Working with Sparse Arrays (Obsolete Mathematica Tutorial)

Sparse representations of matrices are useful because they do not store every element. If one particular value appears very frequently it can be very advantageous to use a ...

Linear Regression Package (Obsolete Linear Regression Package Tutorial)

The built-in function Fit finds a least-squares fit to a list of data as a linear combination of the specified basis functions. The functions Regress and DesignedRegress ...

Nonlinear Regression Package (Obsolete Nonlinear Regression Package Tutorial)

The built-in function FindFit allows you to perform nonlinear least squares fitting. The function NonlinearRegress gives a number of regression diagnostics and allows you to ...

Performance of Linear Algebra ... (Obsolete Mathematica Tutorial)

This tutorial covers issues related to performance. One of the challenges of building Mathematica is to make sure that the system is general enough to support symbolic ...