how do you measure your model performance
Sr Data Scientist Interview Questions
3,496 sr data scientist interview questions shared by candidates
What is the difference between SVM and Random Forest?
Q: If there are 10 million variables, how can you reduce the dimensions?
how would you go about imputing data
A project you worked on, feature selection, over-fitting of the model. What do you do when the features are correlated. What is the main difference between the F1 score and ROC-AUC? How do you decide between different models? What does MLE correspond to in Logistic Regression?
Why do you want to join Optum?
Showed Python code and asked to explain what it did, or correct errors
Answer the boy-girl problem.
Describe one common problem when training deep neural networks.
Coding : Pandas grouping function, List operations SQl : Find sales progression year on year using SQl and pandas Kmeans clustering working , imbalanced data set, loss function, Random forest pruning, Hyperparameter tuning, OOPs concept, python List and set , DBSCAN hyperparameter.
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