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You have been given access to a large movie rating dataset containing about 5M records with fields like Movie Name, Average Movie Rating, Genre, Number of Reviewers, Date of Release and few other numeric columns. You plan to build a Data mining model that predicts the average review based on the other columns. Which is the best approach you would adopt to build the model.
A. Use the entire dataset to build a regression model to predict the average movie rating by regressing against the remaining columns dropping features that don't aid in improving the predictive accuracy
B. None of the above
C. Drop the movie titles and Genres because they are unstructured data and only use the numeric columns to build a regression model using the rest of the entire data set.
D. Randomly sample a few 1000's of records and explore whether you can predict the rating with reasonable accuracy dropping features that don't aid in improving the predictive accuracy
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