As what I described in the title, we are especially interested in those for dealing with big data----ts efficiency and stability, and used in industry not in experiment or university. Thanks!
Scala is the only real language that has Big Data at it's core. You have MLLib that sits on Spark, and as Scala is Functional it makes parallel computing really natural. R, Python and Matlab are not suitable for industry productization, well some would say Python's horrible dynamic typing can be handled a little using special build tools, but really its not type safe and there is no way to solve that problem.