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public interface QRDecomposition
An interface to classes that implement an algorithm to calculate the QR-decomposition of a real matrix.
This interface is based on the class with similar name from the JAMA library, with the following changes:
getQT
method has been added,solve
and isFullRank
methods have been replaced
by a getSolver
method and the equivalent methods provided by
the returned DecompositionSolver
.
Method Summary | |
---|---|
RealMatrix |
getH()
Returns the Householder reflector vectors. |
RealMatrix |
getQ()
Returns the matrix Q of the decomposition. |
RealMatrix |
getQT()
Returns the transpose of the matrix Q of the decomposition. |
RealMatrix |
getR()
Returns the matrix R of the decomposition. |
DecompositionSolver |
getSolver()
Get a solver for finding the A × X = B solution in least square sense. |
Method Detail |
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RealMatrix getR()
R is an upper-triangular matrix
RealMatrix getQ()
Q is an orthogonal matrix
RealMatrix getQT()
Q is an orthogonal matrix
RealMatrix getH()
H is a lower trapezoidal matrix whose columns represent each successive Householder reflector vector. This matrix is used to compute Q.
DecompositionSolver getSolver()
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