def train(self, corpus, chunksize=10000, use_temp_files=True):
"""
train the underlying linear mappings.
@param corpus is a gensim corpus compatible format
@param use_temp_files determines whether to use temporary files to store the intermediate representations of
the corpus to train the next layer. Setting flag True will not greatly affect memory usage, but will temporarily
require a significant amount of disk space. Using temp files will strongly speed up training, especially as the
number of layers increases.
"""
ln.info("Training mSDA with %s layers. ")
if not use_temp_files:
ln.warn("Training without temporary files. May take a long time!")
self.reduction_layer.train(corpus, chunksize=chunksize)
current_representation = self.reduction_layer[corpus]
for layer_num, layer in enumerate(self.mda_layers):
# We feed the corpus through all intermediate layers to get the current representation
# that representation is then used to train the next layer
# this is memory-independent, but will probably be very slow.
ln.info("Training layer %s.", layer_num)
layer.train(current_representation, chunksize=chunksize)
if layer_num < len(self.mda_layers) - 1:
current_representation = layer[current_representation]
else:
ln.info("Using temporary files to speed up training.")
ln.info("Beginning training on %s layers." %
(len(self.mda_layers) + 1))
self.reduction_layer.train(corpus, chunksize=chunksize)
# serializing intermediate representation
MmCorpus.serialize(".msda_intermediate.mm",
self.reduction_layer[corpus],
progress_cnt=chunksize)
# load corpus to train next layer
current_representation = MmCorpus(".msda_intermediate.mm")
for layer_num, layer in enumerate(self.mda_layers):
layer.train(current_representation, chunksize=chunksize)
os.remove(".msda_intermediate.mm")
os.remove(".msda_intermediate.mm.index")
if layer_num < len(self.mda_layers) - 1:
MmCorpus.serialize(".msda_intermediate.mm",
layer[current_representation],
progress_cnt=chunksize)
current_representation = MmCorpus(".msda_intermediate.mm")
ln.info("mSDA finished training.")
def create_corpus(src, out_dir, no_below=20, keep_words=_DEFAULT_KEEP_WORDS):
"""\
"""
wordid_filename = os.path.join(out_dir, 'cables_wordids.pickle')
bow_filename = os.path.join(out_dir, 'cables_bow.mm')
tfidf_filename = os.path.join(out_dir, 'cables_tfidf.mm')
predicate = None # Could be set to something like pred.origin_filter(pred.origin_germany)
# 1. Create word dict
dct = Dictionary()
dct_handler = DictionaryHandler(dct)
handler = create_filter(dct_handler)
handle_source(src, handler, predicate)
dct.filter_extremes(no_below=no_below, no_above=0.1, keep_n=keep_words)
dct.save(wordid_filename)
# 2. Reiterate through the cables and create the vector space
corpus_handler = CorpusHandler(out_dir, dct=dct, allow_dict_updates=False)
handler = create_filter(corpus_handler)
handle_source(src, handler, predicate)
# 3. Load corpus
mm = MmCorpus(bow_filename)
# 4. Create TF-IDF model
tfidf = TfidfModel(mm, id2word=dct, normalize=True)
# 5. Save the TF-IDF model
MmCorpus.serialize(tfidf_filename, tfidf[mm], progress_cnt=10000)
def load_model(output_path):
"""
Load working model
Loads working model, BoW corpus and initial dataframe with tokens
Outputs:
Writes a .txt file of top 7 words per topic for subsequent inspection.
"""
# load data
combined_df = pd.read_csv(pkg_resources.resource_filename(
resource_package, "data/data_processed.csv"),
index_col=0)
corpus = MmCorpus(
pkg_resources.resource_filename(resource_package,
"data/BoW_corpus.mm"))
print('Data loaded.')
# load the mallet model
ldamallet = gensim.models.wrappers.LdaMallet.load(
pkg_resources.resource_filename(
resource_package, 'model/working_ldamallet_model.gensim'))
print('Model loaded.')
# write out topics to a text file
topics = ldamallet.print_topics(num_topics=-1, num_words=7)
with open(os.path.join(output_path, 'LDA_topics.txt'), 'w') as topic_file:
for topic in topics:
topic_file.write(str(topic) + '\n')
print('Topics written to data folder.')
return (corpus, ldamallet, combined_df)
def setUp(self):
self.corpus = MmCorpus(datapath('testcorpus.mm'))
self.class_ = ldamodel.LdaModel
self.model = self.class_(common_corpus,
id2word=common_dictionary,
num_topics=2,
passes=100)
def load_models(args):
"""
Load tfidf model, corpus, and dictionary if specified in arguments.
input:
args (arparse object): input arguments
return loaded tfidf object, corpus, and dictionary if specified
"""
try:
tfidf = models.TfidfModel.load(os.path.join(args.tfidf_model_dir_path, "model"))
corpus = mm = MmCorpus(os.path.join(args.tfidf_model_dir_path, "corpus"))
mydict = corpora.Dictionary.load(os.path.join(args.tfidf_model_dir_path, "dictionary"))
except FileNotFoundError:
print(timestamp(), "Tf-idf model directory path must contain model, corpus, and dictionary.", file=sys.stderr)
exit(1)
return tfidf, corpus, mydict
def corpus_tfidf():
path = ""
corpus = MmCorpus(path + "corpus.mm")
id2word = Dictionary.load(path + 'corpus.mm.dict')
# TF-IDF the corpus
tfidf = models.TfidfModel(corpus)
corpus_tfidf = tfidf[corpus]
tfidf.save("5_topics_tfidf_only.model")
lda_model_tfidf = models.LdaModel(corpus_tfidf, num_topics=5, id2word=id2word)#models.LdaMulticore(corpus_tfidf, num_topics=5, id2word=id2word, passes=2, workers=4) # better model
print('\nPerplexity: ', lda_model_tfidf.log_perplexity(corpus)) # a measure of how good the model is. lower the better.
for idx, topic in lda_model_tfidf.print_topics(-1):
print('Topic: {} Word: {}'.format(idx, topic))
lda_model_tfidf.save(path + "5_topics_test.model")
lda_model_tfidf.wv.save(path + "5_topics_test_kv.model")
def exp_variable_selection(dict_name, corpus_name, N=2, n_noise_term=10, n_epoches=20, \
learning_rate=.001, batch_size=30, n_hidden=50):
"""
Main function for selecting variables and calculating embeddings for selected
embeddings vectors by using vanilla RBM.
"""
# load existing dictionary (or creat a new dictionary from scratch)
# code for creating new dictionary ...
ngram_dict = corpora.Dictionary.load(dict_name)
# select key ides of some random ngram terms from loaded dictionary as dictionary noise
random_terms = list(set(ngram_dict.keys()) - set(PRESERV_TERMS))
noise_terms = random.sample(random_terms, n_noise_term)
print("[%s] [Var Select] %d noise terms has been added: %s" % \
(arrow.now(), len(noise_terms), [ngram_dict[key] for key in noise_terms]), file=sys.stderr)
# # shrink dictionary to a subset in accordance with PRESERV_TERMS
# sub_ngram_dict = sub_dictionary(ngram_dict, PRESERV_TERMS, by_key=True)
# load existing corpus
corpus = MmCorpus(corpus_name)
dense_corpus = corpus2dense(corpus, num_terms=len(ngram_dict)).transpose()
print("[%s] [Var Select] raw corpus has been loaded with size (%d, %d)" % \
(arrow.now(), dense_corpus.shape[0], dense_corpus.shape[1]), file=sys.stderr)
# slice the corpus by PRESERV_TERMS and corpus
# (remove columns which are not included in PRESERV_TERMS)
# noted: indexing arrays could not be broadcast together
# e.g. dense_corpus[PRESERV_DOCS, PRESERV_TERMS]
corpus_slice = dense_corpus[:, PRESERV_TERMS + noise_terms]
corpus_slice = corpus_slice[PRESERV_DOCS, :]
print("[%s] [Var Select] corpus has been sliced with size (%d, %d)" % \
(arrow.now(), corpus_slice.shape[0], corpus_slice.shape[1]), file=sys.stderr)
# mat2img(np.log(corpus_slice))
rbm = GBRBM(n_visible=corpus_slice.shape[1], n_hidden=n_hidden, \
learning_rate=learning_rate, momentum=0.95, err_function='mse', \
use_tqdm=False, sample_visible=False, sigma=1.)
rbm.fit(corpus_slice, n_epoches=n_epoches, batch_size=batch_size, \
shuffle=True, verbose=True)
embeddings = rbm.transform(corpus_slice).round().astype(int)
# w, vbias, hbias = rbm.get_weights()
# mat2img(w)
return corpus_slice, embeddings
# -*- coding: utf-8 -*-
"""
Created on Thu Oct 10 18:21:00 2019
@author: evefl
"""
from pprint import pprint
from gensim.corpora.mmcorpus import MmCorpus
from gensim.corpora.dictionary import Dictionary
from gensim import models
# set path to wherever you download the files
path = '/data/'
corpus = MmCorpus("corpus.mm") #MmCorpus('%scorpus.mm' % path) # BOW
id2word = Dictionary.load('corpus.mm.dict') #'%scorpus.mm.dict' % path)
for doc in corpus[:1]:
for word in doc[:2000]:
print(word)
print(id2word[word[0]])
# TF-IDF the corpus
tfidf = models.TfidfModel(corpus)
corpus_tfidf = tfidf[corpus]
#
#for doc in corpus_tfidf: # preview tfidf scores for first document
# pprint(doc)
# break
for topic_id in range(num_topics):
# cal p(w) : p(w) = sumz(p(z)*p(w|z))
prob_topic = doc_topics_ist[i][topic_id][1]
prob_topic_word = topic_word_list[topic_id][word]
prob_word += prob_topic * prob_topic_word
prob_doc += math.log(prob_word) # p(d) = sum(log(p(w)))
prob_doc_sum += prob_doc
testset_word_num += doc_word_num
prep = math.exp(-prob_doc_sum /
testset_word_num) # perplexity = exp(-sum(p(d)/sum(Nd))
#print("the perplexity of this ldamodel is : %s" % prep)
return prep
topicnum_perplexity = []
corpus = MmCorpus('./ths_corpora.mm')
testset = []
import random
for i in random.sample(range(corpus.num_docs), corpus.num_docs // 100):
testset.append(corpus[i])
for topic_num in range(20, 60, 3):
# lda = models.LdaModel(dict_corpora, num_topics=topic_num, id2word=dict_1, iterations=1000)
# prep = perplexity(lda, testset, dict_1, len(dict_1.keys()), topic_num)
# print(topic_num, "success!!!!!!!!!!!!!!!!!!!", prep)
# topicnum_perplexity.append([topic_num, prep])
lda_tfidf = models.LdaModel(corpus_tfidf,
num_topics=topic_num,
id2word=dict_1,
iterations=1000)
def load(id):
tokenizer = Dictionary.load(BM25Engine.tokenizer_file.format(id=id))
corpus = MmCorpus(BM25Engine.corpus_file.format(id=id))
with open(BM25Engine.doc_idxs_file.format(id=id), "r") as f:
idxs2id = json.load(f)
return BM25Engine(tokenizer, corpus, idxs2id)
def setUp(self):
self.corpus = MmCorpus(datapath('testcorpus.mm'))
def setUp(self):
self.corpus_small = MmCorpus(datapath('test_corpus_small.mm'))
self.corpus_ok = MmCorpus(datapath('test_corpus_ok.mm'))
self.corpus_empty = []
corpusname = "brown"
corpus = [
preprocessor.preprocess(" ".join(text), return_bow=True)
for text in brown.sents()
]
preprocessor.dictionary.filter_extremes(15, 0.1, 30000)
corpus = [
preprocessor.preprocess(" ".join(text),
allow_update=False,
return_bow=True) for text in brown.sents()
]
ln.debug("saving/loading corpus")
save = MmCorpus.serialize("test.mm", corpus)
corpus = MmCorpus("test.mm")
dimensions = 2000
params = [{"num_layers": 5, "noise": 0.7}, {"num_layers": 3, "noise": 0.3}][0]
ln.info("training mSDA with %s dimensions. params: %s" % (dimensions, params))
model = mSDAWrapper.train(corpus, dimensions, dictionary, params)
paramstring = "_".join(["%s-%s" % (k, v) for k, v in params.items()])
savestring = "mSDA_%s_%s_" % (corpusname, paramstring)
model.save(savestring)
msda_wrapper = mSDAWrapper(savestring, preprocessor)
def get_synonyms(word):
return [synset.synonyms for synset in wordnet.synsets(word)]
def search(request):
if request.method == 'POST':
global catch
catch = request.POST['title']
data = [catch]
stop_words = stopwords.words('indonesian')
stop_words2 = stopwords.words('english')
stop_words.extend(stop_words2)
stop_words.extend([
'of', 'in', 'and', 'the', 'for', 'on', 'using', 'based', 'from',
'with', 'to', 'by', 'as', 'an', 'pengaruh', 'effect', 'analisis',
'at', 'pre', 'pro', 'analysis', 'berbasis', 'tahun', 'between',
'kualitas', 'method', 'metode', 'through', 'menggunakan', 'hasil'
])
# Remove Numbers
data = [re.sub(" \d+", ' ', sent) for sent in data]
data = [re.sub('[^a-zA-Z]', ' ', sent) for sent in data]
# Remove new line characters
data = [re.sub('\s+', ' ', sent) for sent in data]
# Remove distracting single quotes
data = [re.sub("\'", "", sent) for sent in data]
def sent_to_words(sentences):
for sentence in sentences:
yield (gensim.utils.simple_preprocess(str(sentence),
deacc=True)
) # deacc=True removes punctuations
coba = sent_to_words(data)
data_words = list(coba)
# 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)
# Define functions for stopwords, bigrams, trigrams and lemmatization
# from Sastrawi.Stemmer.StemmerFactory import StemmerFactory
def remove_stopwords(texts):
return [[
word for word in simple_preprocess(str(doc))
if word not in (stop_words or stop_words2)
] 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):
"""https://spacy.io/api/annotation"""
texts_out = []
for sent in texts:
doc = nlp(" ".join(sent))
texts_out.append([token.lemma_ for token in doc])
return texts_out
# Remove Stop Words
data_words_nostops = remove_stopwords(data_words)
# # Form Bigrams
data_words_bigrams = make_bigrams(data_words_nostops)
nlp = spacy.load('en_core_web_sm')
data_lemmatized = lemmatization(data_words_bigrams)
#stem masing-masing kata yang ada
factory = StemmerFactory()
stemmer = factory.create_stemmer()
for x in range(len(data_lemmatized) - 1):
for y in range(len(data_lemmatized[x]) - 1):
data_lemmatized[x][y] = stemmer.stem(data_lemmatized[x][y])
id2wordd = corpora.Dictionary(data_lemmatized)
# Create Corpus
texts = data_lemmatized
# Term Document Frequency
corpuss = [id2wordd.doc2bow(text) for text in texts]
id2word = Dictionary.load('papers/id2word_new.dict')
corpus = MmCorpus('papers/corpus_new.mm')
# import gensim
model = gensim.models.ldamodel.LdaModel.load(
'papers/mallet_18_lda.mdl', mmap='r')
new_doc_bow = id2word.doc2bow(data_lemmatized[0])
hasil = model.get_document_topics(new_doc_bow)
topic = 0
nilai = -99
for i, row in (hasil):
if (row > nilai):
topic = i
nilai = row
keywords = []
for i, nilai in model.show_topic(topic):
keywords.append(i)
# topics = Topics.objects.filter(id_topic=topic).values_list('id_publication', flat=True)
#load data
df = pd.read_csv('papers/label18baru.csv')
with open("papers/lemma_new.txt", "rb") as fp: #Pickling
data_lemmatizedd = pickle.load(fp)
#init tempat menyimpan hasil
hasil_cosine_keseluruhan = []
hasil_cosine = []
#mengambil data yang sesuai dengan topik
# topic=df
topik = df.loc[df['Topic1'] == topic]
##membuat data lemma, corpus dan dictionary berdasarkan data dalam 1 topik
res_list = [data_lemmatizedd[i] for i in topik.index]
# Create Dictionary
id2worddd = corpora.Dictionary(res_list)
# Create Corpus
texts = res_list
# Term Document Frequency
corpusss = [id2worddd.doc2bow(text) for text in res_list]
#menghitung cosine sim judul dibandingkan dengan keseluruhan judul yang ada
index_tmpfile = get_tmpfile("index")
index = Similarity(index_tmpfile,
corpusss,
num_features=len(id2worddd))
index = MatrixSimilarity(corpusss, num_features=len(id2worddd))
sims = index[corpuss]
sort_index = np.argsort(sims[0])
reversed_arr = sort_index[::-1]
hasil = pd.DataFrame(reversed_arr)
hasilbaru = hasil.iloc[:40, :]
hasilmantep = hasilbaru.to_numpy()
idfix = []
for i in range(0, 40):
idfix.append(hasilmantep[i][0])
ngetest = topik.to_numpy()
id_artikel = []
for i in idfix:
id_artikel.append(ngetest[i][9])
global user_list
user_list = Papers.objects.filter(
id_pub__in=id_artikel).order_by('id_pub')
topic_dict = {
'0': 'Kimia',
'1': 'Industri',
'2': 'Biologi-Tumbuhan',
'3': 'Biologi-Pangan',
'4': 'Mikrobiologi',
'5': 'Studi-Penemuan',
'6': 'Sosial-Masyarakat-Sejarah',
'7': 'Habitat Makhluk Hidup',
'8': 'Elektro-Mesin',
'9': 'Pendidikan',
'10': 'Sosial-Pengaruh',
'11': 'Pertanian',
'12': 'Data-Citra-Statistik',
'13': 'Jawa-Indonesia',
'14': 'Masyarakat',
'15': 'Biokimia',
'16': 'Kesehatan',
'17': 'Kesehatan 2',
}
global hasiltopik
hasiltopik = topic_dict.get(str(topic))
page = request.GET.get('page', 1)
paginator = Paginator(user_list, 10)
try:
users = paginator.page(page)
except PageNotAnInteger:
users = paginator.page(1)
except EmptyPage:
users = paginator.page(paginator.num_pages)
context = {
'title': 'Halaman Utama',
'topic': hasiltopik,
'catch': catch,
'users': users,
}
return render(request, 'papers/index.html', context)
else:
page = request.GET.get('page', 1)
paginator = Paginator(user_list, 10)
try:
users = paginator.page(page)
except PageNotAnInteger:
users = paginator.page(1)
except EmptyPage:
users = paginator.page(paginator.num_pages)
context = {
'title': 'Halaman Utama',
'topic': hasiltopik,
'catch': catch,
'users': users,
}
return render(request, 'papers/index.html', context)
def rekomendasi(input):
data = [input]
id2word = Dictionary.load('pdupt_website/id2word_new.dict')
corpus = MmCorpus('pdupt_website/corpus_new.mm')
df = pd.read_csv('pdupt_website/reduksifix.csv')
with open("pdupt_website/lemma_new.txt", "rb") as fp: #Pickling
data_lemmatized = pickle.load(fp)
stop_words = stopwords.words('indonesian')
stop_words2 = stopwords.words('english')
stop_words.extend(stop_words2)
stop_words.extend([
'of', 'in', 'and', 'the', 'for', 'on', 'using', 'based', 'from',
'with', 'to', 'by', 'as', 'an', 'pengaruh', 'effect', 'analisis', 'at',
'pre', 'pro', 'analysis', 'berbasis', 'tahun', 'between', 'kualitas',
'method', 'metode', 'through', 'menggunakan', 'hasil'
])
# Remove Numbers
data = [re.sub(" \d+", ' ', sent) for sent in data]
data = [re.sub('[^a-zA-Z]', ' ', sent) for sent in data]
# Remove new line characters
data = [re.sub('\s+', ' ', sent) for sent in data]
# Remove distracting single quotes
data = [re.sub("\'", "", sent) for sent in data]
def sent_to_words(sentences):
for sentence in sentences:
yield (gensim.utils.simple_preprocess(str(sentence), deacc=True)
) # deacc=True removes punctuations
data = sent_to_words(data)
data_words = list(data)
# 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)
# Define functions for stopwords, bigrams, trigrams and lemmatization
# from Sastrawi.Stemmer.StemmerFactory import StemmerFactory
def remove_stopwords(texts):
return [[
word for word in simple_preprocess(str(doc))
if word not in (stop_words or stop_words2)
] 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):
"""https://spacy.io/api/annotation"""
texts_out = []
for sent in texts:
doc = nlp(" ".join(sent))
texts_out.append([token.lemma_ for token in doc])
return texts_out
# Remove Stop Words
data_words_nostops = remove_stopwords(data_words)
# # Form Bigrams
data_words_bigrams = make_bigrams(data_words_nostops)
nlp = spacy.load('en_core_web_sm')
data_lemmatized_search = lemmatization(data_words_bigrams)
#stem masing-masing kata yang ada
factory = StemmerFactory()
stemmer = factory.create_stemmer()
for x in range(len(data_lemmatized_search) - 1):
for y in range(len(data_lemmatized_search[x]) - 1):
data_lemmatized_search[x][y] = stemmer.stem(
data_lemmatized_search[x][y])
# import gensim
model = gensim.models.ldamodel.LdaModel.load(
'pdupt_website/mallet_18_lda.mdl', mmap='r')
new_doc_bow = id2word.doc2bow(data_lemmatized_search[0])
hasil = model.get_document_topics(new_doc_bow)
topic = 0
nilai = -99
for i, row in (hasil):
if (row > nilai):
topic = i
nilai = row
df_topik = df.loc[df['Topic1'] == topic]
df_topik = df_topik.astype({"id_judul": int})
df_topik = df_topik.reset_index(drop=True)
##membuat data lemma, corpus dan dictionary berdasarkan data dalam 1 topik
res_list = [data_lemmatized[int(i) - 1] for i in df_topik.id_judul]
# Create Dictionary
id2word_topik = corpora.Dictionary(res_list)
# Create Corpus
texts = res_list
# Term Document Frequency
corpus_topik = [id2word_topik.doc2bow(text) for text in res_list]
#membuat indexing untuk perhitungan cossim
index_tmpfile = get_tmpfile("index")
index = Similarity(index_tmpfile,
corpus_topik,
num_features=len(id2word_topik))
#query diambil dari term document berdasarkan corpus per topik dari data lemma hasil search
query = id2word_topik.doc2bow(data_lemmatized_search[0])
similarities = index[query]
sort_index = np.argsort(similarities)
sort_index
reversed_arr = sort_index[::-1]
reversed_arr
list_idx = reversed_arr[:10]
list_id_artikel = list(df_topik[df_topik.index.isin(list_idx)].id_judul)
return (list_id_artikel, topic + 1)
self.titles = []
for title, tokens in itertools.islice(iter_wiki(self.dump_file), self.clip_docs):
self.titles.append(title)
yield self.dictionary.doc2bow(tokens)
def __len__(self):
return self.clip_docs
# create a stream of bag-of-words vectors
wiki_corpus = WikiCorpus(fileLocation+'enwiki-latest-pages-articles.xml.bz2', id2word_wiki)
vector = next(iter(wiki_corpus))
print(vector) # print the first vector in the stream
MmCorpus.serialize(fileLocation+'wikiModels/wiki_bow.mm', wiki_corpus)
mm_corpus = MmCorpus(fileLocation+'wikiModels/wiki_bow.mm')
print(mm_corpus)
clipped_corpus = gensim.utils.ClippedCorpus(mm_corpus, 4000)
lda_model = gensim.models.LdaModel(clipped_corpus, num_topics=10, id2word=id2word_wiki, passes=4)
# store all trained models to disk
lda_model.save(fileLocation+'wikiModels/lda_wiki.model')
#lsi_model.save('./data/lsi_wiki.model')
#tfidf_model.save('./data/tfidf_wiki.model')
id2word_wiki.save(fileLocation+'wikiModels/wiki.dictionary')
loaded_lda_model = gensim.models.LdaModel.load(fileLocation+'wikiModels/lda_wiki.model')
# select top 50 words for each of the 20 LDA topics
top_words = [[word for _, word in loaded_lda_model.show_topic(topicno, topn=50)] for topicno in range(lda_model.num_topics)]
def __init__(self, docs, topic_number=500):
# Create a dictionary representation of the documents.
print('training LSI models with topic number = ' + str(topic_number))
if (not os.path.isfile('./lsi/lsi_dict.dict')):
print('creating dict')
dictionary = Dictionary(docs)
dictionary.save('./lsi/lsi_dict.dict')
else:
print('dict already exists')
dictionary = Dictionary.load("./lsi/lsi_dict.dict")
self.dictionary = dictionary
# Create corpora
if (not os.path.isfile('./lsi/lsi_corpus.mm')):
# Filter out words that occur less than 20 documents, or more than 50% of the documents.
print('creating bow corpus')
dictionary.filter_extremes(no_below=20, no_above=0.5)
corpus = [dictionary.doc2bow(doc) for doc in docs]
MmCorpus.serialize("lsi/lsi_corpus.mm", corpus)
else:
print('bow corpus already exists')
corpus = MmCorpus("./lsi/lsi_corpus.mm")
self.tfidf = models.TfidfModel(corpus)
if (not os.path.isfile('./lsi/lsi_tf_corpus.mm')):
print('creating tf corpus')
tf_corp = self.tfidf[corpus]
MmCorpus.serialize("lsi/lsi_tf_corpus.mm", tf_corp)
else:
print('tf corpus already exists')
tf_corp = MmCorpus("./lsi/lsi_tf_corpus.mm")
# Make a index to word dictionary.
temp = dictionary[0] # This is only to "load" the dictionary.
id2word = dictionary.id2token
#Create the models and vectors
if (not os.path.isfile('./lsi/lsi_bow_model' + str(topic_number) +
'.model')):
print('creating bow model')
bow_model = models.LsiModel(corpus=corpus,
num_topics=topic_number,
id2word=id2word)
bow_model.save('lsi/lsi_bow_model' + str(topic_number) + '.model')
else:
print('bow model already exists')
bow_model = models.LsiModel.load('./lsi/lsi_bow_model' +
str(topic_number) + '.model')
bow_vector = bow_model[corpus]
self.bow_model = bow_model
if (not os.path.isfile('./lsi/lsi_tf_model' + str(topic_number) +
'.model')):
print('creating tfidf model')
tf_model = models.LsiModel(corpus=tf_corp,
num_topics=topic_number,
id2word=id2word)
tf_model.save('./lsi/lsi_tf_model' + str(topic_number) + '.model')
else:
print('tfidf model already exists')
tf_model = models.LsiModel.load('./lsi/lsi_tf_model' +
str(topic_number) + '.model')
tf_vector = tf_model[tf_corp]
self.tf_model = tf_model
#Create indices
if (not os.path.isfile('./lsi/lsi_bow_model' + str(topic_number) +
'.index')):
print('creating bow index')
bow_index = similarities.MatrixSimilarity(
bow_vector) # index corpus in bow LSI space
bow_index.save('lsi/lsi_bow_model' + str(topic_number) + '.index')
else:
print('bow index already exists')
bow_index = similarities.MatrixSimilarity.load(
'./lsi/lsi_bow_model' + str(topic_number) + '.index')
self.bow_index = bow_index
if (not os.path.isfile('./lsi/lsi_tf_model' + str(topic_number) +
'.index')):
print('creating tf index')
tf_index = similarities.MatrixSimilarity(
tf_vector) # index corpus in tf LSI space
tf_index.save('lsi/lsi_tf_model' + str(topic_number) + '.index')
else:
print('tf index already exists')
tf_index = similarities.MatrixSimilarity.load(
'./lsi/lsi_tf_model' + str(topic_number) + '.index')
self.tf_index = tf_index
print('model created!')
# optional argv[3] = keep_words
if len(sys.argv) < 3:
print globals()['__doc__'] % locals()
#sys.exit(1)
input, output = sys.argv[1:3]
if len(sys.argv) > 3:
keep_words = int(sys.argv[3])
else:
keep_words = DEFAULT_DICT_SIZE
# build dictionary. only keep 100k most frequent words (out of total ~900k unique tokens)
enron = EnronCorpus(input, keep_words=keep_words)
# save dictionary and bag-of-words (term-document frequency matrix)
enron.dictionary.save_as_text(output + '_wordids.txt')
MmCorpus.serialize(output + '_bow.mm', enron, progress_cnt=10000)
del enron
# initialize corpus reader and word->id mapping
id2token = Dictionary.load_from_text(output + '_wordids.txt')
mm = MmCorpus(output + '_bow.mm')
# build tfidf
from gensim.models import TfidfModel
tfidf = TfidfModel(mm, id2word=id2token, normalize=True)
# save tfidf vectors in matrix market format
MmCorpus.serialize(output + '_tfidf.mm', tfidf[mm], progress_cnt=10000)
logger.info("finished running %s" % program)
def setUp(self):
self.corpus = MmCorpus(datapath('testcorpus.mm'))
self.model = lsimodel.LsiModel(self.corpus, num_topics=2)
mean_jaccard.append(np.mean(jacc_np))
mean_bleu.append(np.mean(bleu_np))
mean_cos.append(np.mean(cos_np))
mean_fscore.append(np.mean(fscore_np))
return np.max(np.asarray(mean_bleu)), np.max(
np.asarray(mean_jaccard)), np.max(np.asarray(mean_cos)), np.max(
np.asarray(mean_fscore))
GH_IDs, SO_IDs, GH_annotation_intersect, GH_annotation_union, SO_annotation_intersect, SO_annotation_union = load_annotations(
)
path = "/home/norberteke/PycharmProjects/Thesis/data/"
dictionary = Dictionary.load(path + 'GH_full_processed_Dictionary.dict')
corpus = MmCorpus(datapath(path + 'corpus_processed_GH_full.mm'))
texts = []
with open(path + 'GH_full_processed_corpus.csv', 'r') as f:
reader = csv.reader(f)
texts = list(reader)
terms = []
for (key, value) in dictionary.iteritems():
terms.append(value)
def write_results_to_file(path, lda_model, max_bleu, max_jaccard, max_cos,
max_fscore):
with open(path, 'a') as f:
writer = csv.writer(f,
async def load_corpus():
if 'corpus' not in model:
model['corpus'] = MmCorpus(await tasks['corpus'])
return model['corpus']
