July 2017
Beginner to intermediate
715 pages
17h 3m
English
Content preview from Java: Data Science Made Easy
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Using the jblas API
The jblas API (http://jblas.org/) is a math library supporting Java. It is based on Basic Linear Algebra Subprograms (BLAS) (http://www.netlib.org/blas/) and Linear Algebra Package (LAPACK) (http://www.netlib.org/lapack/), which are standard libraries for fast arithmetic calculation. The jblas API provides a wrapper around these libraries.
The following is a demonstration of how matrix multiplication is performed. We start with the matrix definitions:
DoubleMatrix A = new DoubleMatrix(new double[][]{ {0.1950, 0.0311}, {0.3588, 0.2203}, {0.1716, 0.5931}, {0.2105, 0.3242}}); DoubleMatrix B = new DoubleMatrix(new double[][]{ {0.0502, 0.9823, 0.9472}, {0.5732, 0.2694, 0.916}}); DoubleMatrix C;
The actual statement ...
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