My name is Willie, and I am an industrial engineer. I have been working in manufacturing for many years, and have specialized in Supply Chain Planning, specifically in the Master Production Schedule (MPS) process. A few months ago I graduated with a Master’s degree in Logistics and Operations, and as a graduation thesis I built a GAMS model of Production Planning adjusted to Capacity, for which I based my model on the SCPc model (emphasize that it is a cost minimization model For supply chain production planning) that appears in the book “Introduction to Computational Optimization Models for Production Planning in a Supply Chain” of Dr. Stephan Voss and Prof. David Woodruff. In the companies where I have worked, I have always had the need to have a MPS tool that is flexible and dynamic enough (Excel) to offer me an automated and optimized solution, and now that I have this model in GAMS I would like to integrate it into Excel. I have a relatively advanced ability in Excel, but I am not very skilled with the macros in VBA. I find this new SolverStudio tool that I understand would facilitate this task, but I still do not think I have enough level to develop it myself.

I want to learn SolverStudio, VBA (what I need) and do this integration on my own. How could you help me?

]]>I am trying to minimize a function with two integer variables and two continuous variables in excel. Presently the objective function is defined in excel, is it possible to refer the objective function from the spreadsheet cell. i want to use GAMS solver to solve this problem.

Here is the problem details:

Sheet: Residue

Minimise Cell: H8

by changing cell : B2:B3 , Integer from 1 to 25

by changing cell : B4:B5 , continuous from 0.5 to 0.9999

constraints: B2<B3

Here is another example of using SolverStudio to solve a puzzle, in this case, the Lumosity Pet Detective game.

http://www.sampledsystems.com/using-solverstudio-for-linear-programming/

SolverStudio is great!

]]> AMPL on NEOS makes the following IP connection:

NEOS_HOST=”www.neos-server.org”

NEOS_PORT=3332

This was address in Paul John’s February 25, 2017 at 6:16 pm post in the comments and feedback section.

changes in RunAMPLNEOS.py

http to https and port from 3332 to 3333

I used this correction and was then able to get access to the NEOS server without an error. FYI.

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