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The package solves linear system of equations Ax=b by using Preconditioned Conjugate Gradient Algorithm where A is real symmetric positive definite matrix. A suitable preconditioner matrix may be provided by user. This can also be used to minimize quadratic function (x'Ax)/2bx for unknown x.
Package details 


Author  B N Mandal <[email protected]> and Jun Ma <[email protected]> 
Date of publication  20140403 05:57:28 
Maintainer  B N Mandal <[email protected]> 
License  GPL (>= 2) 
Version  1.1 
Package repository  View on CRAN 
Installation 
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