The default configuration file for Linux users is as follows:

$HOME/.keras/keras.json

It is created the first time you use Keras, and may be edited to change the defaults. Here's what that .json file contains:

{ "image_data_format": "channels_last",
"epsilon": 1e-07,
"floatx": "float32",
"backend": "tensorflow" }

The defaults are as follows:

• image_data_format: This is a string, either "channels_last" or channels_first, for the image format. Keras running on top of TensorFlow uses the default.
• epsilon: This is a float, being a numeric fuzzing constant used to avoid division by zero in some operations.
  
• floatx: This is a string and specifies the default float precision, being one of "float16", &quot...