Arbiter is a tool dedicated to tuning (hyperparameter optimization) of machine learning models.
Learn more about arbiter here:
https://deeplearning4j.org/docs/latest/arbiter-overview
Find some examples of using arbiter here:
https://github.com/eclipse/deeplearning4j-examples/tree/master/dl4j-examples/src/main/java/org/deeplearning4j/examples/arbiter