ND4J supports n-dimensional arrays, while Breeze does not. jblas is great but it's not fast enough. We've relied on netlibblas in the past, and we're moving to

ND4J supports n-dimensional arrays, while Breeze does not. jblas is great but it's not fast enough. We've relied on netlibblas in the past, and we're moving to faster computation libs now. We'd love for Spark MLlib to plug into ND4J at some point.