Leveraging Java libraries

There are numerous robust, accurate, and efficient Java libraries for mathematics, linear algebra, or optimization that have been widely used for many years:

• JBlas/Linpack: https://github.com/mikiobraun/jblas
• Parallel Colt: https://github.com/rwl/ParallelColt
• Apache Commons Math: http://commons.apache.org/proper/commons-math

There is absolutely no need to rewrite, debug, and test these components in Scala. Developers should consider creating a wrapper or interface to his/her favorite and reliable Java library. The book leverages the Apache Commons Math library for some specific linear algebra algorithms.