def __init__(self, prefix):
"""
prefix is the prefix path to tfidf, lda and esa model.
"""
logger.info("Load dictionary, tfidf model, lda model and cosine esa model with prefix %s"
% prefix)
self.dictionary = corpora.Dictionary.load(prefix + "_wordids.dict")
self.tfidf_model = models.TfidfModel.load(prefix + "_tfidf.model")
self.cesa_model = CosineEsaModel.load(prefix + "_cesa.model")
def test_constructor_with_file_wikicorpus(self):
#load tf-idf model
tfidf_model = tfidfmodel.TfidfModel.load("/media/sdc1/test_dump/result/test_tfidf.model")
extractor = TfidfFeatureExtractor("/media/sdc1/test_dump/result/test")
#load tf-idf corpus
tfidf_corpus = MmCorpus('/media/sdc1/test_dump/result/test_tfidf_corpus.mm')
#load lda corpus
#lda_corpus = MmCorpus('/media/sdc1/test_dump/result/test_lda_corpus.mm')
#load dictionary
id2token = Dictionary.load("/media/sdc1/test_dump/result/test_wordids.dict")
#load article titles
document_titles = DocumentTitles.load("/media/sdc1/test_dump/result/test_articles.txt")
#Connect to mongo database
connect(self.config_['database']['db-name'],
username= self.config_['database']['user'],
password= self.config_['database']['passwd'],
port = self.config_['database']['port'])
#Load articles as test corpus
user = User.objects(email=u"*****@*****.**").first()
ranked_article_ids = (a.article.id
for a
in RankedArticle.objects(user_id = user.id).only("article"))
all_article_ids = Set(a.id
for a
in Article.objects(id__in = ranked_article_ids).only("id"))
read_article_ids = Set(a.article.id
for a
in ReadArticleFeedback.objects(user_id = user.id).only("article"))
unread_article_ids = all_article_ids - read_article_ids
#sample test articles
X, y = get_samples(extractor, read_article_ids, unread_article_ids)
s,f = X.shape
logger.debug("Traning with %d samples, %d features, %d marks" %
(s,f, len(y)))
#train esa model
esa_model = CosineEsaModel(tfidf_corpus,
document_titles = document_titles,
test_corpus = X,
test_corpus_targets = y,
num_test_corpus = len(y),
num_best_features = 15,
num_features = len(id2token))
print esa_model
esa_model.save('/media/sdc1/test_dump/result/test_cesa.model')
tmp_esa = CosineEsaModel.load('/media/sdc1/test_dump/result/test_cesa.model')
print tmp_esa