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Semantic Analysis of Movie Reviews for Rating Prediction

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Presentation on theme: "Semantic Analysis of Movie Reviews for Rating Prediction"— Presentation transcript:

1 Semantic Analysis of Movie Reviews for Rating Prediction
CS 224N Laureen Lam

2 Project Overview Problem Description Applications
Related Work: Thumbs up? Sentiment classification using machine learning techniques, by Pang & Lee Solution Steps: Data Classifier Training / Testing with Features Results Future Work

3 Solution Steps Data: Polarity Dataset v2.0 (+ / - sentiment ratings) Scaled Dataset v1.0 (0-, 1-, 2-star ratings) Classifier: Modified MaxEnt Training / Testing: 80 / 20 split of datasets

4 Polarity Dataset Results

5 Polarity Dataset Results

6 Scaled Dataset Results

7 Scaled Dataset Results

8 Comparison to Pang & Lee

9 Future Work Combine MaxEnt with other classifiers Decision Trees SVM
Layer classifiers Spread feature sets among MaxEnt classifiers (serial or parallel pipeline) Use top-level classifier to combine results

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