RemoteMonitor in keras

There are several packages to perform deep learning in python. And my favorite one is keras.
https://keras.io/
Today, I found new function in keras.callbacks named RemoteMonitor.
The function provide real time visualization of learning.
So, I wrote very simple example using IRIS dataset.
At first to use RemoteMonitor, I need clone api from following URL.
https://github.com/fchollet/hualos
And run api.py
Now, I can access localhost:9000 via web browser.

iwatobipen$ git clone https://github.com/fchollet/hualos
iwatobipen$ cd hualos
iwatobipen$ python api.py

Then, perform machine learning.

from sklearn.datasets import load_iris
from sklearn.cross_validation import train_test_split
from keras.utils.np_utils import to_categorical
from keras.callbacks import RemoteMonitor
# prepare dataset
irisdata = load_iris()
X,Y = irisdata["data"], irisdata["target"]
train_X, test_X, train_Y, test_Y = train_test_split( X, Y, test_size=0.2, random_state=123 )
# make monitor with default settings.
monitor = RemoteMonitor()

from keras.models import Sequential
# build model
model = Sequential()
from keras.layers import Dense, Activation
model.add( Dense( output_dim=12, input_dim=4 ) )
model.add( Activation( "relu" ) )
model.add( Dense( output_dim=3 ) )
model.add( Activation( "softmax" ) )
model.compile( optimizer="sgd",
               loss="sparse_categorical_crossentropy",
               metrics = ["accuracy"] )

OK. Let’s learn!
To monitor the progress, I set [ monitor ] in callbacks argument.

hist = model.fit( train_X, train_Y, nb_epoch=50, batch_size=20, callbacks=[ monitor ] )

During the learning, localhost:9000 is automatically updated and I can get following image.
This page made by Flask and d3.js. Cool !!!

“api.py” will not work on python3.x.
If you want to run the code in python3.x, I recommend replace following line because of iteritems is renamed to items in python3.

        lines = ["%s: %s" % (v, k)
--                 for k, v in self.desc_map.iteritems() if k]
++                 for k, v in self.desc_map.items() if k]

FYI.
9th Mishima.syk will be held 10th Dec. Topic is TensorFlow and Keras hans on.
https://connpass.com/event/42284/

Don’t miss it. ;-)

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