Knowledge Leakage: What It Is and Why It Causes Our Predictive Techniques to Fail | by Andrea D’Agostino | Aug, 2023

Knowledge leakage represents, along with over/underfitting, the principle reason for failure of machine studying initiatives that go into manufacturing

Picture by Grianghraf on Unsplash

Knowledge leakage is undoubtedly a risk that preys on information scientists, whatever the stage of seniority.

It’s that phenomenon that may have an effect on everybody — even professionals with years of expertise within the sector.

Along with over/underfitting, it represents the principle reason for failure of machine studying initiatives that go into manufacturing.

Knowledge leakage happens when info current within the coaching set leaks into the analysis set (whether or not validation or take a look at set)

However why does information leakage declare so many victims?

As a result of even after many experiments and evaluations within the growth section, our fashions can fail spectacularly in a manufacturing situation.

Avoiding information leakage shouldn’t be straightforward. I hope that with this text you’ll perceive why and easy methods to keep away from it in your initiatives!

Right here’s an instance that may be helpful so that you can perceive what information leakage is.

Think about that we’re builders of utilized AI and we’re employed by an organization that manufactures kids’s toys in collection.

Our process is to create a machine studying mannequin to establish if a toy might be topic to a refund request inside 3 days of its sale.

We obtain the information from the manufacturing unit, within the type of photos capturing the toy earlier than canning.

Picture by Jerry Wang on Unsplash

We use these photos to coach our mannequin which performs very properly in cross validation and on the take a look at set.

We ship the mannequin and for the primary month the shopper stories solely 5% faulty toy refund requests.

Within the second month we put together for the retraining of the mannequin. The manufacturing unit sends us extra images, which we use to…

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