Une implémentation LDA très simple utilisant le gensin. Vous pouvez trouver plus d'informations ici: https://radimrehurek.com/gensim/tutorial.html
J'espère que cela peut vous aider à
from nltk.corpus import stopwords
from nltk.tokenize import RegexpTokenizer
from nltk.stem import RSLPStemmer
from gensim import corpora, models
import gensim
st = RSLPStemmer()
texts = []
doc1 = "Veganism is both the practice of abstaining from the use of animal products, particularly in diet, and an associated philosophy that rejects the commodity status of animals"
doc2 = "A follower of either the diet or the philosophy is known as a vegan."
doc3 = "Distinctions are sometimes made between several categories of veganism."
doc4 = "Dietary vegans refrain from ingesting animal products. This means avoiding not only meat but also egg and dairy products and other animal-derived foodstuffs."
doc5 = "Some dietary vegans choose to wear clothing that includes animal products (for example, leather or wool)."
docs = [doc1, doc2, doc3, doc4, doc5]
for i in docs:
tokens = word_tokenize(i.lower())
stopped_tokens = [w for w in tokens if not w in stopwords.words('english')]
stemmed_tokens = [st.stem(i) for i in stopped_tokens]
texts.append(stemmed_tokens)
dictionary = corpora.Dictionary(texts)
corpus = [dictionary.doc2bow(text) for text in texts]
# generate LDA model using gensim
ldamodel = gensim.models.ldamodel.LdaModel(corpus, num_topics=2, id2word = dictionary, passes=20)
print(ldamodel.print_topics(num_topics=2, num_words=4))
[(0, * u'0.066 animal + 0,065 *, + 0,047 * produit + 0,028 * philosophie '), (1, u'0.085 *. + 0.047 * produit + 0.028 * dietary + 0.028 * veg ')]
Il existe plusieurs packages Python pour la modélisation de thèmes répertoriés sur https://www.cs.princeton.edu/~blei /topicmodeling.html. –
En C++, [il y a ctr] (https://github.com/Blei-Lab/ctr). – kamalbanga
Le référentiel dans le lien de kamalbanga ci-dessus utilise le premier papier que vous avez mentionné. Bien qu'il soit écrit en C++, vous pouvez [l'appeler depuis python] (http://stackoverflow.com/questions/145270/calling-c-c-from-python). – jtitusj