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Designed pipeline to tokenize, remove stop-words, and lemmatize about 500,000 samples of Amazon Music review text data using RegEx and NLTK library, before feeding the training portion into TF-IDF;
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Developed an XGBoost Regressor and a Multilayer Perceptron using Scikit-learn by fitting the sparse data which came with unbalanced class distribution. Tuned model performance using adaptive learning rate and ReLU activation function to predict review scores (1-5) produced by users in the test set;
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Achieved best resulting MSE around 0.46, putting the team in the top 20% of the in-class Kaggle competition.
amazon-music-review-rating-prediction-course-group-project's Introduction
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