GO Classes DPP | ML |VALIDATION

Answer 1

The training set is used to fit our model. After that, the validation set is used to select the best model. Then, the test set is used for computing the generalization error.

$\therefore$ Option C is correct.

Answer 2

Option C

The Role of Each Dataset 🧠

Think of it like preparing for a final exam:

• Training Set: This is the largest part of your data. The model uses it to learn the patterns, just like you use textbooks and class notes to study. This is what's used to "fit the model."

  • Sentence part 1: "The Training set is used to fit the model..."

• Validation Set: After studying, you might take a few practice exams. You use your performance on these to adjust your study habits (e.g., focus more on a certain topic). A model does the same thing. It's trained on the training set, and then its performance is checked on the validation set. This helps you tune the model's hyperparameters (like its complexity) and select the best-performing version.

  • Sentence part 2: "...the Validation set is used for model selection..."

• Test Set: This is like the final exam. You only take it once. It contains data the model has never seen before. Its performance on this set gives a final, unbiased measure of how well it will perform in the real world. This is called the generalization error.

  • Sentence part 3: "...the Test set is used for computing the generalisation error."

Putting it all together, the correctly filled sentence is:

"The Training set is used to fit the model; the Validation set is used for model selection; the Test set is used for computing the generalisation error."

This matches option C.