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Машинное обучение с PyTorch и Scikit-Learn
book

Машинное обучение с PyTorch и Scikit-Learn

by Sebastian Raschka, Yuxi (Hayden) Liu, Vahid Mirjalili
May 2024
Beginner to intermediate
688 pages
26h
Russian
Foliant
Content preview from Машинное обучение с PyTorch и Scikit-Learn
Применение машинного обучения для смыслового анализа текста
265
>>> vect = HashingVectorizer(decode_error='ignore',
... n_features=2**21,
... preprocessor=None,
... tokenizer=tokenizer)
>>> clf = SGDClassifier(loss='log', random_state=1)
>>> doc_stream = stream_docs(path='movie_data.csv')
Выполнив приведенный код, мы инициализировали
HashingVectorizer
с помощью функ-
ции
tokenizer
и установили количество признаков равным
2**21
. Кроме того, мы по-
вторно инициализировали классификатор логистической регрессии, установив для па-
раметра потерь
SGDClassifier
значение
'log'
. Заметьте, что, выбирая большое количество
признаков в
Has
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Publisher Resources

ISBN: 9786011100342