How does TensorFlow compute cost in hidden layers?

Hi @Naman_Chhibbbar

these concepts are very important. In doubt feel free to re-warch the course or ask any open question in this forum.

A cost function provides a metric you can use to improve your optimization. When fitting a model you actually want to minimise the costs, (the model error). See also:

Gradient descent is a powerful method for above mentioned optimization when fitting your model. It is really well explained by Andrew Ng in this video:

Also this thread might be interesting for you:

see also this source.

Happy learning!

Best regards

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