TensorFlow API r1.8 Python Module: tf.contrib.kfac.optimizer Defined in tensorflow/contrib/kfac/python/ops/optimizer_lib.py. The KFAC optimizer. Classes class KfacOptimizer: The KFAC Optimizer (https://arxiv.org/abs/1503.05671). Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated August 17, 2018.