CountVectorizer: “I” not showing up in vectorized text

Question

I\'m new to scikit-learn, and currently studying Naïve Bayes (Multinomial). Right now, I\'m working on vectorizing text from sklearn.feature_extraction.text, and for some reason

Answer 1

This is because capital letter detection is by default turned off lowercase=True in CountVectorizer

Use

vectorizer_train = CountVectorizer(min_df=0, lowercase=False)