After constructing the classifiers for each product category,
we used the resulting classification models in the remaining,
unseen reviews. Instead of classifying each review as subjective
or objective, we instead classified each sentence in each review
as either “objective” or “subjective,” keeping the probability
being subjective Pr subj(s) for each sentence s. Hence, for each
review, we have a “subjectivity” score for each of the sentences