## Software

# Highlights

ABBA and fABBA – Algorithms for the symbolic aggregation of time series.

Anymatrix – An extensible MATLAB matrix collection

Chop – A MATLAB code for rounding matrix elements to lower precision.

CLASSIX – An algorithm for fast and explainable data clustering.

Collection of invalid correlation matrices – A collection of MATLAB functions that generate matrices that are intended to be correlation matrices but for reasons relating to their construction have a negative eigenvalue and so are not positive semidefinite.

Expmv – MATLAB functions for computing the exponential of a matrix times a vector.

HPL-AI-Matrix – A MATLAB function that constructs an n-by-n matrix designed for use in the HPL-AI Mixed Precision Benchmark

The Matrix Computation Toolbox – A collection of MATLAB M-files containing functions for constructing test matrices, computing matrix factorizations, visualizing matrices, and carrying out direct search optimization.

The Matrix Function Toolbox – A MATLAB toolbox connected with functions of matrices.

NLEVP – A MATLAB toolbox providing a collection of nonlinear eigenvalue problems.

Rational Krylov Toolbox for MATLAB – A collection of scientific computing tools based on rational Krylov techniques. See also the corresponding SIAM News articles part 1 and part 2.

**NLA Group Members’ GitHub Pages**

Michael Connolly – https://github.com/michaelc100

Massimiliano Fasi – https://github.com/mfasi

Stefan Güttel – https://github.com/guettel

Nick Higham – https://github.com/higham

Xiaobo Liu – https://github.com/Xiaobo-Liu

Mantas Mikaitis – https://github.com/mmikaitis

Françoise Tisseur – https://github.com/ftisseur