['pos/cv000_29590.txt', 'pos/cv001_18431.txt', 'pos/cv002_15918.txt',
    'pos/cv003_11664.txt', 'pos/cv004_11636.txt', 'pos/cv005_29443.txt',
    'pos/cv006_15448.txt', 'pos/cv007_4968.txt', 'pos/cv008_29435.txt',
    'pos/cv009_29592.txt']
['neg/cv000_29416.txt', 'neg/cv001_19502.txt', 'neg/cv002_17424.txt',
    'neg/cv003_12683.txt', 'neg/cv004_12641.txt', 'neg/cv005_29357.txt',
    'neg/cv006_17022.txt', 'neg/cv007_4992.txt', 'neg/cv008_29326.txt',
    'neg/cv009_29417.txt']
Классификация с использованием корпуса обзоров фильмов в NLTK/Python