Last data update: 2014.03.03
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SMO (statistical methods ontology)
Results 1 - 9 of 9 found.
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expAtv
(Package: expm ) :
Compute Matrix Exponential exp(A t) * v directly
Compute exp(A t) * v directly, without evaluating exp(A) .
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: expAtv, expmv
●
0 images
logm
(Package: expm ) :
Matrix Logarithm
This function computes the (principal) matrix logarithm of a square matrix. A logarithm of a matrix A is L such that A= e^L (meaning A == expm(L)
), see the documentation for the matrix exponential, expm
, which can be defined as
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: logm
●
0 images
expmFrechet
(Package: expm ) :
Frechet Derivative of the Matrix Exponential
Compute the Frechet derivative of the matrix exponential operator
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: expmFrechet
●
0 images
sqrtm
(Package: expm ) :
Matrix Square Root
This function computes the matrix square root of a square matrix. The sqrt of a matrix A is S such that A = S S .
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: sqrtm
●
0 images
expm.Higham08
(Package: expm ) :
Matrix Exponential [Higham 2008]
Calculation of matrix exponential e^A with the ‘Scaling & Squaring’ method with balancing.
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: expm.Higham08
●
0 images
expmCond
(Package: expm ) :
Exponential Condition Number of a Matrix
Compute the exponential condition number of a matrix, either with approximation methods, or exactly and very slowly.
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: expmCond
●
0 images
expm
(Package: expm ) :
Matrix Exponential
This function computes the exponential of a square matrix A , defined as the sum from r=0 to infinity of A^r/r! . Several methods are provided. The Taylor series and Padé approximation are very importantly combined with scaling and squaring.
● Data Source:
CranContrib
● Keywords: algebra, math
● Alias: expm, mexp
●
0 images
balance
(Package: expm ) :
Balance a Square Matrix via LAPACK's DGEBAL
Balance a square matrix via LAPACK's DGEBAL
. This is an R interface, mainly used for experimentation.
● Data Source:
CranContrib
● Keywords: arith, array
● Alias: balance, dgebal
●
0 images
matpow
(Package: expm ) :
Matrix Power
Compute the k -th power of a matrix. Whereas x^k
computes element wise powers, x %^% k
corresponds to k - 1 matrix multiplications, x %*% x %*% ... %*% x
.
● Data Source:
CranContrib
● Keywords: arith, array
● Alias: %^%, matpow
●
0 images