successfully cheating using sentiwordnet our first estimator putting everything together summary regression recommendations regression recommendations improved classification iii music genre classification predicting house prices with regression multidimensional regression cross-validation for regression penalized regression and penalties using lasso or elastic nets in scikit-learn greater than scenarios an example based on text setting hyperparameters in smart way rating prediction and recommendations summary improved recommendations using the binary matrix of recommendations looking at the movie neighbors combining multiple methods basket analysis obtaining useful predictions analyzing supermarket shopping baskets association rule mining more advanced basket analysis summary sketching our roadmap fetching the music data converting into wave format looking at music decomposing music into sine wave components using fft to build our first classifier increasing experimentation agility training the classifier using the confusion matrix to measure accuracy in multiclass problems an alternate way to measure classifier performance using receiver operator characteristic (rociv