OkAlgo 0.0.1 is now released. More extensions will come down the road. https://github.com/optimatika/okAlgo

neat! out of curiosity, why did you choose to go with ojalgo? Of the linalg/optimization jvm projects out there the others seem to have more stuff implemented. I was looking at wrapping apache commons' matrix & other algos soon into koma but I'm curious if ojalgo is more popular in the wild

It wasnt so much the linear algebra functionality as much as the optimizer I was interested in. That's all okAlgo contains extensions for so far. ojAlgo seems to be popular for its speed despite being pure Java, as well as the optimizer feature. I am trying to learn the algorithms myself so I could perhaps build an implementation one day.