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Usage:
moorepenrose(A), A a real matrix with no MISSING values
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Keywords:
matrices, generalized inverse
B <- moorepenrose(A), where A is a real matrix with no MISSING values
computes the Moore-Penrose inverse of a A.
B satisfies A %*% B %*% A = A and B %*% A %*% B = B.
When A is square and non-singular B = solve(A).
When A is m by n, B is n by m. When m >= n and a is full rank b is
solve(a %c% a, a').
The result is computed from the singular value decomposition of A.
See also solve(), svd().
Gary Oehlert
2003-01-15