creating models based on: https://colab.research.google.com/drive/1vtguJUse_hACM1xdzPTW9TIgPrWuwwS2#scrollTo=DuvX8N76wk3u
migrate models from python keras to java:
https://towardsdatascience.com/deploying-keras-deep-learning-models-with-java-62d80464f34a