Keras: Change lr without recompiling the model

[RaduStoicescu]

Can I change the lr without model.compile(), if I compile the model several times I run out of memory. If I use clear_session() I lose the weights.

Is there a way to change the lr without recompiling?

[roya0045]

https://keras.io/callbacks/
This should contain what you want.

[fchollet]

If I use clear_session() I lose the weights.

You could use get_weights / set_weights...

Note that you can change the learning rate at any time via K.set_value(model.optimizer.lr, value) (see code in the learning rate scheduler callback).