|
About the Data Science Interview Questions category
|
|
0
|
898
|
January 4, 2023
|
|
What is Levenshtein distance and how is it useful?
|
|
0
|
1542
|
February 13, 2023
|
|
What is pruning in a decision tree algorithm?
|
|
0
|
771
|
January 9, 2023
|
|
What is the ROC curve?
|
|
0
|
695
|
January 9, 2023
|
|
What do you understand about true positive rate and false-positive rate?
|
|
0
|
794
|
January 9, 2023
|
|
How can you calculate accuracy using a confusion matrix?
|
|
0
|
783
|
January 9, 2023
|
|
What are recommender systems?
|
|
0
|
741
|
January 9, 2023
|
|
Differentiate between univariate, bivariate, and multivariate analysis
|
|
0
|
930
|
January 9, 2023
|
|
What is the difference among UNION, MINUS and INTERSECT in SQL?
|
|
0
|
758
|
January 9, 2023
|
|
What is the difference between INNER JOIN, OUTER JOIN, FULL OUTER JOIN?
|
|
0
|
932
|
January 9, 2023
|
|
What are the difference between Clustered and a Non-clustered index?
|
|
0
|
796
|
January 9, 2023
|
|
What is the difference between Data Definition Language (DDL) and Data Manipulation Language (DML)?
|
|
0
|
887
|
January 9, 2023
|
|
What is correlation and covariance in statistics?
|
|
0
|
869
|
January 9, 2023
|
|
What is Entropy and Information Gain in decision tree algorithm?
|
|
0
|
833
|
January 9, 2023
|
|
What is the difference between Type I Error & Type II Error?
|
|
0
|
769
|
January 9, 2023
|
|
Can you explain the concept of bias-variance tradeoff in machine learning and the importance of considering it?
|
|
0
|
842
|
January 9, 2023
|
|
What are some strategies for dealing with missing data, and which imputation methods do you suggest using?
|
|
0
|
888
|
January 9, 2023
|
|
Can dimensionality reduction improve the performance of an SVM, and if so, under what circumstances?
|
|
0
|
744
|
January 9, 2023
|
|
What are some methods for evaluating the goodness of fit of a regression model?
|
|
0
|
839
|
January 9, 2023
|
|
Why is mean square error a bad measure of model performance? What would you suggest instead?
|
|
0
|
751
|
January 9, 2023
|
|
What is principal component analysis? Explain the sort of problems you would use PCA for
|
|
0
|
668
|
January 9, 2023
|
|
When would you use random forests Vs SVM and why?
|
|
0
|
910
|
January 9, 2023
|
|
Explain what precision and recall are
|
|
0
|
845
|
January 9, 2023
|
|
What is a model ensembling?
|
|
0
|
716
|
January 6, 2023
|
|
What is a hyperparameter tuning?
|
|
0
|
720
|
January 6, 2023
|
|
What is the difference between batch and online learning?
|
|
0
|
883
|
January 6, 2023
|
|
What is a support vector machine (SVM)?
|
|
0
|
805
|
January 6, 2023
|
|
What is the curse of dimensionality?
|
|
0
|
802
|
January 6, 2023
|
|
State and describe the different types of SQL joins
|
|
0
|
788
|
January 5, 2023
|
|
What is the difference between UNION and UNION ALL?
|
|
0
|
818
|
January 5, 2023
|