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Question 1

Why do we need to be concerned with data handling?

Answer 1

Before starting to train a model, we need to get the data into a form which is compatible with the training and testing

Question 2

Why do we train and test in batches?

Answer 2

Training all the full dataset all at once as this would take too long.

Question 3

What is the main aim of building models (in classification or regression)?

Answer 3

To make predictions on unseen data.

This is known as generalisation.