This is a Java library of some tools that happened to be useful in a predictive-analytics environment. In fact, most of them are not specific to this area and might be of general interest.
There is also a Scala interface for some sub modules, currently for pa-toolbox-linalg and pa-toolbox-plotting. It simplifies the use of these modules with Scala in general and with my LinAlg Scala Library in particular.
Some example graphics produced by the plotting module are shown below:
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