Question: You are applying for a position at AWS and your interviewer wants to know more about your sentiment classification skills on products sold by amazon.com

You are applying for a position at AWS and your interviewer wants to know more about your sentiment classification skills on products sold by amazon.com

All reviews are classified by a labeling subcontractor (e.g. AWS Mechanical Turk) as having positive ( = 1) or negative ( = 0) sentiment. The interviewer asks you to explain all the steps of designing a sentiment classifier based on Logistic Regression.

Feature Engineering - In this step you outline the following as potential features

1. 1 the number of counts of positive words

2. 2 the number of counts of negative words

Write the posterior probability expressions:

( = 1|x)

( = 0|x)

for the problem you are given to solve.

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