer else token
for token in tokens
])
# Stem tokens, unless they are domain terms (or length = 1) or saved words
df['tokenized_text'] = df['tokenized_text'].apply(lambda tokens: [
stemmer.stem(token) if (token not in domain_terms and token not in
saved_words and len(token) > 1) else token
for token in tokens
])
print(' - Stemming phase completed')
# Remove empty tokens
df['tokenized_text'] = df['tokenized_text'].apply(
lambda tokens: [token for token in tokens if len(token) > 1])
print(' - Cleaning empty tokens completed')
print('Final number of features: {}'.format(df.shape[0]))
print('\nCOMPLETED: Pre-proccess')
print('----------------------\n----------------------')
return df
filtered_sentence = []
for w in word_tokens:
if w not in stop_words:
filtered_sentence.append(w)
filtered_sentence
filtered_sentence = [w for w in word_tokens if not w in stop_words]
print(word_tokens)
print(filtered_sentence)
from nltk.stem import PorterStemmer
ps = PorterStemmer()
example_words = ["shop","shopping","shops"]
for w in example_words:
print(ps.stem(w))
new_text = "Raindrops are the size of bullets thundered on the castle windoes for days on end; the lake rose, the flower beds turned into muddy streams, and Hagrid's pumpkins swelled to the size of garden sheds."
words = word_tokenize(new_text)
for w in words:
print(ps.stem(w))
from nltk.corpus import state_union
from nltk.tokenize import PunktSentenceTokenizer
train_text = state_union.raw("2005-GWBush.txt")
sample_text = state_union.raw("2006-GWBush.txt")
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Oct 13 20:46:26 2018
an example of stemming e.g. writing becomes write (the stem)
Basically normalising sentences
Using
@author: jay
"""
from nltk.stem import PorterStemmer
from nltk.tokenize import word_tokenize
ps = PorterStemmer()
words = ["python", "pythoner", "pythoning", "pythonly"]
for w in words:
print(w, ' = ', ps.stem(w))
def preprocess(df):
'''
Preprocess text from dataframe. Splits reviews into sentences, then each sentence is preprocessed.
Returns dataframe with original and preprocessed text.
'''
# Split into sentences
nlp = spacy.load('en_core_web_sm')
review_ids = []
text = []
# Assuming the reviews aren't split and that reviews columns are 'review',
# for review_id, review in zip(df['review_id'], df['review']):
# sentences= [i for i in nlp(review).sents]
# for sentence in sentences:
# review_ids.append(review_id)
# text.append(str(sentence))
# No review IDs
for review in df['review']:
sentences= [i for i in nlp(review).sents]
for sentence in sentences:
# review_ids.append(review_id)
text.append(str(sentence))
reviews_df = pd.DataFrame()
# reviews_df['review_id'] = review_ids
reviews_df['raw_text'] = text
# Remove symbols,punctuations...
reviews_df['clean_text'] = reviews_df['raw_text'].str.replace('[^\w\s]','')
reviews_df['clean_text'] = reviews_df['clean_text'].str.replace('\d+', '')
reviews_df['clean_text'] = reviews_df['clean_text'].str.lower()
reviews_df['clean_text'] = reviews_df['clean_text'].str.replace('^https?:\/\/.*[\r\n]*', '')
reviews_df['clean_text'].replace('', np.nan, inplace=True)
drop = reviews_df[pd.isnull(reviews_df['clean_text'])].index
reviews_df.drop(drop , inplace=True)
reviews_df = reviews_df.reset_index(drop = True)
def preprocess_aspect(df):
'''
Preprocessing text for aspect extraction and classification.
Returns tf-idf/corpus, LDA model.
'''
def sent_to_words(sentences):
for sentence in sentences:
yield(gensim.utils.simple_preprocess(str(sentence), deacc=True)) # deacc=True removes punctuations
data_words = list(sent_to_words(df['clean_text']))
# Build the bigram and trigram models
bigram = gensim.models.Phrases(data_words, min_count=5, threshold=100) # higher threshold fewer phrases.
trigram = gensim.models.Phrases(bigram[data_words], threshold=100)
# Faster way to get a sentence clubbed as a trigram/bigram
bigram_mod = gensim.models.phrases.Phraser(bigram)
trigram_mod = gensim.models.phrases.Phraser(trigram)
stop_words = stopwords.words('english')
stop_words.extend(['from', 'subject', 're', 'edu', 'use'])
# Define functions for stopwords, bigrams, trigrams and lemmatization
def remove_stopwords(texts):
return [[word for word in simple_preprocess(str(doc)) if word not in stop_words] for doc in texts]
def make_bigrams(texts):
return [bigram_mod[doc] for doc in texts]
def make_trigrams(texts):
return [trigram_mod[bigram_mod[doc]] for doc in texts]
def lemmatization(texts, allowed_postags=['NOUN', 'ADJ', 'VERB', 'ADV']):
"""https://spacy.io/api/annotation"""
texts_out = []
for sent in texts:
doc = nlp(" ".join(sent))
texts_out.append([token.lemma_ for token in doc if token.pos_ in allowed_postags])
return texts_out
# Remove Stop Words
data_words_nostops = remove_stopwords(data_words)
# Form Bigrams
data_words_bigrams = make_bigrams(data_words_nostops)
# Initialize spacy 'en' model, keeping only tagger component (for efficiency)
# python3 -m spacy download en
nlp = spacy.load('en', disable=['parser', 'ner'])
# Do lemmatization keeping only noun, adj, vb, adv
data_lemmatized = lemmatization(data_words_bigrams, allowed_postags=['NOUN', 'ADJ', 'VERB', 'ADV'])
# Create Dictionary
id2word = corpora.Dictionary(data_lemmatized)
# Create Corpus
texts = data_lemmatized
# Term Document Frequency
corpus = [id2word.doc2bow(text) for text in texts]
return corpus, id2word
porter = PorterStemmer()
def stemSentence(sentence):
token_words=word_tokenize(sentence)
token_words
stem_sentence=[]
for word in token_words:
stem_sentence.append(porter.stem(word))
stem_sentence.append(" ")
return "".join(stem_sentence)
stemmed = []
for sentence in reviews_df['clean_text']:
stemmed.append(stemSentence(sentence))
reviews_df['stem_text'] = stemmed
# corpus, id2word = preprocess_aspect(reviews_df)
# Remove stop words
# stop_words = set(stopwords.words('english'))
# reviews_df['no_sw'] = reviews_df['clean_text'][:].apply(lambda x: ' '.join([word for word in x.split() if word not in (stop_words)]))
return reviews_df #, corpus, id2word
from math import log
from nltk import WordNetLemmatizer
from nltk.corpus import stopwords
from string import punctuation
from nltk import word_tokenize
from nltk.stem import PorterStemmer
import codecs
import string
import math
from collections import defaultdict
''' 詞形還原(Lemmatization)
例如：dogs -> dog, cats -> cat
doing -> do, done -> do
better -> good'''
wnl = WordNetLemmatizer()
stemmer = PorterStemmer()
#f = open("dict_RTS.txt","w", encoding = 'utf-8' )
#f.write( str(RTS))
#f.close()
# punctuation = （全部）標點符號
stop_words = stopwords.words('english') + list(punctuation)
DN = float(len(reuters.fileids()))
# type=dict，_RTS = 路透社資料字典
RTS = {
k: [
wnl.lemmatize(w.lower()) for w in reuters.words(k)
if w not in stop_words and not w.isdigit() and len(w.strip()) > 2
]
for k in reuters.fileids()
# Author : Sujay <*****@*****.**>
# Last Modified By : Sujay <*****@*****.**>
from math import log as l
import nltk
from nltk.tokenize import word_tokenize
from nltk.corpus import stopwords
from nltk.stem import PorterStemmer
from bccDataLoad_for_density import *
import matplotlib.pyplot as plt
#extra to be removed
import operator
stop_words = stopwords.words('english') + ['said' + 'v' + 'would' + 'could']
ps = PorterStemmer()
business_file = entertainment_file = politics_file = sport_file = tech_file = []
#get the data
def getFreqDist(data):
global tech_file, business_file, sport_file, entertainment_file, politics_file
if data == "business":
data = [
ps.stem(w) for w in word_tokenize(getBusiness())
if w not in stop_words
]
business_file = set(data)
elif data == "entertainment":
data = [
ps.stem(w) for w in word_tokenize(getEntertainment())
# reading input.txt file
text = open('input.txt', encoding="utf8").read()
# Tokenization
wtokens = word_tokenize(text)
stokens = sent_tokenize(text)
print("\n Word tokens:", wtokens)
print("\n Sentence tokens:", stokens)
# POS
pos = nltk.pos_tag(wtokens)
print("\n Parts of Speech:", pos)
# Stemming
pstem = PorterStemmer()
lstem = LancasterStemmer()
sstem = SnowballStemmer("english")
pstem_output = ' '.join([pstem.stem(w) for w in wtokens])
lstem_output = ' '.join([lstem.stem(w) for w in wtokens])
sstem_output = ' '.join([sstem.stem(w) for w in wtokens])
print("\n PorterStemmer Stemming:\n", pstem_output)
print("\n LancasterStemmer Stemming:\n", lstem_output)
print("\n SnowballStemmer Stemming:\n", sstem_output)
# Lemmatization
lemmatizer = WordNetLemmatizer()
lem_output = ' '.join([lemmatizer.lemmatize(w) for w in wtokens])
print("\n Lemmatization: \n", lem_output)
# Trigram
from nltk.stem import PorterStemmer, LancasterStemmer
from nltk.tokenize import sent_tokenize, word_tokenize
import string
totneg = 0
totpos = 0
porter = PorterStemmer()
lancaster = LancasterStemmer()
stopfile = open("stopwords.txt", 'r')
stopwords = stopfile.read()
stopwords = stopwords.split()
negfile = open("negative-words.txt", 'r', encoding="ISO-8859-1")
negwords = negfile.read()
negwords = negwords.split()
posfile = open("positive-words.txt", 'r', encoding="ISO-8859-1")
poswords = posfile.read()
poswords = poswords.split()
#comment ="it sends you away a believer again and quite cheered at just that"
exclude = set(string.punctuation)
comment = ''.join(ch for ch in comment if ch not in exclude)
comment = comment.split()
x = ' '.join(j for j in comment if j not in stopwords)
x = x.split()
def stream(self, records):
if self.custom_stopwords:
custom_stopwords = self.custom_stopwords.replace(' ','').split(',')
for record in records:
if self.keep_orig:
record['orig_text'] = record[self.textfield]
#URL removal
if self.remove_urls:
record[self.textfield] = self.f_remove_urls(
record[self.textfield]
)
#Tokenization
if (self.base_word and self.base_type == 'lemma_pos') or self.force_nltk_tokenize:
#lemma_pos - if option is lemmatization with POS tagging do cleaning and stopword options now
if (self.base_word and self.base_type == 'lemma_pos'):
record['pos_tuple'] = pos_tag(
word_tokenize(
record[self.textfield]
),
tagset=self.pos_tagset
)
if self.default_clean and self.remove_stopwords:
if self.custom_stopwords:
stopwords = set(stop_words.words('english') + custom_stopwords)
else:
stopwords = set(stop_words.words('english'))
record['pos_tuple'] = [
[
re.sub(r'[\W\d]','',text[0]).lower(),
text[1]
]
for text in
record['pos_tuple']
if re.sub(r'[\W\d]','',text[0]).lower() not in stopwords
and not re.search(r'[\W]',text[0])
]
elif self.default_clean and not self.remove_stopwords:
record['pos_tuple'] = [
[
re.sub(r'[\W\d]','',text[0]).lower(),
text[1]
]
for text in
record['pos_tuple']
if not re.search(r'[\W]',text[0])
]
elif self.force_nltk_tokenize:
record[self.textfield] = word_tokenize(
record[self.textfield]
)
elif self.default_clean or (self.base_word and self.base_type == 'lemma'):
#https://stackoverflow.com/a/1059601
record[self.textfield] = re.split('\W+', record[self.textfield])
else:
record[self.textfield] = record[self.textfield].split()
#Default Clean
if self.default_clean and not self.base_type == 'lemma_pos':
record[self.textfield] = [
re.sub(r'[\W\d]','',text).lower()
for text in
record[self.textfield]
]
#Lemmatization with POS tagging
if self.base_word and self.base_type == 'lemma_pos':
lm = WordNetLemmatizer()
tuple_list = []
tag_list = []
record[self.textfield] = []
record['pos_tag'] = []
for text in record['pos_tuple']:
keep_text = lm.lemmatize(
text[0],
self.get_wordnet_pos(text[1])
)
if keep_text:
record[self.textfield].append(keep_text)
tuple_list.append([keep_text,text[1]])
tag_list.append(text[1])
record['pos_tag'] = tag_list
record['pos_tuple'] = tuple_list
#Lemmatization or Stemming with stopword removal
if self.remove_stopwords and self.base_word and self.base_type != 'lemma_pos':
if self.custom_stopwords:
stopwords = set(stop_words.words('english') + custom_stopwords)
else:
stopwords = set(stop_words.words('english'))
if self.base_type == 'lemma':
lm = WordNetLemmatizer()
record[self.textfield] = [
lm.lemmatize(text)
for text in
record[self.textfield]
if text not in stopwords
]
if self.base_type == 'stem':
ps = PorterStemmer()
record[self.textfield] = [
ps.stem(text)
for text in
record[self.textfield]
if text not in stopwords
]
#Lemmatization or Stemming without stopword removal
if not self.remove_stopwords and self.base_word:
if self.base_type == 'lemma':
lm = WordNetLemmatizer()
record[self.textfield] = [
lm.lemmatize(text)
for text in
record[self.textfield]
]
if self.base_type == 'stem':
ps = PorterStemmer()
record[self.textfield] = [
ps.stem(text)
for text in
record[self.textfield]
]
#Stopword Removal without Lemmatization or Stemming
if self.remove_stopwords and not self.base_word:
if self.custom_stopwords:
stopwords = set(stop_words.words('english') + custom_stopwords)
else:
stopwords = set(stop_words.words('english'))
record[self.textfield] = [
text
for text in
record[self.textfield]
if text not in stopwords
]
#Minimum term length
if self.term_min_len > 0:
record[self.textfield] = [
i
for i in record[self.textfield]
if len(i) >= self.term_min_len
]
#ngram column creation
(min_n,max_n) = self.ngram_range.split('-')
#if max_n > 1 and max_n >= min_n:
if int(max_n) > 1 and int(max_n) >= int(min_n):
max_n = int(max_n) + 1
ngram_extract = self.ngram(
[_f for _f in record[self.textfield] if _f],
int(min_n),
max_n
)
if ngram_extract:
for i in ngram_extract:
if not self.ngram_mix:
if 'ngrams_' + str(i[0]) not in record:
record['ngrams_' + str(i[0])] = []
record['ngrams_' + str(i[0])].append(i[1])
else:
if 'ngrams' not in record:
record['ngrams'] = []
record['ngrams'].append(i[1])
else:
if not self.ngram_mix:
for n in list(range(int(min_n),int(max_n))):
if n!=1:
record['ngrams_' + str(n)] = []
else:
if 'ngrams' not in record:
record['ngrams'] = []
#Final Multi-Value Output
if not self.mv:
record[self.textfield] = ' '.join(record[self.textfield])
try:
record['pos_tag'] = ' '.join(record['pos_tag'])
except:
pass
yield record
print("*****************Sentence Tokenizer*******************")
for s in senttokens:
print(s)
print("*****************Word Tokenizer*******************")
for w in wordtokens:
print(w)
print("*****************POS Tagging*******************")
print(nltk.pos_tag(wordtokens))
print("*****************Stemming*******************")
ps = []
ls = []
ss = []
print("*****************Porter Stemming*******************")
pStemmer = PorterStemmer()
for w in wordtokens:
ps.append(pStemmer.stem(w))
print(ps)
print("*****************Lancaster Stemming*******************")
lStemmer = LancasterStemmer()
for w in wordtokens:
ls.append(lStemmer.stem(w))
print(ls)
print("*****************Snowball Stemming*******************")
sStemmer = SnowballStemmer('english')
for w in wordtokens:
ss.append(sStemmer.stem(w))
print(ss)
print("*****************Lemmatization*******************")
def match(query, method, instance_url):
'''
search solr index using user query
'''
q_list = []
q_string = ''
solr = pysolr.Solr(instance_url)
tokens = word_tokenize(query)
stemmer = PorterStemmer()
tagged_tokens = pos_tag(tokens)
tagged_list = [tuple2str(t) for t in tagged_tokens]
tokens_clean = deleteStopWords(tokens)
lemmas = get_lemmatized_line(tagged_tokens)
stem_line = [stemmer.stem(t) for t in tokens_clean]
synonyms, hypernyms, hyponyms, meronyms, holonyms = get_semantic_features(
tagged_tokens, tokens)
# head_words = get_dependency_relations(lemmas, True)
print('user input features', ' ===> \n', 'text: \n', query, '\n',
'tokens: \n', tokens, '\n', 'pos tag: \n', tagged_tokens, '\n',
'remove_stopWords: \n', tokens_clean, '\n', 'lemmatized: \n', lemmas,
'\n', 'stemmed: \n', stem_line, '\n', 'synonyms: \n', synonyms, '\n',
'hypernyms: \n', hypernyms, '\n', 'hyponyms: \n', hyponyms, '\n',
'meronyms: \n', meronyms, '\n', 'holonymns: \n', holonyms, '\n\n')
pos_tag_data = '&'.join(tagged_list)
lemmas = '&'.join(lemmas.split())
stems = '&'.join(stem_line)
synonyms = '&'.join(synonyms.split())
hypernyms = '&'.join(hypernyms.split())
hyponyms = '&'.join(hyponyms.split())
holonyms = '&'.join(holonyms.split())
meronyms = '&'.join(meronyms.split())
if method == 3:
# head_words = '&'.join(head_words.split())
if tokens:
q_list.append('text:' + '&'.join(tokens))
if tokens_clean:
q_list.append('text_clean:' + '&'.join(tokens_clean))
if pos_tag_data:
q_list.append('pos_tag:' + pos_tag_data)
if lemmas:
q_list.append('lemmas:' + lemmas)
if stems:
q_list.append('stems:' + stems)
if synonyms:
q_list.append('synonyms:' + synonyms)
if hypernyms:
q_list.append('hypernyms:' + hypernyms)
if hyponyms:
q_list.append('hyponyms:' + hyponyms)
if meronyms:
q_list.append('meronyms:' + meronyms)
if holonyms:
q_list.append('holonymns:' + holonyms)
# if head_words:
# q_list.append('head_word:' + head_words)
if method == 4:
if tokens:
q_list.append('text:' + '&'.join(tokens) + '^0.5')
if pos_tag_data:
q_list.append('pos_tag:' + pos_tag_data + '^0.02')
if lemmas:
q_list.append('lemmas:' + lemmas + '^4')
if tokens_clean:
q_list.append('text_clean:' + '&'.join(tokens_clean) + '^5')
if stems:
q_list.append('stems:' + stems + '^1.5')
if synonyms:
q_list.append('synonyms:' + synonyms + '5')
if hypernyms:
q_list.append('hypernyms:' + hypernyms + '^5')
# if hyponyms:
# q_list.append('hyponyms:' + hyponyms + '^4')
# if head_words:
# q_list.append('head_word:' + head_words + '^0.5')
# if meronyms:
# q_list.append('meronyms:' + meronyms + '^1.4')
# if holonyms:
# q_list.append('holonymns:' + holonyms + '^1.4')
q_string = ', '.join(q_list)
print('The Solr query is q=%s, fl=\'id,text\'\n' % (q_string))
result = solr.search(q=q_string, fl='id,text')
for r in result:
print(r['id'])
print(' '.join(r['text']))
import nltk
from nltk.tokenize import word_tokenize
from nltk.corpus import stopwords
from nltk.corpus import wordnet
from nltk.stem import PorterStemmer
import string
nltk.download('punkt')
nltk.download('stopwords')
nltk.download('wordnet')
stemmer = PorterStemmer()
stop_words = stopwords.words('english')
inp = input("Enter String: ")
tokens = word_tokenize(inp)
clean_tokens = tokens = tokens[:]
for token in tokens:
if token in stop_words: clean_tokens.remove(token)
table = str.maketrans('', '', string.punctuation)
clean_tokens = [word.translate(table) for word in tokens]
all_synonyms = []
for word in clean_tokens:
for syn in wordnet.synsets(word):
for lemma in syn.lemmas():
all_synonyms.append(lemma.name())
import os
import pandas as pd
from nltk.tokenize import word_tokenize
from nltk.corpus import stopwords
import nltk
from nltk.stem import PorterStemmer
from sklearn.feature_extraction.text import CountVectorizer
from nltk.stem import WordNetLemmatizer
from imblearn.over_sampling import RandomOverSampler
import matplotlib.pyplot as plt
import seaborn as sns
my_lemmatizer = WordNetLemmatizer()
vector = CountVectorizer()
stemming = PorterStemmer()
nltk.download('stopwords')
nltk.download('punkt')
nltk.download('wordnet')
#Getting the stopwords corpora
stopwords_list = stopwords.words('english')
print(stopwords_list[:5])
#Loading the final merged dataset
youtube_train = pd.read_csv("C:/Users/prate/Desktop/ICT_solution/Data/final_data/final_data.csv",delimiter=',')
youtube_train_sen = youtube_train['video_title']
print(youtube_train_sen[1])
#Creating an empty array
final_sent = [];
#Initializing variables
count = 0
#Transform label to binary
#data.label = data.label.map(dict(REAL=1, FAKE=0))
# Visualising the dataset
import seaborn as sb
def create_distribution(dataFile):
return sb.countplot(x='Label', data=dataFile, palette='hls')
#create_distribution(data)
data = shuffle(data)
# Clean the text
eng_stemmer2 = PorterStemmer()
eng_stemmer = SnowballStemmer('english')
#nltk.corpus.stopwords.words('english').remove('not')
stopwords = set(nltk.corpus.stopwords.words('english'))
stopwords.remove('not')
def stem_tokens(tokens, stemmer):
stemmed = []
for token in tokens:
stemmed.append(stemmer.stem(token))
return stemmed
#tokens = data.iloc[3, 0]
def process_data(tokens):
from nltk.corpus import stopwords
from nltk.tokenize import word_tokenize
from nltk.stem import PorterStemmer
file_index = open('label/index', encoding='utf-8')
stop_words = set(stopwords.words('english')) # get stop word set
columns = ['label', 'word_count', 'text']
del_table = string.punctuation
str_table = str.maketrans('', '', '1234567890')
dict1 = {}
count = 0
file = open('output.txt', 'w')
spam_word = []
ps = PorterStemmer()
df = pd.DataFrame(columns=columns)
for line in file_index.readlines():
tmp = line.split(' ')
tmp_label = 1 if tmp[0] == 'spam' else 0 # mail label, spam -> 1, ham -> 0
tmp_path = tmp[1] # mail's path
tmp_path = tmp_path.replace('\n', '') # remove '\n' in path
tmp_path = tmp_path.replace('../', '') # remove '../' in path
if tmp_label == 1:
try:
count += 1
print(count)
mail_file = open(tmp_path, encoding='utf-8')
mail_text = mail_file.read()
else:
contents[fileNum] = contents.get(fileNum) + content
#print contents[fileNum]
print len(contents), '\n', fileNum
# In[3]:
doc = open('classification.txt', 'rb')
classification2_text = doc.readlines()
# In[4]:
from nltk.stem import PorterStemmer
from nltk.tokenize import sent_tokenize, word_tokenize
ps = PorterStemmer()
# head of HTML file
f = open('HTML/search_keywords.html', 'w')
f.write("<html>\n")
f.write("<head> Search Keywords\n")
f.write(" <script type=\"text/javascript\" src=\"mktree.js\"></script>\n")
f.write(
" <link rel=\"stylesheet\" href=\"mktree.css\" type=\"text/css\">\n")
f.write("</head>\n\n")
f.write("<body>\n")
f.write("<ul class=\"mktree\">\n")
has_subdir = False
has_record = False
def preprocess_reviews(revs, word_process):
try:
stop_words = set(stopwords.words("english"))
processed_revs = []
ps = PorterStemmer()
lemmatizer = WordNetLemmatizer()
print(len(revs))
for rev in revs:
# Get the categories
if rev == '':
continue
rev = rev.split('|~|')
pro = rev[0]
con = rev[1]
adv = rev[2]
score = rev[3]
pre_post = rev[4]
rev_id = rev[5]
company_id = rev[6]
industry = rev[7]
comp_good_bad = rev[8]
# Tokenize the words
pro_words = word_tokenize(pro)
con_words = word_tokenize(con)
adv_words = word_tokenize(adv)
if word_process == "raw":
# Option 1: Filter the stopwords out and append the category
filtered_pros = [
w.lower() for w in pro_words if not w in stop_words
]
filtered_cons = [
w.lower() for w in con_words if not w in stop_words
]
filtered_adv = [
w.lower() for w in adv_words if not w in stop_words
]
elif word_process == "stem":
# Option 2: Filter the stopwords out, stem the words, and append the category
filtered_pros = [
ps.stem(w).lower() + ("_pro" if labels else "")
for w in pro_words if not w in stop_words
]
filtered_cons = [
ps.stem(w).lower() + ("_con" if labels else "")
for w in con_words if not w in stop_words
]
filtered_adv = [
ps.stem(w).lower() + ("_adv" if labels else "")
for w in adv_words if not w in stop_words
]
elif word_process == "lemma":
# Option 3: Filter the stopwords out, lemmatize the words, and append the category
filtered_pros = [
lemmatizer.lemmatize(w).lower() +
("_pro" if labels else "") for w in pro_words
if not w in stop_words
]
filtered_cons = [
lemmatizer.lemmatize(w).lower() +
("_con" if labels else "") for w in con_words
if not w in stop_words
]
filtered_adv = [
lemmatizer.lemmatize(w).lower() +
("_adv" if labels else "") for w in adv_words
if not w in stop_words
]
elif word_process == "features":
# Option 4: Only keep the words in the specified featureset
filtered_pros = [
ps.stem(w).lower() + ("_pro" if labels else "")
for w in pro_words if w in all_features
]
filtered_cons = [
ps.stem(w).lower() + ("_con" if labels else "")
for w in con_words if w in all_features
]
filtered_adv = [
ps.stem(w).lower() + ("_adv" if labels else "")
for w in adv_words if w in all_features
]
else:
print(
"Invalid word processing type. Please enter \"raw\", \"stem\", or \"lemma\". Exiting program..."
)
exit()
# Turn the filtered words back into a sentence and create a tuple of the review and the score
rev = (' '.join(word
for word in (filtered_pros + filtered_cons +
filtered_adv)), int(score), pre_post,
sampled, rev_id, company_id, industry, comp_good_bad)
# Append to the processed list
processed_revs.append(rev)
return processed_revs
except KeyboardInterrupt:
print('exit')
exit(1)
# Expand contractions (can skip since they are removed in the next step)
doc = contractions.fix(doc).replace(' ', ' ')
print('\nExpanded contractions.')
# Tokenize
tokens = word_tokenize(doc)
print(f'\nTokenizing:\n{tokens[:40]}...')
# Remove stop words
stop_words = set(stopwords.words("english"))
tokens = [w for w in tokens if w not in stop_words]
print('\nRemoved stopwords.')
# Lemmatization
wordnet_lem = WordNetLemmatizer()
tokens_lem = [wordnet_lem.lemmatize(token) for token in tokens]
# Stemming (skip as word meaning is lost)
porter_stem = PorterStemmer()
tokens_stem = [porter_stem.stem(token) for token in tokens_lem]
print(f'\nAfter Lemmatization and removing Stop words:\n{tokens_lem[:40]}...')
# Word frequency
fdist = FreqDist(tokens_lem)
print(f'\nMost common words:\n{fdist}')
print(fdist.most_common(20))
fdist.plot(20, cumulative=False)
# END
def stemming(tokens):
ps = PorterStemmer()
StemmedWords = [ps.stem(words) for words in tokens]
return StemmedWords