[Haskell-cafe] ANNOUNCE: fad 1.0 -- Forward Automatic Differentiation library

Henning Thielemann lemming at henning-thielemann.de
Sat Apr 4 18:59:37 EDT 2009

On Thu, 2 Apr 2009, Bjorn Buckwalter wrote:

> I'm pleased to announce the initial release of the Haskell fad
> library, developed by Barak A. Pearlmutter and Jeffrey Mark Siskind.
> Fad provides Forward Automatic Differentiation (AD) for functions
> polymorphic over instances of 'Num'. There have been many Haskell
> implementations of forward AD, with varying levels of completeness,
> published in papers and blog posts[1], but alarmingly few of these
> have made it into hackage -- to date Conal Elliot's vector-spaces[2]
> package is the only one I am aware of.

Do you count computations with power series also as Automatic 
Differentiation? I mean, arithmetic on power series is just working with 
all derivatives simultaneously.

with Haskell 98 type classes:

with advanced type classes:

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