What is the purpose of cross-validation in machine learning?
Practice Questions
Q1
What is the purpose of cross-validation in machine learning?
To increase the size of the training dataset
To assess how the results of a statistical analysis will generalize to an independent dataset
To reduce the complexity of the model
To improve the speed of training
Questions & Step-by-Step Solutions
What is the purpose of cross-validation in machine learning?
Correct Answer: Cross-validation helps in evaluating the performance of a machine learning model.
Step 1: Understand that in machine learning, we create models to make predictions based on data.
Step 2: Realize that we need to check if our model works well not just on the data it was trained on, but also on new, unseen data.
Step 3: Learn that cross-validation is a technique used to test how well our model performs on different sets of data.
Step 4: Know that in cross-validation, we split our data into two parts: one part for training the model and another part for testing it.
Step 5: Understand that by doing this multiple times with different splits, we can get a better idea of how well our model will perform in real-world situations.
