head.dual

head,dual-method

<p>Return the First or Last Part of an Object</p>

Implements the forward-mode automatic differentiation for
multivariate functions using the matrix-calculus notation from Magnus and
Neudecker (2019) <doi:10.1002/9781119541219>. Two key features of the package
are: (i) it incorporates various optimisation strategies to improve performance;
this includes applying memoisation to cut down object construction time, using
sparse matrix representation to speed up derivative calculation, and creating
specialised matrix operations to reduce computation time; (ii) it supports
differentiating random variates with respect to their parameters, targeting
Markov chain Monte Carlo (MCMC) and general simulation-based applications.

Chun Fung Kwok

ADtools

Automatic Differentiation Toolbox

Dan Zhu

Liana Jacobi

head.dual function

Return the First or Last Part of an Object — head.dual

Return the First or Last Part of an Object

head.dual: Return the First or Last Part of an Object

Description

Usage

Arguments