I'm Nuo Lei (/nuə/ /leɪ/), a current Data Science graduate student at NYU Center for Data Science. Looking forward to doing interesting things with data science skills!
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- Movie recommender with online demo: Basic model but fun application! Use
KNNto complete rating matrix and useK-meansclustering movies to three genres. Finally recommend movies in the same genre based on like-minded people's ratings.
- Movie recommender with online demo: Basic model but fun application! Use
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- Loan default prediction on Kaggle notebook: Predict loan default on imbalanced dataset by
SMOTEupsampling andLogistic regression,SVM,Random forest,LightGBM,XGBoost, achieving a best recall rate of 89%.
- Loan default prediction on Kaggle notebook: Predict loan default on imbalanced dataset by
- Common ML mistake — Is it really numerical data?
- SQL join & where, which runs first?
- SQL Techniques: How to Deal with Date & Time?
- SQL Techniques: How to Calculate Median & Mode?
- SQL Techniques: How to Select from Snapshot Date?
- SQL Techniques: How to Do Permutations & Combination?
- SQL Techniques: How to Impute NULL with Only the First Row?
- SQL Techniques: How to Do Rolling Average?
- SQL Techniques: How to Do Calculations in One Column?
- SQL Techniques: How to Use Multiple Where in One Column?
