Transfer Learning

3 min
Audience
ages 10–15
Duration
30 to 40 min
Adventure
5/8
Badge to earn
Transfer Pilot

Today's mission

Plan freezing, a new head and cautious unfreezing to adapt a pretrained model.

Proof of success: explain "Transfer learning", complete "Freeze or Fine-Tune" and name the limit of the analogy.

The story

Salomé's club wants to recognize three shapes of drawn leaves with only 90 examples. Training a large CNN from scratch would be fragile. The group starts from a model learned on a large allowed dataset, replaces its last layer and first freezes the extractor. After a baseline, it unfreezes a few layers with a small learning rate. Transfer reuses representations, but it also carries the limits and biases of the source.

Preview — the rest of the lesson is for enrolled readers.

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This lesson is part of the “Language” module

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