Yanzhen LeiPremium services on concerts discountQuestion: Streaming Services are interesting in launching premium services for getting discounts for concerts in streaming media? How do…Dec 9, 2021Dec 9, 2021
Yanzhen LeiData science interview question-part2Background: Another interview with data scientist role. 45minutes for hand-writing Kmeans; 30 minutes with domain knowledgeDec 4, 2021Dec 4, 2021
Yanzhen LeiNew Interview QuestionsBackground: Consulting company in Data Analytics roleNov 9, 2021Nov 9, 2021
Yanzhen LeiLR Prepossessing & ResamplingSituation: When I did an interview for a data scientist role, I was asked about methodology before. However, I was not familiar with those…Oct 19, 2021Oct 19, 2021
Yanzhen LeiSVMLinear SVMs and logistic regression generally perform comparably in practice. Use SVM with a nonlinear kernel if you have reason to believe…Oct 11, 2021Oct 11, 2021
Yanzhen LeiBootstrapping and cross-validationBootstrapping helps generalizationSep 28, 2021Sep 28, 2021