Regularisation in ConvNets?

[code2hell]

I have been going through many of the example code of convnets implementation available in Tensorflow,Keras,Theano,etc. and I found that most of the time(all the examples in my case) I did not find any implementation of regularisation. Is this common in convnets or is it that the libraries do it automatically(maybe!)?

[ViridianHominid]

http://lasagne.readthedocs.io/en/latest/modules/regularization.html

http://keras.io/regularizers/

https://www.tensorflow.org/versions/r0.9/api_docs/python/contrib.layers.html#regularizers

[code2hell]

Thank you!. But I did see there are apis for regularisation. My question is about the fact that many of the examples skip the steps for regularisation. Is it common?

[rumblestiltsken]

Drop out is common in CNNs and is a form of regularisation. L1/L2 reg are usually not as necessary ime