def word_vec_matrix(self, model, one_hot):
training_data = {"article":[],"summaries":[]}
i=1
for k in range(len(self.data["articles"])):
art=[]
summ=[]
for word in wt(self.data["articles"][k].lower()):
try:
art.append(model.wv.word_vec(word))
except Exception as e:
print(e)
for word in wt(self.data["summaries"][k].lower()):
try:
summ.append(one_hot[word])
#summ.append(model.wv.word_vec(word))
except Exception as e:
print(e)
training_data["article"].append(art)
training_data["summaries"].append(summ)
if i%100==0:
logger.info("progress: " + str(((i*100)/len(self.data["articles"]))))
i+=1
print('\007')
return training_data
def dict_build():
print("------------Building Dictionary------------")
#build dic from Uottawa an reuters json Corpus
# *Full text, Altered Text, Stemmed, stopwords removal, normalized
#Acess corpus
uottawa_json = os.path.dirname(os.path.join(
os.getcwd())) + "/Json_data/uottawa_corpus.json"
reuters_json = os.path.dirname(os.path.join(
os.getcwd())) + "/Json_data/final_reuters_corpus.json"
corpus_collection = [
uottawa_json, reuters_json
] #corpus_collection = ["reuters_corpus.json", "uottawa_corpus.json"]
#Dictionary Json Structure
dict = {
'fullText': set(),
'alteredText': set(),
'stemmedText': set(),
'stopWord': set(),
'normalized': set()
}
#Enumerate allows us to loop over something and have an automatic counter.
#docID -> article number starting with 1
#Find title body topic create snippet
for id, corpus_data in enumerate(corpus_collection):
with open(corpus_data) as corpus:
data = json.load(corpus)
for values in data:
tokenized_title = [
word.lower() for word in wt(values['title'])
if word not in string.punctuation and not any(
i.isdigit() for i in word) and word != ""
]
tokenized_description = [
word.lower() for word in wt(values['description'])
if word not in string.punctuation and not any(
i.isdigit() for i in word) and word != ""
]
#dict fulltext
dict['fullText'] |= set(tokenized_title)
dict['fullText'] |= set(tokenized_description)
#dict altered text [normalizing stemmed and stopwords removed title and description]
dict['alteredText'] |= normalize(
stemming(remove_stopwords(tokenized_title)))
dict['alteredText'] |= normalize(
stemming(remove_stopwords(tokenized_description)))
#stopwords removal
dict['stopWord'] |= remove_stopwords(tokenized_title)
dict['stopWord'] |= remove_stopwords(tokenized_description)
#stemming [porter stemmer]
dict['stemmedText'] |= stemming(tokenized_title)
dict['stemmedText'] |= stemming(tokenized_description)
#normalization
dict['normalized'] |= normalize(tokenized_title)
dict['normalized'] |= normalize(tokenized_description)
with open('dictionary.json', 'w') as outfile:
my_dict_lists = {k: list(v) for (k, v) in dict.items()}
json.dump(my_dict_lists, outfile, ensure_ascii=False, indent=4)
print("------------Done------------")
def preprocess_snli_jsonl(file_path, vocab_idx, out_file, vocab_size=30000):
X1 = []
X2 = []
l1 = []
l2 = []
Y = []
labels = {'neutral': 0, 'entailment': 1, 'contradiction': 2}
with codecs.open(file_path, 'r', 'utf-8') as f:
for line in f:
line = json.loads(line)
if line['gold_label'] not in labels:
continue
sentence1 = [w.lower() for w in wt(line['sentence1'])]
s1 = []
for w in sentence1:
s1.append(vocab_idx[w] if w in vocab_idx else vocab_size - 1)
sentence2 = [w.lower() for w in wt(line['sentence2'])]
s2 = []
for w in sentence2:
s2.append(vocab_idx[w] if w in vocab_idx else vocab_size - 1)
X1.append(np.array(s1))
X2.append(np.array(s2))
l1.append(len(s1))
l2.append(len(s2))
Y.append(labels[line['gold_label']])
writer = codecs.open(out_file, 'wb')
data = {'X1': np.array(X1), 'X2': np.array(X2), 'l1': np.array(l1), 'l2': np.array(l2), 'Y': np.array(Y)}
pickle.dump(data, writer)
writer.close()
def gen_signature(word):
"""Generate a signature for each candidate expansion, using contextual
information from the Brown corpus, as well as WordNet definitions and
examples (if applicable)."""
if word in gen_signature.dict:
return gen_signature.dict[word]
inds = find_matches(word)
if len(inds) > 50:
f = len(inds) / 50
inds = [inds[int(i * f)] for i in range(50)]
signature = defaultdict(int)
for i in inds:
for w in gen_context(i, brown):
signature[w] += 1
sig = {w for w in signature
if signature[w] > 1
and w not in stopwords.words('english') and w != ','}
if word in wn.words():
if wn.synsets(word) and str(wn.synsets(word)[0]).count("'") == 2:
define = (eval("wn.{}.definition()".format(
str(wn.synsets(word)[0]).lower())))
examples = (eval("wn.{}.examples()".format(
str(wn.synsets(word)[0]).lower())))
if examples:
for ex in examples:
sig.update([w for w in wt(ex)
if w not in stopwords.words('english')])
if define:
sig.update([w for w in wt(define)
if w not in stopwords.words('english')])
gen_signature.dict[word] = sig
return sig
def wordvecmatrix(model,data):
IO_data={"article":[],"summaries":[]}
i=1
for k in range(len(data["articles"])):
art=[]
summ=[]
for word in wt(data["articles"][k].lower()):
try:
art.append(model.wv.word_vec(word))
except Exception as e:
print(e)
for word in wt(data["summaries"][k].lower()):
try:
summ.append(onehot[word])
#summ.append(model.wv.word_vec(word))
except Exception as e:
print(e)
IO_data["article"].append(art)
IO_data["summaries"].append(summ)
if i%100==0:
print("progress: " + str(((i*100)/len(data["articles"]))))
i+=1
#announcedone()
print('\007')
return IO_data
def create_wordclouds(self, text, name_of_cloud, additional_stop_list, max_words, width, height, bigram = False):
text_nopunc = self.remove_punctuation(text, "", "")
text_lower = text_nopunc.lower()
stop = self.stopwords
stop.extend(additional_stop_list)
text_nostop = self.remove_stopword(text_lower, stop)
tokens = wt(text_nostop)
text_lem = self.lemmatize(tokens)
tokens_lem = wt(text_lem)
my_bigrams = nltk.bigrams(tokens_lem)
if bigram:
bigram_merged=list()
for line in my_bigrams:
bigram_merged.append(line[0]+' ' + line[1])
counts = collections.Counter(bigram_merged)
else:
counts = collections.Counter(tokens_lem)
final = counts.most_common(max_words)
max_count = max(final, key=operator.itemgetter(1))[1]
final = [(name, count / float(max_count))for name, count in final]
# tags = make_tags(final, maxsize=max_word_size)
# create_tag_image(tags, name_of_cloud+'.png', size=(width, height), layout=3, fontname='Crimson Text', background = (255, 255, 255))
# temp_cloud = " ".join(text for text, count in final)
word_cloud = WordCloud(font_path="fonts/Georgia.ttf",
width=width, height=height, max_words=max_words, stopwords=stop)
word_cloud.fit_words(final)
word_cloud.to_file(name_of_cloud + ".png")
def inference(x1, x2):
#tokenize and pad
x1 = wt(x1.lower().strip())
x2 = wt(x2.lower().strip())
if len(x1) >= 16:
x1 = x1[:16]
else:
while (len(x1) < 16):
x1.append("pad")
if len(x2) >= 16:
x2 = x2[:16]
else:
while (len(x2) < 16):
x2.append("pad")
q1 = []
q2 = []
for word in x1:
try:
q1.append(model1.wv.word_vec(word))
except Exception as e:
q1.append(model1.wv.word_vec("pad"))
continue
for word2 in x2:
try:
q2.append(model1.wv.word_vec(word2))
except Exception as e2:
q2.append(model1.wv.word_vec("pad"))
continue
x1 = np.asarray(q1, dtype='float32').reshape((1, 16, 256))
x2 = np.asarray(q2, dtype='float32').reshape((1, 16, 256))
sim_prob = siamese_model.predict([x1, x2])
return sim_prob[0][0]
def prepareData(CandidateList):
positiveText = ""
negativeText = ""
neutralText = ""
vectors = []
labels = []
for candidate in CandidateList:
positiveDict = candidate.positive
for item in positiveDict:
text = positiveDict[item].tweet
positiveText += text
vec = text.split()
vectors.append(vec)
labels.append("positive")
for candidate in CandidateList:
negativeDict = candidate.negative
for item in negativeDict:
text = negativeDict[item].tweet
negativeText += text
vectors.append(vec)
labels.append("negative")
for candidate in CandidateList:
neutralDict = candidate.neutral
for item in neutralDict:
text = neutralDict[item].tweet
neutralText += text
vectors.append(vec)
labels.append("neutral")
positiveTokens = wt(positiveText)
negativeTokens = wt(negativeText)
neutralTokens = wt(neutralText)
positiveDist = freq(positiveTokens)
negativeDist = freq(negativeTokens)
neutralDist = freq(neutralTokens)
tempVector = defaultdict()
mostCount = 30
mostPositive = positiveDist.most_common(mostCount)
mostNegative = negativeDist.most_common(mostCount)
mostNeutral = neutralDist.most_common(mostCount)
for mytuple in positiveDist.items():
if mytuple not in mostPositive and mytuple[1] > 1:
tempVector[len(tempVector)] = mytuple[0]
for mytuple in negativeDist.items():
if mytuple not in mostNegative and mytuple[1] > 1:
tempVector[len(tempVector)] = mytuple[0]
for mytuple in neutralDist.items():
if mytuple not in mostNeutral and mytuple[1] > 1:
tempVector[len(tempVector)] = mytuple[0]
print len(tempVector)
tempvector = {tempVector[w]: w for w in tempVector}
print len(tempvector)
return (vectors, labels, tempvector)
def kmtokens(text, *args):
if len(args)==0:
tokens=wt(text)
return [stemmer.stem(token.strip()) for token in tokens if len(token)>1 and not token in stopwords]
if args[0]=='pos':
goodpos=['N', 'J', 'R', 'V']
tokens=nltk.pos_tag(wt(text))
return [stemmer.stem(token[0].strip()) for token in tokens if len(token[0])>1 and not token[0] in stopwords]
def get_details(url_arg):
url = urlopen(url_arg)
html = url.read()
url.close()
soup = bs(html, "html.parser")
movie_name = " ".join(
wt(soup.title.get_text())[:wt(soup.title.get_text()).index('Reviews')])
total_reviews = int(wt(soup.find(align="right").get_text())[0])
total_pages = math.ceil(total_reviews / 10)
return (movie_name, total_reviews, total_pages)
def get_details(movie_url):
print(movie_url)
url = urlopen(movie_url)
html = url.read()
url.close()
soup = bs(html, "html.parser")
movie = " ".join(
wt(soup.title.get_text())[:wt(soup.title.get_text()).index("Reviews")])
total_reviews = int(wt(soup.find(align="right").get_text())[0])
total_pages = int(math.ceil(total_reviews / 10))
return (movie, total_reviews, total_pages)
def removeStopWords(t):
stop_words = stopwords.words("english")
word_feature_vector = []
for word in wt(t):
if word not in stop_words:
word_feature_vector.append(word)
return word_feature_vector
def analyze(text):
text = text.lower()
text = text.translate(str.maketrans('', '', string.punctuation))
print(text)
token_words = wt(text, 'english')
print(token_words)
complete_text = []
for word in token_words:
if word not in stopwords.words('english'):
complete_text.append(word)
s_count = sexual_count(complete_text)
p_count = physical_count(complete_text)
slurs_count = slurs_count(complete_text)
if (s_count == 0) and (p_count == 0) and (slurs_count == 0):
return "Good news! Content warning are not aplicable to this literature!"
else:
output = """ """
s = "There are " + s_count + " instances of sexually violent words."
p = "There are " + p_count + " instances of physically violent words."
ss = "There are " + slurs_count + " instances of physically violent words."
output = s + p + ss
return output
def process_unlabel_lapt_for_bilstmcrf(input_fn, output_fn):
if os.path.exists(output_fn):
print('data already exists', output_fn)
return
res = []
for f in os.listdir(input_fn):
if not f.endswith('json'):
continue
f = open(input_fn + '/' + f)
js = json.load(f)
f.close()
reviews = js['Reviews']
contents = [r['Content'] for r in reviews if r['Content'] is not None]
res.extend(contents)
with open(output_fn, 'w') as f:
for content in res:
content = content.strip().lower()
sents = st(content)
for sent in sents:
tokens = wt(sent)
for token in tokens:
f.write(token.encode('utf-8'))
f.write(' O\n')
f.write('\n')
def word_overlap_score(inverted_index, docs, vectors, lam, default_dist=1):
doc_len = len(docs)
score_mat = np.full((doc_len, doc_len), default_dist, dtype="float32")
index_array = lambda sents: reduce(
lambda accu, indx_array: accu + indx_array,
[inverted_index.get(word, []) for word in sents], [])
tokens = [wt(sents.replace('.', '')) for sents in docs]
words_inverded_index = list(map(index_array, tokens))
count_dict_list = list(map(Counter, words_inverded_index))
def get_score(i, j, intersect):
n1 = len(tokens[i])
n2 = len(tokens[j])
overlap = 1 - 2 * float(intersect) / max(n1 + n2, 1)
cosine = cosine_similarity(vectors[i].T, vectors[j].T)
final_score = max((1 - lam) * overlap + lam * cosine.all(), 0)
score_mat[i][j] = final_score
score_mat[j][i] = final_score
[[get_score(i, j, count_dict_list[i][j]) \
for j in count_dict_list[i] if j >= i] \
for i in tqdm(range(doc_len))]
return score_mat
def stem_words(data):
def feature_tokens(tokens):
stemtokens = list()
for i in range(len(tokens)):
if tokens[i] == 'not':
i += 1
continue
if tokens[i] not in stop_words and not tokens[i].endswith("i"):
stemmed = ps.stem(tokens[i])
if len(stemmed) > 2:
stemtokens.append(stemmed)
return stemtokens
# initiate list for counting word frequencies in the list of documents
new_train = list()
for rawtext in data:
# remove line breaks, indenting, punctuation, contractions
text = processText(rawtext)
# adds all stems that aren't stopwords
tokens = wt(text)
stemtokens = feature_tokens(tokens)
new_train.append(' '.join(stemtokens))
# print(new_train)
return new_train
def check_nouns_adverbs_adjectives(sentence):
tokenized = wt(sentence)
tags = nltk.pos_tag(tokenized)
return " ".join([
i[0] for i in tags
if (i[1][0] == 'N') or (i[1][0] == 'R') or (i[1][0] == 'J')
])
def normalize_query_and(q):
q = wt(q)
normalized_q = []
for word in q:
if word not in punctuation:
normalized_q.append(stemmer.stem(word))
return normalized_q
def preprocessTxt(txtfile, newfile):
with open(txtfile, 'r') as reader:
data = reader.readlines()
reader.close()
new_data = []
renew_data = []
pro_data = []
for line in data:
sents = wt(line.strip())
new_data.append(sents)
with open(newfile, 'w') as etf:
for line in new_data:
renew_line = []
pro_line = []
for word in line:
word = str.lower(word)
renew_line.append(word)
etf.write('{} '.format(word))
if word[0].isalpha():
pro_line.append(word)
else:
pass
renew_data.append(renew_line)
pro_data.append(pro_line)
etf.write('\n')
etf.close()
print('txtfile preprocessed.')
return renew_data, pro_data
def build_vocab(train_file, vocab_file):
vocab = defaultdict(int)
with codecs.open(train_file, 'r', 'utf-8') as f:
for line in f:
d = json.loads(line)
sentence1 = [w.lower() for w in wt(d['sentence1'])]
sentence2 = [w.lower() for w in wt(d['sentence2'])]
for word in sentence1:
vocab[word] += 1
for word in sentence2:
vocab[word] += 1
writer = codecs.open(vocab_file, 'wb')
vocab = sorted(vocab.items(), key=itemgetter(1), reverse=True)
pickle.dump(vocab, writer)
writer.close()
def tfidfCounts(data):
# initiate list for counting word frequencies in the list of documents
count = {}
for rawtext in data:
# remove line breaks, indenting, punctuation, contractions
text = processText(rawtext)
# adds all stems that aren't stopwords
tokens = wt(text)
stemtokens = feature_tokens(tokens)
docwords = {}
# adds all bigrams in the form [not ___] (excluding stop words)
# stemtokens += [tokens[i] + ps.stem(tokens[i + 1]) for i in range(len(tokens)-1) if tokens[i] == 'not' and not tokens[i + 1] in stop_words]
for stem in stemtokens:
if not stem in count:
count[stem] = 0
if not stem in docwords:
docwords[stem] = 0
docInfo = 0
for word in docwords:
for stem in stemtokens:
if word == stem:
docwords[word] += 1
for word in docwords:
count[word] += math.log(
len(stemtokens) / docwords[word]) * docwords[word]
return count
def summonehot(corpus):
allwords=[]
annotated={}
for sent in corpus:
for word in wt(sent):
allwords.append(word.lower())
print(len(set(allwords)), "unique characters in corpus")
#maxcorp=int(input("Enter desired number of vocabulary: "))
maxcorp=int(len(set(allwords))/1.1)
wordcount = Counter(allwords).most_common(maxcorp)
allwords=[]
for p in wordcount:
allwords.append(p[0])
allwords=list(set(allwords))
print(len(allwords), "unique characters in corpus after max corpus cut")
#integer encode
label_encoder = LabelEncoder()
integer_encoded = label_encoder.fit_transform(allwords)
#one hot
onehot_encoder = OneHotEncoder(sparse=False)
integer_encoded = integer_encoded.reshape(len(integer_encoded), 1)
onehot_encoded = onehot_encoder.fit_transform(integer_encoded)
#make look up dict
for k in range(len(onehot_encoded)):
inverted = cleantext(label_encoder.inverse_transform([argmax(onehot_encoded[k, :])])[0]).strip()
annotated[inverted]=onehot_encoded[k]
return label_encoder,onehot_encoded,annotated
def encode(self, corpus):
all_words = []
one_hot = {}
for sent in corpus:
for word in wt(' '.join(sent)):
all_words.append(word.lower())
#print(len(set(all_words)), "unique words in corpus")
logger.info(str(len(all_words)) + 'unique words in corpus')
#maxcorp=int(input("Enter desired number of vocabulary: "))
maxcorp = int(len(set(all_words)) / 1.1)
wordcount = Counter(all_words).most_common(maxcorp)
all_words = []
for p in wordcount:
all_words.append(p[0])
all_words = list(set(all_words))
#print(len(all_words), "unique words in corpus after max corpus cut")
#logger.info(str(len(all_words)) + 'unique words in corpus after max corpus cut')
#integer encode
#label_encoder = LabelEncoder()
#integer_encoded = label_encoder.fit_transform(all_words)
#one hot
label_encoder = LabelEncoder()
integer_encoded = label_encoder.fit_transform(all_words)
onehot_encoder = OneHotEncoder(sparse=False)
#integer_encoded = integer_encoded.reshape(len(integer_encoded), 1)
onehot_encoded = onehot_encoder.fit_transform(np.array(all_words).reshape(-1, 1))
for i in range(len(onehot_encoded)):
word = label_encoder.inverse_transform([argmax(onehot_encoded[i, :])])[0].strip()
one_hot[word] = onehot_encoded[i]
#print(len(one_hot.keys()))
return one_hot
def makeEmbeddingMap(text, corpusCounts, numgram, maxperkey):
if numgram < 2:
return -1
freqs = getNgramCounts(text, numgram)
topgrams = getNMax(freqs, 2000)
stemmedWords = {}
onlyStem = {}
for entry in topgrams:
tokens = wt(entry[0])
tokens = [stemmer.stem(token) for token in tokens]
stem = " ".join(tokens)
if stem in stemmedWords:
stemmedWords[stem][entry[0]] = entry[1]
onlyStem[stem] += entry[1]
else:
stemmedWords[stem] = {}
stemmedWords[stem][entry[0]] = entry[1]
onlyStem[stem] = entry[1]
topgrams = getNMax(onlyStem, 1500)
vectorMap = {}
for word in corpusCounts:
vectorMap[word[0]] = list()
for gram in topgrams:
if len(vectorMap[word[0]]) - 1 < maxperkey and word[0] in gram[
0] and not gram[0] in vectorMap[word[0]]:
vectorMap[word[0]].append(gram[0])
return vectorMap
def normalize_query_and(q):
q = wt(q)
normalized_q = []
for word in q:
if word not in punctuation:
normalized_q.append(stemmer.stem(word))
return normalized_q
def feature_extractor(preprocessed_tweet):
feature = {}
word_and_tag = nltk.pos_tag(wt(preprocessed_tweet))
# add pos has a feature too if the accuracy is less
all_tags = []
all_words = []
for (w,t) in word_and_tag:
all_tags.append(t)
for (w,t) in word_and_tag:
if t in ["VB","VBD","VBN","VBP","VBZ","VBG"]:
all_words.append(w)
if t in ["JJ","JJR","JJS"]:
all_words.append(w)
if t in ["RB","RBS","RBR"]:
all_words.append(w)
if t in ["WRB","MD","IN","RP","CD","NN","NNP"]:
all_words.append(w)
for word in feature_bag_of_word:
feature[word] = (word in all_words)
for tag in tags:
feature[tag] = (tag in all_tags)
return feature
def proc_sentence(sentence):
raw_text = sentence.find('text').text.lower()
opinions = sentence.find('Opinions')
if opinions is None:
return (wt(raw_text), ['O'] * len(wt(raw_text)))
# make sure the target words will be separated by inserting spaces
text_for_tokenization = raw_text[:].replace('/', ' / ')
for opinion in opinions:
if 'target' in opinion.attrib and opinion.attrib[
'target'] is not 'NULL':
text_for_tokenization = text_for_tokenization.replace(
opinion.attrib['target'],
' ' + opinion.attrib['target'] + ' ')
tokens = wt(text_for_tokenization)
spans = get_spans(raw_text, tokens)
char_idx_to_word_idx = {s[1]: idx
for idx, s in enumerate(spans)
} # map origin index to the tokenized words
tags = ['O'] * len(spans)
#print(char_idx_to_word_idx)
if opinions is not None:
for opinion in opinions:
if 'from' not in opinion.attrib:
continue
sidx = int(opinion.attrib['from'])
eidx = int(opinion.attrib['to'])
if sidx == eidx == 0:
continue
token_sidx, token_eidx = 1000, 0
tag = 'B'
for idx in range(sidx, eidx):
if idx in char_idx_to_word_idx:
token_sidx = min(token_sidx, char_idx_to_word_idx[idx])
token_eidx = max(token_eidx, char_idx_to_word_idx[idx])
tags[char_idx_to_word_idx[idx]] = 'B'
for idx in range(token_sidx, token_eidx + 1):
tags[idx] = tag
tag = 'I'
if sidx not in char_idx_to_word_idx:
print('warning', tokens, text_for_tokenization, sidx,
spans, zip([s[0] for s in spans], tags))
#raise Exception('warning', tokens, text_for_tokenization, sidx, spans, zip([s[0] for s in spans], tags))
return (tokens, tags)
def predict(trained_model, testing_path):
print("Start predict module")
try:
with open('test_featuresets.dmp', 'rb') as fp:
print("Test featuresets found!")
documents = pickle.load(fp)
except:
print("No existing test featuresets. Make a new one.")
from os import listdir
pospath = testing_path + r"\pos"
negpath = testing_path + r"\neg"
posfiles = listdir(pospath)
negfiles = listdir(negpath)
documents = []
for fn in posfiles:
ff = open(pospath + '/' + fn, encoding='windows-1252')
ftok = [word.lower() for word in wt(ff.read())]
fset = set(ftok)
tmpdict = {}
for key in fset:
tmpdict[key] = ftok.count(key)
documents.append((tmpdict, 'pos'))
for fn in negfiles:
ff = open(negpath + '/' + fn, encoding='windows-1252')
ftok = [word.lower() for word in wt(ff.read())]
fset = set(ftok)
tmpdict = {}
for key in fset:
tmpdict[key] = ftok.count(key)
documents.append((tmpdict, 'neg'))
with open('test_featuresets.dmp', 'xb') as fp:
pickle.dump(documents, fp)
model_predictions = []
ground_truth = []
count = 0
for body, senti in documents:
count += 1
model_predictions.append(trained_model.classify(body))
ground_truth.append(senti)
print("Doc " + str(count) + " Done")
print("Finish predict module")
return model_predictions, ground_truth
def normalize_and():
for doc in content:
doc = wt(doc.lower())
sentence = []
for word in doc:
if word not in punctuation:
sentence.append(stemmer.stem(word))
processed_docs.append(sentence)
def parseStopWords(sentence):
words=wt(sentence)
english=st.words(english)
ss=''
for word in words:
if(word.lower() not in english):
ss=word+' '
return ss
def removeURLs(unprocessed_dataset_with_label):
for tweet in unprocessed_dataset_with_label:
tweet_words_array = wt(tweet["tweet"])
for word in list(tweet_words_array):
if word == 'https' or word == 'https…' or word == 'http' or word == 'http…' or word == ':' or word[:2] == '//':
tweet_words_array.remove(word)
tweet["tweet"] = " ".join(tweet_words_array)
return unprocessed_dataset_with_label
def normalize_and():
for doc in content:
doc = wt(doc.lower())
sentence = []
for word in doc:
if word not in punctuation:
sentence.append(stemmer.stem(word))
processed_docs.append(sentence)
def get_sents_vector(sents, model):
"""
Function to convert given sentence into vectors
:param sents: tokenized sentence
:param model: model
:return: sentence vectors
"""
return vectorize_sentence(wt(sents), model)
def get_inverted_index(docs):
tokesize = lambda x: wt(x)
tokens_array = list(map(tokesize, docs))
inverted_index = {}
_ = [[inverted_index.setdefault(word, []).append(i) \
for word in tokens_array[i]] \
for i in range(len(tokens_array))]
return inverted_index
def process_query(self): """Q.process_query() -- processes the user query, by tokenizing and stemming words. """ self.query = wt(self.query) self.processed_query = [] for word in self.query: if word not in self.stop_words and word not in self.punctuation: self.processed_query.append(self.stemmer.stem(word))
def normalized_and(): processed_docs = [] for doc in content: doc = wt(doc) sentence = [] for word in doc: if word not in punctuation: sentence.append(word) processed_docs.append(sentence)
def remove_stop_words_and_stem(soup):
result = get_soup_text(soup)
tokenized_text = wt(result)
filtered_array = []
for word in tokenized_text:
# Eliminating the stopwords
if word not in stop_words and word.isalpha():
# Only considering alphabetical strings
filtered_array.append(stemmer.stem(word))
return TextBlob(' '.join(filtered_array))
def tokenize(source):
words = wt(source.lower().replace("can't", "can").replace("won't", "will").replace("gonna", "go"))
words = filter(lambda x:x.isalpha() and len(x) > 1, words)
reformed = map(lambda x: (morphy(x) or x), words)
made = []
count = len(reformed)
for word in reformed:
if word not in made:
made.append(word)
return made, count
def normalize_query(q): q = re.sub(r'(,)([0-9]+)', r"\1 \2", q.lower()) q = re.sub(r'boundary', "four six", q) q = wt(q) normalized_q = [] for word in q: if word not in stop and word not in punctuation: if word in no_replace_query.keys(): word = no_replace_query[word] normalized_q.append(stemmer.stem(word)) return normalized_q
def normalize(): for doc in content: doc = re.sub(r'(,)([0-9]+)', r"\1 \2", doc.lower()) doc = wt(doc) sentence = [] for word in doc: if word not in stop and word not in punctuation: word = stemmer.stem(word) if word in no_replace.keys(): word = no_replace[word] sentence.append(word) processed_docs.append(sentence)
def process_corpus(self): """Q.process_corpus() -- processes the queries defined by us, by tokenizing, stemming, and removing stop words. """ for doc in self.corpus_list: doc = wt(doc) sentence = [] for word in doc: if word not in self.stop_words and word not in self.punctuation: word = self.stemmer.stem(word) sentence.append(word) self.processed_corpus.append(sentence)
def simHelper(T): ''' Given a token returns a pos tagged list ''' alphanum = letters+octdigits # part of speech word list for the text fullList = [word for subl in [pos_tag(wt(s)) for s in st(T)] for word in subl] # remove symbols and -NONE- tags from list by checking the first character of the word and tag posList = [word for word in fullList if word[1][0] in alphanum and word[0][0] in alphanum] return posList
def initial_work():
with open('C:/Users/Isha/Desktop/AldaSampling/data/StopWords.txt', 'rb') as infile:
splitwordslist = infile.read().decode('UTF-8')
myfilehtml = open('C:/Users/Isha/Desktop/AldaSampling/output/Processed/unsponsored/1010023_raw_html.txt')
soup = BeautifulSoup(myfilehtml,'html.parser')
for scriptdata in soup.findAll('script'):
scriptdata.extract()
result = soup.get_text().lower()
output=open("output.txt","w")
output.write(result)
tokenized_text = wt(result)
stop_words = wt(splitwordslist)
for words in tokenized_text:
if words not in stop_words:
if words.isalpha():
filtered_array.append(ps.stem(words))
print(len(filtered_array))
print(filtered_array)
filtered_doc = ' '.join(filtered_array)
print(filtered_doc)
list_of_docs.append(tblob(filtered_doc))
list_of_docs.append(tblob('experi unicorn astro table'))
print(list_of_docs)
def filter_sentences(corpus='rbc_se.txt', dic='names.txt', newfile='rbc_sent_filt_new.txt'):
name_dict = set([x.strip('\n') for x in open('.\\preprocessing\\' + dic, encoding='utf-8')])
text = open(corpus, encoding='utf-8')
new_file = open(newfile, 'w', encoding='utf-8')
for line in text:
tokens = wt(line.strip('\n'))
for word in tokens:
if word in punkt:
continue
word = word.lower()
if word in name_dict:
new_file.write(line)
break
text.close()
new_file.close()
def pos_tag(self, data, columns, tag):
result = pd.DataFrame(columns=columns)
data = data.dropna()
result.title = data.title
for index, row in data.iterrows():
if not isinstance(row['summary'], int):
#temp = self.normalize(row['summary'].strip('#'))
temp = row['summary']
pos = pos_tag(wt(temp))
temp = " ".join(noun[0] for noun in pos if noun[1] in tag)
print temp
result.loc[index, 'summary'] = unicode(temp)
# for c in columns:
# for index, row in data.iterrows():
# if not isinstance(row[c], int):
# temp = self.normalize(row[c])
# pos = pos_tag(wt(temp))
# temp = " ".join(noun[0] for noun in pos if noun[1] in tag)
# result.loc[index, c] = unicode(temp)
return result.dropna()
def summarize(self, text, n): sents = st(text) assert n <= len(sents) # assert is a way of making sure a condition holds true # will throw error if it is false word_sent = [wt(s.lower()) for s in sents] # list of lists of all the sentences self._freq = self._compute_frequencies(word_sent) ranking = defaultdict(int) for i,sent in enumerate(word_sent): # enumerate creates a tuple with index,element for each entry in the list # allows need for a counter variable, but makes it easy to index for word in sent: if word in self._freq: ranking[i] += self._freq[word] sents_idx = nlargest(n,ranking, key = ranking.get) return [sents[j] for j in sents_idx] # sexy list comprehension
def prepareData(CandidateList):
positiveText = ""
negativeText = ""
neutralText = ""
vectors = []
labels = []
for candidate in CandidateList:
positiveDict = candidate.positive
for item in positiveDict:
text = positiveDict[item].tweet
positiveText += text
vec = text.split()
vectors.append(vec)
labels.append("positive")
for candidate in CandidateList:
negativeDict = candidate.negative
for item in negativeDict:
text = negativeDict[item].tweet
negativeText += text
vectors.append(vec)
labels.append("negative")
for candidate in CandidateList:
neutralDict = candidate.neutral
for item in neutralDict:
text = neutralDict[item].tweet
neutralText += text
vectors.append(vec)
labels.append("neutral")
positiveTokens = wt(positiveText)
negativeTokens = wt(negativeText)
neutralTokens = wt(neutralText)
positiveDist = freq(positiveTokens)
negativeDist = freq(negativeTokens)
neutralDist = freq(neutralTokens)
tempVector = defaultdict()
mostCount = 30
mostPositive = positiveDist.most_common(mostCount)
mostNegative = negativeDist.most_common(mostCount)
mostNeutral = neutralDist.most_common(mostCount)
for mytuple in positiveDist.items():
if mytuple not in mostPositive and mytuple[1] > 1:
tempVector[len(tempVector)] = mytuple[0]
for mytuple in negativeDist.items():
if mytuple not in mostNegative and mytuple[1] > 1:
tempVector[len(tempVector)] = mytuple[0]
for mytuple in neutralDist.items():
if mytuple not in mostNeutral and mytuple[1] > 1:
tempVector[len(tempVector)] = mytuple[0]
print len(tempVector)
tempvector = {tempVector[w]: w for w in tempVector}
print len(tempvector)
return (vectors,labels,tempvector)
# average paragraph size wst = WhitespaceTokenizer() paraWordCounts = [len(wst.tokenize(p)) for p in paragraphs] # the approximate number of words in the document numWords = sum(paraWordCounts) # the average number of words per paragraph avgParagraphLen = mean(paraWordCounts) # rejoin the paragraphs text = ' '.join(paragraphs) # part of speech word list for the text text = [word for subl in [pos_tag(wt(s)) for s in st(text)] for word in subl] # remove symbols from list by checking the first character of the word text = [word for word in text if word[0][0] in alphanum] # convert words to lowercase and convert Penn Tree Bank tags to WordNet tags text = [(word[0].lower(), convertTag(word[1])) for word in text] # remove Nones text = [word for word in text if word[1]] nouns = [word for word in text if word[1] == 'n'] numNouns = len(nouns) verbs = [word for word in text if word[1] == 'v'] numVerbs = len(verbs)
# This shit doesn't make sense but oh well. The Experiment has been experimented. from nltk.stem import PorterStemmer from nltk.tokenize import word_tokenize as wt ps = PorterStemmer() # words = ["python", "pythoner", "pythoning", "pythoned", "pythonly"] # for w in words: # print ps.stem(w) new_text = "It is very important to be pythonly while you are pythoning with python. All pythoners have pythoned poorly at least once" words = wt(new_text) for w in words: print ps.stem(w)
def __extractSynSets(T): ''' Given a text T (as a string) find all words that have WordNet synsets @return a unique list of SynSet objects ''' ''' CONSTANTS ''' nounTags = ['NN','NNP','NNS','NNPS'] verbTags = ['VB','VBD','VBG','VBN','VBP','VBZ'] adjTags = ['JJ','JJR','JJS'] advTags = ['RB','RBR','RBS'] alphanum = letters+octdigits def convertTag(tag): ''' Converts a Penn Tree Bank POS tag to a WordNet @return the converted tag otherwise None ''' if tag in nounTags: return 'n' elif tag in verbTags: return 'v' elif tag in adjTags: return 'as' # adjectives in WordNet can be head adj 'a' or satellite adj 's' elif tag in advTags: return 'r' else: return None def getSynSet(w): ''' For a word 'w' with POS tag 'tag' find the corresponding WordNet synset @return the best matching sysnset for 'w' otherwise None ''' tag = w[1] word = w[0] # get the list of possible synsets for w sets = wn.synsets(word) if not tag or sets == []: return None # look through the list of possible synsets for the first one w/ a pos tag that matches 'tag' for s in sets: if s.pos in tag: return s return None # part of speech word list for the text fullList = [word for subl in [pos_tag(wt(s)) for s in st(T)] for word in subl] # remove symbols and -NONE- tags from list by checking the first character of the word and tag posList = [word for word in fullList if word[1][0] in alphanum and word[0][0] in alphanum] # convert words to lowercase and convert Penn Tree Bank tags to WordNet tags posList = [(word[0].lower(), convertTag(word[1])) for word in posList] # remove words for which there is no WordNet tag (i.e. tag is None) and remove duplicate values posList = list(set([word for word in posList if word[1]])) # for the words in the POS list create a list of syn sets using their tags (remove None values) synSets = [n for n in [getSynSet(w) for w in posList] if n] return synSets
'''
Beautifier is a module that does NLP on HTML files from the data for this project
'''
from bs4 import BeautifulSoup as bs
from nltk.tokenize import word_tokenize as wt
from nltk.stem import PorterStemmer
from textblob import TextBlob
stop_words = []
stemmer = PorterStemmer()
with open('res/StopWords.txt', 'rb') as infile:
stop_words_file = infile.read().decode('UTF-8')
stop_words = set(wt(stop_words_file))
def get_soup_text(soup):
for scriptdata in soup.findAll(["script", "style"]):
scriptdata.extract()
return soup.text.lower()
def remove_stop_words_and_stem(soup):
result = get_soup_text(soup)
tokenized_text = wt(result)
filtered_array = []
for word in tokenized_text:
# Eliminating the stopwords
if word not in stop_words and word.isalpha():
# Only considering alphabetical strings
filtered_array.append(stemmer.stem(word))
return TextBlob(' '.join(filtered_array))
def clean_tokens():
n_topics =100
# get all tweets
tw = [line.strip('\n') for line in file('corpus_full')]
# lower case and tokenize
print 'Lower casing'
tokens = [[word.lower() for word in wt(tt)] for tt in tw]
# filter punctuations
print 'Filtering punctuations'
punc = [',', '.', ':', ';', '?', '(', ')', '[', ']', '&', '!', '*',\
'@', '#', '$', '%']
tokens_unpunc = [[w for w in tk if not w in punc] for tk in tokens]
# filter stopping words
print 'Filtering stopping words'
english_stopwords = stopwords.words('english')
tokens_filtered = [[w for w in tk if not w in english_stopwords] for tk in\
tokens_unpunc]
# stemming
print 'Stemming words'
st = LancasterStemmer()
tokens_stemmed = [[st.stem(w) for w in tk] for tk in tokens_filtered]
# eliminate words with count == 1
'''
print 'Eliminating words appear once'
all_items = sum(tokens_stemmed, [])
print len(all_items)
print 'Building once'
once = set(t for t in set(all_items) if all_items.count(t) == 1)
print 'Generating final tokens'
final_tokens = [[s for s in tk if s not in once] for tk in tokens_stemmed]
'''
# eliminate some specific words and words that appear only once
count = collections.defaultdict(int)
for t in tokens_stemmed:
for w in t:
if w == 'http' or w[0 : 6] == '//t.co':
print w
else:
count[w] += 1
tokens_stemmed = [[st.stem(w) for w in tk] for tk in tokens_filtered]
tokens_final = [[w for w in tk if count[w] > 1] for tk in tokens_stemmed]
# LDA
logging.basicConfig(format = '%(asctime)s : %(levelname)s : %(message)s',\
level = logging.INFO)
dictionary = gensim.corpora.Dictionary(tokens_final)
print 'Building corpus for LDA'
corpus = [dictionary.doc2bow(t) for t in tokens_final]
print 'LDA'
lda = gensim.models.ldamodel.LdaModel(corpus = corpus, id2word = dictionary,
num_topics = n_topics)
print lda.print_topics()
# extract topics for tweets
topic_matrix = []
for i in range(98900):
topics = lda[dictionary.doc2bow(tokens_final[i])]
v = [0.] * n_topics
for t in topics:
v[t[0]] = t[1]
topic_matrix.append(v)
# write matrix to the disk
np.save('topic_matrix', topic_matrix)
# write topics to the disk
topics = lda.show_topics(-1)
with open('topics', 'a') as f:
for i, t in enumerate(topics):
f.write(str(i) + '-' + t + '\n')
'''
Created on Mar 24, 2011
@author: Blodstone
'''
from nltk import ne_chunk as nc
from nltk.tag import pos_tag
from nltk.tokenize import word_tokenize as wt
tokenizeWords = wt('Who is Samuel Pickering ?')
pos = pos_tag(tokenizeWords)
n = nc(pos)
print n
