lin_alg.hpp File Reference
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Namespaces | |
| mlpack | |
Linear algebra utility functions, generally performed on matrices or vectors. | |
| mlpack::math | |
Miscellaneous math routines. | |
Functions | |
| void | Center (const arma::mat &x, arma::mat &xCentered) |
| Creates a centered matrix, where centering is done by subtracting the sum over the columns (a column vector) from each column of the matrix. More... | |
| void | Orthogonalize (const arma::mat &x, arma::mat &W) |
| Orthogonalize x and return the result in W, using eigendecomposition. More... | |
| void | Orthogonalize (arma::mat &x) |
| Orthogonalize x in-place. More... | |
| void | RandVector (arma::vec &v) |
| Overwrites a dimension-N vector to a random vector on the unit sphere in R^N. More... | |
| void | RemoveRows (const arma::mat &input, const std::vector< size_t > &rowsToRemove, arma::mat &output) |
| Remove a certain set of rows in a matrix while copying to a second matrix. More... | |
template < typename T > | |
| T | Sign (const T x) |
| Signum function. More... | |
| void | Smat (const arma::vec &input, arma::mat &output) |
| The inverse of Svec. More... | |
| void | Svec (const arma::mat &input, arma::vec &output) |
| Upper triangular representation of a symmetric matrix, scaled such that, dot(Svec(A), Svec(B)) == dot(A, B) for symmetric A, B. More... | |
| void | Svec (const arma::sp_mat &input, arma::sp_vec &output) |
| size_t | SvecIndex (size_t i, size_t j, size_t n) |
| Return the index such that A[i,j] == factr(i, j) * svec(A)[pos(i, j)], where factr(i, j) = sqrt(2) if i != j and 1 otherwise. More... | |
| void | SymKronId (const arma::mat &A, arma::mat &op) |
| If A is a symmetric matrix, then SymKronId returns an operator Op such that. More... | |
| void | VectorPower (arma::vec &vec, const double power) |
| Auxiliary function to raise vector elements to a specific power. More... | |
| void | WhitenUsingSVD (const arma::mat &x, arma::mat &xWhitened, arma::mat &whiteningMatrix) |
| Whitens a matrix using the singular value decomposition of the covariance matrix. More... | |
Detailed Description
Linear algebra utilities.
mlpack is free software; you may redistribute it and/or modify it under the terms of the 3-clause BSD license. You should have received a copy of the 3-clause BSD license along with mlpack. If not, see http://www.opensource.org/licenses/BSD-3-Clause for more information.
Definition in file lin_alg.hpp.