Difference between revisions of "ApCoCoA-1:Num.AppKer"
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Revision as of 13:45, 7 October 2009
AppKer
Calculates the approximate kernel of a matrix.
Syntax
Num.AppKer(Matrix:MAT, Epsilon:RAT):MAT
Description
Calculates the approximate Kernel of a Matrix with respect to the residual error Epsilon.
@param Matrix A rational matrix.
@param Epsilon The target residual error.
@return The approximate kernel.
Example
M := Mat([[1,2,3],[4,5,6],[7,8,9]]); AppKer := Num.AppKer(M,0.01); Dec(AppKer,3); Dec(M * Transposed(AppKer),3); -- CoCoAServer: computing Cpu Time = 0.016 ------------------------------- Mat([ ["-0.408", "0.816", "-0.408"] ]) ------------------------------- Mat([ ["-0.000"], ["0.000"], ["0.000"] ]) -------------------------------
See also
