Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is cross-validation?
💡 Hint: Think about why we need to evaluate models differently.
Question 2
Easy
Describe K-Fold cross-validation.
💡 Hint: How many times are we training with K-Fold?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary purpose of cross-validation?
- To prevent overfitting
- To increase model complexity
- To train faster
💡 Hint: Consider why we need to estimate model performance better.
Question 2
True or False: Leave-One-Out cross-validation is always preferable to K-Fold cross-validation.
- True
- False
💡 Hint: Consider the trade-offs of computation vs. training accuracy.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a dataset of 10,000 samples with an imbalanced class distribution of 90% to 10%, how would you set up a stratified K-Fold cross-validation?
💡 Hint: Think about the ratio of classes in each fold.
Question 2
Analyze the potential impact of using plain K-Fold cross-validation versus stratified K-Fold on a highly imbalanced dataset.
💡 Hint: Consider how the class ratios affect predictive modeling.
Challenge and get performance evaluation