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\name{NEWS}
\title{News for Package "RSpectra"}
\section{Changes in RSpectra version 0.16-2}{
\subsection{BUG FIXES}{
\itemize{
\item Fixed C++20 compiler errors, thanks to Prof. Ripley.
}
}
}
\section{Changes in RSpectra version 0.16-1}{
\subsection{BUG FIXES}{
\itemize{
\item Fixed BLAS/LAPACK calls, thanks to Prof. Ripley.
}
}
}
\section{Changes in RSpectra version 0.16-0}{
\subsection{NEW FEATURES}{
\itemize{
\item \code{svds()} now supports implicit centering and scaling of the matrix
via the \code{center} and \code{scale} parameters in the \code{opts}
argument, suggested by \href{https://github.com/robmaz}{@robmaz}
(\href{https://github.com/yixuan/spectra/issues/73}{#73} of Spectra).
}
}
}
\section{Changes in RSpectra version 0.15-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Updated Spectra to v0.8.1.
\item Added support for new matrix types \strong{dsCMatrix} and
\strong{dsRMatrix} to handle sparse and symmetric matrices,
contributed by \href{https://github.com/flying-sheep}{@flying-sheep}
(\href{https://github.com/yixuan/RSpectra/pull/16}{#16}).
\item \code{eigs()} now detects the symmetry of \strong{dgRMatrix} matrices.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Improved the documentation about the relationship between SVD
and eigen decomposition for symmetric matrices, thanks to
\href{https://github.com/alexpghayes}{@alexpghayes}
(\href{https://github.com/yixuan/RSpectra/pull/17}{#17}).
\item (Internal) Replaced the deprecated \code{Eigen::MappedSparseMatrix}
class in the C++ code.
}
}
}
\section{Changes in RSpectra version 0.14-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Updated Spectra to v0.8.0.
\item New parameter \code{opts$initvec} in \code{eigs()} and \code{eigs_sym()}
to allow users supplying the initial vector for the algorithm.
}
}
}
\section{Changes in RSpectra version 0.13-1}{
\subsection{BUG FIXES}{
\itemize{
\item Updated Spectra to v0.6.2 that fixes regressions in v0.6.1
on some edge cases.
}
}
}
\section{Changes in RSpectra version 0.13-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Using \pkg{prettydoc} to format vignette.
\item Updated Spectra to v0.6.1 that improves numerical accuracy of
eigen-solvers.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Registered native routines per CRAN's policy.
}
}
}
\section{Changes in RSpectra version 0.12-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Now \code{svds()} supports user-defined implicit matrix that is
specified by two functions, \code{A} and \code{Atrans}, which
calculate the matrix multiplication and transpose multiplication
respectively.
\item Added a package vignette.
}
}
}
\section{Changes in RSpectra version 0.11-0}{
\subsection{NEW FEATURES}{
\itemize{
\item New package to supersede \pkg{rARPACK} to avoid name confusion.
\item Imported from \pkg{rARPACK} 0.10-0.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Improved numerical stability.
\item Fixed convergence failure for matrices that have repeated
eigenvalues.
}
}
}
\section{Changes in rARPACK version 0.10-0}{
\subsection{BUG FIXES}{
\itemize{
\item Updated the backend Spectra library, which fixed the compatibility
with Eigen >= 3.2.6.
}
}
}
\section{Changes in rARPACK version 0.9-0}{
\subsection{BUG FIXES}{
\itemize{
\item Fixed a bug that causes the algorithm not converging on some matrices.
}
}
}
\section{Changes in rARPACK version 0.8-1}{
\subsection{BUG FIXES}{
\itemize{
\item Fixed a compilation problem on Solaris.
}
}
}
\section{Changes in rARPACK version 0.8-0}{
\subsection{NEW FEATURES}{
\itemize{
\item The backend program is now changed from ARPACK to
\href{https://github.com/yixuan/spectra}{Spectra},
which brings cleaner code and better performance.
\item \code{eigs_sym()} now accepts more matrix types.
\item Added a C interface for other packages to link to.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Fixed a bug reported by xshi19
(\href{https://github.com/yixuan/rARPACK/issues/8}{#8}).
\item Fixed a performance issue reported by swajnautcz
(\href{https://github.com/yixuan/rARPACK/issues/10}{#10}).
}
}
}
\section{Changes in rARPACK version 0.7-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Support for implicit matrix, contributed by Jiali Mei.
User can supply a function \code{FUN} rather than an explicit
matrix to \code{eigs()}, and the eigenvalues/eigenvectors of this
operator will be computed. \code{FUN(x, args)} must return a vector
of the same length as \code{x}.
\item \code{eigs()} will test the symmetry of matrix before actual
computation, since symmetric matrices can guarantee real
eigenvalues and eigenvectors, and the numerical result is more
stable.
}
}
\subsection{BUG FIXES}{
\itemize{
\item C++ code of \code{svds()} is completely rewritten. Now it is more
readable and easier to maintain.
\item Fix a bug possibly coming from ARPACK, which sometimes gives
incorrect result of complex eigenvectors.
\item Avoid using a C random number generator.
}
}
}
\section{Changes in rARPACK version 0.6-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Add support for new matrix types: \strong{dgeMatrix} and
\strong{dgRMatrix}.
\item \code{eigs()} now allows a full Eigen Decomposition, meaning that
all the eigenvalues are calculated. In this case \code{eigs()} is
simply a wrapper of \code{eigen()}, and with a warning issued.
\item Ditto for \code{svds()}.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Rewrite C++ code using classes and templates.
\item Fix errors in checking the values of \code{k} and \code{ncv}.
}
}
}
\section{Changes in rARPACK version 0.5-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Add \code{svds()} function to calculate truncated SVD.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Now sort eigenvalues in decreasing order.
\item Rename \code{eigs.sym()} to \code{eigs_sym()} to avoid confusion.
\item Fix a matrix out-of-bound error.
}
}
}
\section{Changes in rARPACK version 0.4-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Implement shift-and-invert mode for all supported eigen problems.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Update arpack-ng to 3.1.4.
}
}
}
\section{Changes in rARPACK version 0.3-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Now \code{eigs()} supports real symmetric matrices.
}
}
}
\section{Changes in rARPACK version 0.2-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Now \code{eigs()} supports sparse real nonsymmetric matrices of the
class \strong{dgCMatrix}, defined in the \pkg{Matrix} package.
}
}
}
\section{Changes in rARPACK version 0.1-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Initial version. For now \code{eigs()} supports dense real
nonsymmetric matrices.
}
}
}
|
