def preprocess(data, stem_data, remove_stopwords):
processed = []
stemmer = PorterStemmer()
for file in data:
# lowercasing all text
file = str(file).lower()
# removing non-alpha characters
file = re.sub('[^a-zA-Z]', ' ', file)
# tokenizing articles
tokenized = word_tokenize(file)
# removing stop words from tokens
stop_removed_tokens = []
if remove_stopwords:
for word in tokenized:
if word not in stop_words:
stop_removed_tokens.append(word)
else:
stop_removed_tokens = tokenized
if stem_data:
stemmed = []
for token in stop_removed_tokens:
stemmed.append(stemmer.stem(token))
processed.append(stemmed)
else:
processed.append(stop_removed_tokens)
return processed
def stem_text(text):
"""
Return lowercase and (porter-)stemmed version of string `text`.
"""
text = utils.to_unicode(text)
p = PorterStemmer()
return ' '.join(p.stem(word) for word in text.split())
def get_top_labels(country_scores):
"""Output: Dictionary --> key = country, value = list of top labels"""
ps = PorterStemmer()
country_scores['stem'] = ps.stem_documents(
[str(word) for word in country_scores['label']])
country_scores = country_scores.sort_values(by="tfidf", ascending=False)
country_scores_pmi = country_scores.sort_values(by="pmi", ascending=False)
top_labels = [[] for x in range(country_scores['num_countries'][0])]
top_labels_pmi = [[]
for x in range(country_scores_pmi['num_countries'][0])]
used_stems = set()
used_stems_pmi = set()
for row in country_scores.itertuples():
if row.stem not in used_stems:
if len(top_labels[row.country]) < 40:
top_labels[row.country].extend([
row.label.lower().replace('_', ' ').strip(), row.tfidf,
row.pmi, row.country
])
used_stems.add(row.stem)
for row in country_scores_pmi.itertuples():
if row.stem not in used_stems_pmi:
if len(top_labels_pmi[row.country]) < 40:
top_labels_pmi[row.country].extend([
row.label.lower().replace('_', ' ').strip(), row.tfidf,
row.pmi, row.country
])
used_stems_pmi.add(row.stem)
return top_labels, top_labels_pmi
def assign_country_label_ids(country_scores, label_score, num_candidates, use_label_candidates):
"""Output: Dictionary --> key = country, value = label"""
ps = PorterStemmer()
country_scores['stem'] = ps.stem_documents([str(word) for word in country_scores['label']])
country_scores = country_scores.sort_values(by=label_score, ascending=False)
used_stems = set()
if use_label_candidates is True:
# print('USING SOFT LABELING')
final_labels = defaultdict(set)
final_ids = defaultdict(set)
for row in country_scores.itertuples():
if len(final_labels[row.country]) <= num_candidates and row.stem not in used_stems and row.stem not in BLACK_LIST:
final_labels[row.country].add([row.label.lower().replace('_', ' ').strip(), row.tfidf, row.pmi])
final_ids[row.country].add(int(row.label_id))
used_stems.add(row.stem)
else:
final_labels = {}
final_ids = {}
for row in country_scores.itertuples():
if row.country not in final_labels and row.stem not in used_stems and row.stem not in BLACK_LIST:
final_labels[row.country] = [row.label.lower().replace('_', ' ').strip(), row.tfidf, row.pmi]
final_ids[row.country] = row.label_id
used_stems.add(row.stem)
return final_labels, final_ids
def process(text):
p = PorterStemmer()
doc_nor = text.lower()
doc_sw = remove_stopwords(doc_nor)
doc_stem = p.stem_sentence(doc_sw)
stem = re.findall(r'[\w]+', doc_stem)
return doc_stem.split()
def preprocess(text):
#convert text to lower case
text = text.lower()
#removing whitespace
text.strip()
#removing digits
text = gensim.parsing.preprocessing.strip_numeric(text)
#text = ' '.join(s for s in text.split() if not any(c.isdigit() for c in s))
#print(text)
#remove stopwords
text = gensim.parsing.preprocessing.remove_stopwords(text)
#strip punctutation
text = gensim.parsing.preprocessing.strip_punctuation2(text)
#strip multiple whitepsace that might occur after we remove stopwords
text = gensim.parsing.preprocessing.strip_multiple_whitespaces(text)
p = PorterStemmer()
text = ' '.join(p.stem(word) for word in text.split())
#print(text)
return text
def dataToXYListRead(fileName):
with open(fileName) as file:
porter_stemmer = PorterStemmer()
lineCount = 0
wordSentenceDbLi = []
while True:
line = file.readlines(1)
if not line:
break
# if lineCount == 20:
# break
jsonLine = json.loads(line[0])
# noStopWords = remove_stopwords(jsonLine['text'])
# stemWords = porter_stemmer.stem(noStopWords)
stemWords = porter_stemmer.stem(jsonLine['text'])
tokenWords = simple_preprocess(stemWords, deacc=True)
# print(tokenWords)
wordSentenceDbLi.append(tokenWords)
lineCount += 1
# yelpDic = corpora.Dictionary(wordSentenceDbLi)
# yelpDic.save('yelpDictionary.dict')
# print(yelpDic.token2id)
# print(yelpDic[8])
return wordSentenceDbLi
def stem_text(text):
"""
Return lowercase and (porter-)stemmed version of string `text`.
"""
p = PorterStemmer()
return ' '.join(
p.stem(word) for word in
text.lower().split()) # lowercasing required by the stemmer
def document_preprocess(text):
p = PorterStemmer()
first = text.encode('ascii', 'ignore').decode('utf-8').lower()
second = preprocessing.remove_stopwords(first)
third = preprocessing.strip_punctuation(second)
fourth = preprocessing.strip_short(preprocessing.strip_numeric(third))
fifth = p.stem(fourth)
return fifth
def open_spider(self, spider):
# Create an empty model
w2v = gensim.models.Word2Vec([['seo']], min_count=1)
self.name = '/tmp/Word2Vec' + str(time.time())
# Save it
w2v.save(self.name)
self.p = PorterStemmer()
self.stop_words = set(stopwords.words('french'))
def token_stem(text):
tokens = simple_preprocess(text, deacc=True)
porter_stemmer = PorterStemmer()
stem_tokens = [porter_stemmer.stem(word) for word in tokens]
return stem_tokens
def preprocess_data(train_data, test_data):
custom_stopwords = set(ENGLISH_STOP_WORDS)
custom_stopwords.update(["say", "says", "said", "saying", "just", "year", "man", "men", "woman", \
"women", "guy", "guys", "run", "running", "ran", "run", "do", "don't", "does", "doesn't" , \
"doing", "did", "didn't", "use", "used", "continue", "number", "great", "big", "good", "bad", \
"better", "worse", "best", "worst", "actually", "fact", "way", "tell", "told", "include", "including", \
"want", "wanting", "will", "won't", "give", "given", "month", "day", "place", "area", "look", \
"looked", "far", "near", "get", "getting", "got", "know", "knows", "knew", "long", "week", "have", \
"has", "haven't", "hasn't", "having", "had", "hadn't", "not", "think", "thinking", "Monday", \
"Tuesday", "Wednesday", "Thursday", "Saturday", "Sunday", "high", "low", "thing", "there", "they're", \
"It", "I've", "I'd", "He's", "She's", "They've", "I'm", "You're", "your", "their", "his", "hers", \
"mine", "today", "yesterday", "it", "ve", "going", "go", "went", "lot", "don", "saw", "seen", "come", "came"])
titled_train_data = add_titles(train_data['Content'], train_data['Title'])
if test_data is not None:
titled_test_data = add_titles(test_data['Content'], test_data['Title'])
# Removing stopwords:
new_train_data = []
for doc in titled_train_data:
doc_wordlist = doc.split()
new_doc_wordlist = [
word for word in doc_wordlist if word not in custom_stopwords
]
new_doc = ' '.join(new_doc_wordlist)
new_train_data.append(new_doc)
if test_data is not None:
new_test_data = []
for doc in titled_test_data:
doc_wordlist = doc.split()
new_doc_wordlist = [
word for word in doc_wordlist if word not in custom_stopwords
]
new_doc = ' '.join(new_doc_wordlist)
new_test_data.append(new_doc)
p = PorterStemmer()
train_docs = p.stem_documents(new_train_data)
if test_data is not None:
test_docs = p.stem_documents(new_test_data)
print "my_method: Stemmed data."
vectorizer = TfidfVectorizer()
X = vectorizer.fit_transform(train_docs)
if test_data is not None:
Test = vectorizer.transform(test_docs)
else:
Test = None
print "my_method: Vectorized data"
svd_model = TruncatedSVD(n_components=200) # random_state=13
X = svd_model.fit_transform(X)
if test_data is not None:
Test = svd_model.transform(Test)
print "SVD'd data"
return X, Test
def find_documents(self, term, stemming=False):
stemmer = PorterStemmer()
if stemming:
term = stemmer.stem(term)
term_id = self.get_id_for_term(term)
if term_id < 0:
return set()
docs = self.get_related_documents(term_id)
return set(docs)
def cleanText(self, textToClean):
textLower = str(textToClean).lower()
englishText = "".join(
[char for char in textLower if char in string.printable])
textNoPunc = "".join(
[char for char in englishText if char not in string.punctuation])
textStop = remove_stopwords(textNoPunc)
porter = PorterStemmer()
textStemmed = porter.stem(textStop)
return (textStemmed.split())
def __iter__(self):
p = PorterStemmer()
for entry in scandir("./dblpfiledir"):
with open(entry.path, "r", encoding="utf-8") as f:
jsoncontent = json.load(f)
doc = jsoncontent["abstract"]
if len(doc) > 0:
doc = remove_stopwords(doc)
doc = p.stem_sentence(doc)
words = simple_preprocess(doc, deacc=True)
yield TaggedDocument(words=words,
tags=[jsoncontent['index']])
def preprocess_documents(documents):
# preprocess each doc
documents = [preprocess_doc(doc) for doc in documents]
# stem the documents
stemmer = PorterStemmer()
documents = stemmer.stem_documents(documents)
# split all the documents into list of tokens
documents = [doc.split() for doc in documents]
return documents
def __iter__(self):
p = PorterStemmer()
for index, row in self.train_data.iterrows():
name = row['ScriptLink']
with open('./movie_scripts/' + name) as file:
#print("Im here")
script = file.readlines()
script = "".join(script)
script = remove_stopwords(script)
script = p.stem_sentence(script)
words = simple_preprocess(script)
yield TaggedDocument(words=words, tags=[index])
def load_data(tweets_tsv, tweets_postag):
"""
Return tweets id,user id,tweets label,raw tweets,tokenized tweets,
tweets in PoS, PoS tagged tweets and stemmed tweets in a pandas Dataframe.
:param tweets_tsv: <SID><tab><UID><tab><CLASS><tab><TWITTER_MESSAGE>
:parm tweets_postag: ark-TweetNLP `./runTagger.sh --output-format conll --input-formt txt --input-field 4`
:rtype: pandas.DataFrame
"""
o = open(tweets_tsv, 'r', encoding='utf-8').readlines()
p = open(tweets_postag).read()
raw = p.split('\n\n')
raw_pos_data = [line.split('\n') for line in raw]
pos_data = []
for tweet in raw_pos_data:
pos_data.append([tuple(word_pos.split('\t')) for word_pos in tweet])
stemmer = PorterStemmer()
data = {}
for idx, line in enumerate(o):
tweet_id, user_id, adr, text = line.split('\t')
data[tweet_id] = {}
data[tweet_id]['user_id'] = user_id
data[tweet_id]['adr'] = adr
data[tweet_id]['raw_text'] = text
data[tweet_id]['stem_text'] = [
stemmer.stem(w_pos[0]) for w_pos in pos_data[idx]
]
data[tweet_id]['tok_text'] = [w_pos[0] for w_pos in pos_data[idx]]
data[tweet_id]['pos_token'] = [w_pos[1] for w_pos in pos_data[idx]]
data[tweet_id]['pos_text'] = [
'#'.join(list(w_pos)) for w_pos in pos_data[idx]
]
df = pd.DataFrame.from_dict(data, orient='index')
df.adr = df.adr.astype('int')
df.user_id = df.user_id.astype('int')
logger.info("Loaded dataframe from {0} and {1}".format(
tweets_tsv, tweets_postag))
logger.info("Dataframe information:\n")
df.info()
return df
def main():
############################## Setup Code #####################################
global document_index
path = "./myroot"
file3 = open("cmptext.txt", "w+")
number_of_documents = recursive_read(path, file3)
file3.close()
print 'All files read'
file3 = open("cmptext.txt", "r")
preprocess(file3, number_of_documents)
file3.close()
print 'All files processed'
print 'Word2Vec begins'
model = get_word2vec(number_of_documents) #includes trigrams
model.save('vocab.txt')
print 'Word2Vec done'
vocabulary = model.wv.vocab.keys()
inverted_index = get_inverted_index(vocabulary)
for item in inverted_index.keys():
if not inverted_index[item]:
del inverted_index[item]
with open("inverted-index.txt", "wb") as fp:
pickle.dump(inverted_index, fp)
fp.close()
get_tfidf_vectors(inverted_index, number_of_documents)
get_norms()
doc_num = 0
file1 = open("cmptext.txt", "r")
stemmer = PorterStemmer()
for document in file1:
spreprocessed = []
doc_num += 1
for line in document.split('. '):
temp1 = []
temp2 = []
temp1 = gensim.utils.simple_preprocess(line, max_len=20)
for word in temp1:
if word not in stop_words:
temp2.append(word)
spreprocessed.append(stemmer.stem_documents(temp2))
with open("spreprocessed" + str(doc_num) + ".txt", "w+") as fp:
pickle.dump(spreprocessed, fp)
fp.close()
del spreprocessed[:]
file1.close()
with open("document-index.txt", "wb") as fp:
pickle.dump(document_index, fp)
fp.close()
class Word2VecPipeline(object):
def open_spider(self, spider):
# Create an empty model
w2v = gensim.models.Word2Vec([['seo']], min_count=1)
self.name = '/tmp/Word2Vec' + str(time.time())
# Save it
w2v.save(self.name)
self.p = PorterStemmer()
self.stop_words = set(stopwords.words('french'))
def process_item(self, item, spider):
if 'title' in item:
# This time, we don't update the item, instead we build the model.
document = item.get('title') + ' ' + item.get('body')
words = [
word_tokenize(self.p.stem_sentence(s))
for s in sent_tokenize(document)
]
# Load current model
w2v = gensim.models.Word2Vec.load(self.name)
# Train our model
w2v.build_vocab(words, update=True)
w2v.train(words, total_examples=w2v.corpus_count, epochs=w2v.iter)
# Save it for the next item
w2v.save(self.name)
return item
def __init__(self,
docs: List[str],
index_path: str,
root: str = "lyrics/") -> None:
"""Initialize Indexer by assigning attributes and opening index file.
Args:
docs: List of documents filenames.
index_path: Path to index file.
root: Directory where songs lyrics is.
"""
self.root = root
self.docs = docs
self.stemmer = PorterStemmer()
self.get_word_count()
self.index = shelve.open(index_path)
def __init__(self):
self.morph = {'ru': MorphAnalyzer(), 'en': PorterStemmer()}
self.other_significance = 10
self.stopwords = dict()
with open('../thirdparty/stop_ru.json', 'r', encoding='utf-8') as f:
self.stopwords['ru'] = json.load(f)
with open('../thirdparty/stop_en.json', 'r', encoding='utf-8') as f:
self.stopwords['en'] = json.load(f)
def assign_country_label_ids(country_scores, label_score):
"""Output: Dictionary --> key = country, value = label"""
ps = PorterStemmer()
country_scores['stem'] = ps.stem_documents([str(word) for word in country_scores['label']])
country_scores = country_scores.sort_values(by=label_score, ascending=False)
used_stems = set()
final_labels = {}
final_ids = {}
for row in country_scores.itertuples():
if row.country not in final_labels and row.stem not in used_stems and row.stem not in BLACK_LIST:
final_labels[row.country] = [row.label.lower().replace('_', ' ').strip(), row.tfidf, row.pmi]
final_ids[row.country] = row.label_id
used_stems.add(row.stem)
return final_labels, final_ids
def get_top_labels(country_scores, label_score, num_candidates=5):
"""Output: Dictionary --> key = country, value = list of top labels"""
ps = PorterStemmer()
country_scores['stem'] = ps.stem_documents([str(word) for word in country_scores['label']])
country_scores = country_scores.sort_values(by=label_score, ascending=False)
num_labels_per_country = defaultdict(int)
top_labels = []
used_stems = set()
for row in country_scores.itertuples():
if row.stem not in used_stems:
if num_labels_per_country[row.country] < num_candidates:
top_labels.append([row.country, row.label_id, row.label.lower().replace('_', ' ').strip(), row.tfidf, row.pmi])
used_stems.add(row.stem)
num_labels_per_country[row.country] += 1
return top_labels
def preprocess(file_name, number_of_documents):
stemmer = PorterStemmer()
fp1 = open("preprocessed.txt", "wb")
fp2 = open("preprocessed-cmptext.txt", "wb")
pickle.dump(number_of_documents, fp1)
for line in file_name:
preprocess_list1 = gensim.utils.simple_preprocess(line, max_len=20)
preprocess_list2 = []
for word in preprocess_list1:
if word not in stop_words:
preprocess_list2.append(word)
pickle.dump(stemmer.stem_documents(preprocess_list2), fp1)
for word in preprocess_list2:
fp2.write(stemmer.stem(word.encode('utf-8')))
fp2.write(' ')
fp2.write('\n')
fp1.close()
fp2.close()
def spimi_invert(
files: List[str],
stemmer: PorterStemmer,
blocks_dir: str,
memory_available: int,
) -> List[str]:
"""SPIMI-Invert procedure.
Collect terms, docIDs, term-frequencies into a block (dictionary
of dictionaries) that fits in available memory, write each block's
dictionary to disk, and start a new dictionary for the next block.
Args:
files: List of filepaths.
stemmer: Gensim porter stemmer.
blocks_dir: Directory where blocks are saved.
memory_available: Available memory in bytes.
Returns:
List of filenames of saved blocks.
"""
memory_used = 0
outputed_blocks = []
block_index = 0
dictionary = {}
for docId, token in token_stream(files):
memory_used += sys.getsizeof(token)
term = stemmer.stem(token)
if term not in dictionary.keys():
dictionary[term] = {}
if docId not in dictionary[term].keys():
dictionary[term][docId] = 0
dictionary[term][docId] += 1 # save term freq. in document
if memory_used > memory_available:
# Sort terms and write to disk
with shelve.open(blocks_dir + "block" + str(block_index)) as f:
for k in sorted(dictionary.keys()):
f[k] = dictionary[k]
outputed_blocks.append("block" + str(block_index))
block_index += 1
memory_used = 0
dictionary = {}
# Save last block
if dictionary:
with shelve.open(blocks_dir + "block" + str(block_index)) as f:
for k in sorted(dictionary.keys()):
f[k] = dictionary[k]
outputed_blocks.append("block" + str(block_index))
return outputed_blocks
def get_task_topic_dist(ldah, task):
#clean, stem and tokenize the prompt/task string
task = clean_text(task)
task = PorterStemmer().stem_sentence(task)
tokens = word_tokenize(task)
tokens = [word for word in tokens if not word in stop_words]
#compute topic distribution and sort
dist = get_topic_dist(ldah, tokens)
dist.sort()
return dist
def processing(body_text):
p = PorterStemmer()
stopset = set([
'doi', 'preprint', 'copyright', 'org', 'https', 'et', 'al', 'author',
'figure', 'table', 'rights', 'reserved', 'permission', 'use', 'used',
'using', 'biorxiv', 'medrxiv', 'license', 'fig', 'fig.', 'al.',
'Elsevier', 'PMC', 'CZI', '-PRON-', 'usually', r'\usepackage{amsbsy',
r'\usepackage{amsfonts', r'\usepackage{mathrsfs',
r'\usepackage{amssymb', r'\usepackage{wasysym',
r'\setlength{\oddsidemargin}{-69pt', r'\usepackage{upgreek',
r'\documentclass[12pt]{minimal'
])
cStopwords = STOPWORDS.union(stopset)
resultlist = []
for text in body_text:
tokens = []
for item in gensim.parsing.preprocess_string(text):
if item not in cStopwords:
p.stem(item)
tokens.append(item)
yield model.infer_vector(tokens)
def __init__(self):
# info
self.cluster_info = dict()
self.article_info = dict()
if config_meta['word_tokenizer'] == 'bert':
self.word_tokenize = config.bert_tokenizer.tokenize
elif config_meta['word_tokenizer'] == 'nltk':
self.word_tokenize = nltk.tokenize.word_tokenize
else:
raise ValueError('Invalid word_tokenizer: {}'.format(
config_meta['word_tokenizer']))
self.sent_tokenize = nltk.tokenize.sent_tokenize
self.porter_stemmer = PorterStemmer()
if config_meta['texttiling']:
self.para_tokenize = TextTilingTokenizer()
# base pat
BASE_PAT = '(?<=<{0}> )[\s\S]*?(?= </{0}>)'
BASE_PAT_WITH_NEW_LINE = '(?<=<{0}>\n)[\s\S]*?(?=\n</{0}>)'
BASE_PAT_WITH_RIGHT_NEW_LINE = '(?<=<{0}>)[\s\S]*?(?=\n</{0}>)'
# query pat
self.id_pat = re.compile(BASE_PAT.format('num'))
self.title_pat = re.compile(BASE_PAT.format('title'))
self.narr_pat = re.compile(BASE_PAT_WITH_NEW_LINE.format('narr'))
# article pat
self.text_pat = re.compile(BASE_PAT_WITH_NEW_LINE.format('TEXT'))
self.graphic_pat = re.compile(BASE_PAT_WITH_NEW_LINE.format('GRAPHIC'))
self.type_pat = re.compile(BASE_PAT_WITH_NEW_LINE.format('TYPE'))
self.para_pat = re.compile(BASE_PAT_WITH_NEW_LINE.format('P'))
self.proc_params_for_questions = {
'rm_dialog': False,
'rm_stop': False,
'stem': True,
}
def stem_text(text):
"""Transform `s` into lowercase and stem it.
Parameters
----------
text : str
Returns
-------
str
Unicode lowercased and porter-stemmed version of string `text`.
Examples
--------
>>> from gensim.parsing.preprocessing import stem_text
>>> stem_text("While it is quite useful to be able to search a large collection of documents almost instantly.")
u'while it is quit us to be abl to search a larg collect of document almost instantly.'
"""
text = utils.to_unicode(text)
p = PorterStemmer()
return ' '.join(p.stem(word) for word in text.split())
def stem_text(text):
"""Transform `s` into lowercase and stem it.
Parameters
----------
text : str
Returns
-------
str
Unicode lowercased and porter-stemmed version of string `text`.
Examples
--------
>>> from gensim.parsing.preprocessing import stem_text
>>> stem_text("While it is quite useful to be able to search a large collection of documents almost instantly.")
u'while it is quit us to be abl to search a larg collect of document almost instantly.'
"""
#text = utils.to_unicode(text)
p = PorterStemmer()
return ' '.join(p.stem(word) for word in text.split())
def stem_text(text):
"""
Return lowercase and (porter-)stemmed version of string `text`.
"""
p = PorterStemmer()
return ' '.join(p.stem(word) for word in text.lower().split()) # lowercasing required by the stemmer
