Re: Minimizing an integer value function

*To*: mathgroup at smc.vnet.net*Subject*: [mg60896] Re: Minimizing an integer value function*From*: Bill Rowe <readnewsciv at earthlink.net>*Date*: Sun, 2 Oct 2005 01:54:47 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

On 10/1/05 at 2:55 AM, ingolf.dahl at telia.com (Ingolf Dahl) wrote: >Suppose we have a function that only takes integer values, but >anyway is quite smooth >e.g. >func1[x_, y_, z_] := Floor[(x - 2.1)^2 + (y - 3.21)^2 + (z - 4.3)^4 >+ 54.9] >or >func2[x_, y_, z_] := Floor[(x - 2)^2 + (y - 30000)^2 + (z - 4)^4 + >54.8] >What is the best way to minimize such a function, using >Mathematica? Hmmm... You say the function "only takes integer values" but the examples you post are written to accept any value and return integer values. Also, I would not decribe something returning integer values as quite smooth. However, NMinimize does what you want. For example, In[1]:= NMinimize[{func1[x, y, z], {x, y, z} \[Element] Integers}, {x, y, z}] Out[1]= {54., {x -> 2, y -> 3, z -> 4}} -- To reply via email subtract one hundred and four