Re: calculate de Jong function

*To*: mathgroup at smc.vnet.net*Subject*: [mg57015] Re: [mg56969] calculate de Jong function*From*: "David Park" <djmp at earthlink.net>*Date*: Thu, 12 May 2005 02:33:42 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Stefen, Is this what you want? deJong[vector_] := Plus @@ (vector^2) Mapping it onto a list of vectors of varying length... deJong /@ {{1, 1, 1}, {1, 2, 3, 4}, {a, b}} {3, 30, a^2 + b^2} The marvels of Mathematica functional programming! David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Stefan Schuster To: mathgroup at smc.vnet.net [mailto:bi1169*delete_from_star_to_star* at fh-weihenstephan.de] Subject: [mg57015] [mg56969] calculate de Jong function Hello, I don't know how I should implement the first de jong function: f(x)=Sum((x_i)^2) where x is a Vector with n dimensions and x_i is the value of the i-th Dimension. i.e. all Values of the Vector are squared and added. My problem is that I don't know how many Dimensions there are, so I can't define the borders of the SUM function. thanks in advance for help Stefan

**Follow-Ups**:**InterpolatingFunctionAnatomy.m***From:*Chrisantha <ctf20@sussex.ac.uk>