40 Algorithms Every Programmer Should Know

Case study: movie review sentiment analysis

Let's use NLP to conduct a movie review sentiment analysis. For this, we will use some open source movie review data available at http://www.cs.cornell.edu/people/pabo/movie-review-data/:

1. First, we will import the dataset that contains the movie reviews:

import numpy as npimport pandas as pd

2. Now, let us load the movies' data and print the first few rows to observe its structure.

df=pd.read_csv("moviereviews.tsv",sep='\t')df.head()

Note that the dataset has 2000 movie reviews. Out of these, half are negative and half are positive.

3. Now, let's start preparing the dataset for training the model. ...