I’ve created a stand-alone demo repository and added an example for matrices there: https://github.com/mipt-npm/kmath-demo/tree/master/matrix-demo-jvm. You do not need to bother with multi-module structure right now, just use the configuration from the module I referenced. I would be very grateful for any examples (even not working ones) you and other people would contribute to the repository. I need the feedback to understand what to do next and how to improve the API.
Specifically for matrices there will be some minor changes. Now we have default operations for real matrices in the core, they will be moved to
kmath-for-real module. I will add specific default operations to wrapper modules, meaning that when you call
dot operation with apache-commons module loaded, you will get apache-commons behavior.