CentOS is without doubt one of the most widely used Linux distributions, mainly among Linux servers. It's a free, community-supported fork of Red Hat Enterprise Linux (RHEL) that provides a stable and fine-tuned operating system.
Keras is a Python-based high-level neural networks API that is capable of running on top TensorFlow, CNTK, or Theano frameworks used for machine learning. It can be said that Keras acts as the Python Deep Learning Library. Keras was created with emphasis on being user-friendly since the main principle behind it is “designed for human beings, not machines.” The core data structure of Keras is a model, or a way to organize layers.