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Parallel Colt is a multithreaded version of Colt - a library for high performance scientific computing in Java. It contains efficient algorithms for data analysis, linear algebra, multi-dimensional arrays, Fourier transforms, statistics and histogramming.

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Function Objects

Function Objects
Here are some examples demonstrating how function objects can be used to 

   transform a matrix A into another matrix B 
    which is a function of the original matrix A (and optionally yet another matrix 
    C)
   aggregate cell values or a function of them
   generate selection views for cells satisfying 
    a given condition
   sort matrix rows or columns into a user specified 
    order
  You will most likely use them to do many more powerful things