Common interests

We spoke with Russ Philbrick, founder of Polaris Optimization Systems, about optimization solutions for energy sector customers. Find out how the AIMMS-based engine PSO (Power System Optimizer) helps the power industry make the most of renewable energy. Can you tell me a little about your backgro...

1 month ago

Jess Es Community Manager

Interview Polaris Optimization Systems: Empowering Decision-making in the Energy Sector

Developers (Math, OR, programming)

4 264 0

1 month ago

The COMPETES electricity market model At PBL, the Netherlands Environmental Assessment Agency, AIMMS is used to model the European electricity market. We use this model for outlooks of future electricity market developments and to analyse policy impacts such as the impact of CO2 taxes on electrici...

Paul Koutstaal Newcomer

Electricity market modelling in AIMMS

Developers (Math, OR, programming)

8 170 1

1 month ago

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here is an overview of the content we published in November. Get a complimentary copy of...

Gloria Quintanilla Administrator

News Supply Chain Digest - November 2019

Supply Chain

1 20 0

1 month ago

Hi, I have an initial solution assigned to the two-dimensional variable x(i,j) . How can I start solving the mathprogram using this initial solution? I did the following steps but I need details about the element parameter which is the second argument in sendtosolversession?) Thanks in advance...

pira1338 Explorer

How to start solving with an initial solution

Solved

Developers (Math, OR, programming)

0 56 2

1 month ago

It’s hard to beat Santa’s supply chain. Who else offers present deliveries to millions of households around the world in a single night? Even our favorite retailers are not there yet! We like to think new methodologies and tools are helping them get a little bit closer, though. In this interview, Di...

Gloria Quintanilla Administrator

Interview How leading retailers prepare for the holiday season

Supply Chain

2 459 0

2 months ago

Hello,I couldnt formulize the precedence relation above in my constraints. Could anyone help me with that? I tried to use the Activities for the tasks but didnt know how to use them with constraintsThanks in advanceMelike

Melike Enthusiast

Precedence Tasks

Developers (Math, OR, programming)

0 82 5

2 months ago

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here is an overview of the content we published in October.How BT is Building a Connected...

Gloria Quintanilla Administrator

News Supply Chain Digest - October 2019

Supply Chain

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2 months ago

Hey, I have this Transportation-Distribution problem of paints and it says that in the 10th day the stock of paint of each color and each type has to be 1000L. I created a constraint: FinalStockConstraint Index domain: (d,c,t) 'd - day; c - color; t - type' Definition: sum[ds,DistributionSiteStoc...

pedronamoradorosa Explorer

Transportation-Distribution problem of paints - Constraint Set

Solved

Supply Chain

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Yafo was developed at the Institute of Forest Management (Technical University of Munich) and is continuously driven further to challenge new research questions. We appreciate the free educational version of Aimms to be up-to-date with the newest modelling techniques. So far YAFO enabled new insig...

3 months ago

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tobi Explorer

Risk-sensitive planning support for forest enterprises: The YAFO model

Developers (Math, OR, programming)

3 323 1

3 months ago

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here is an overview of the content we published in September. How do supply chain professi...

Gloria Quintanilla Administrator

News Supply Chain Digest - September 2019

Supply Chain

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3 months ago

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! Here are the trending topics for August. Could self-organization make your supply chain mor...

Gloria Quintanilla Administrator

News Supply Chain Digest - August 2019

Supply Chain

0 17 0

3 months ago

I tried to multiply a set to a variable in my constraint, which gave the error There is no operation defined for operator "*" with the arguments of data type numeric and data type set. I need to find a solution to avoid this multiplication but come to the same result. sum[j,Stationen*Zuordnung_Auf...

Melike Enthusiast

Errors with operators

Solved

Developers (Math, OR, programming)

0 142 12

4 months ago

Hello Team, I am working on the multidepot-VRP problem an extension of your practical example capacitated VRP. I want to make a model in which vehicles will depart from their depots to serve different customers and turn back to the same depot where it started from. I made a rough model but facing so...

Muhammad Furqan

Multi-depot VRP

Solved

Supply Chain

0 349 16

4 months ago

Hello, trying to solve my Thesis Model there has been message about infeasible solution. ''Warning: After zero iterations CPLEX 12.8 concluded that an integer solution to MeanCostPlan4 does not exist.'' the model is about my thesis, so i would appreciate some help. i attach a zipped file(Fdata1 is...

Giorgos Nikolakopoulos Explorer

Infeasible Solution in my Thesis model

Supply Chain

0 141 5

4 months ago

Hello, my model has the following constraint: s(i,j)*x(j)+sum((m,t_), MW(i,j,m,t_)*y(j,m,t_))+sum((k,t_),MWK(i,j,k,t_))+dM(i,j,t)-dP(i,j,t)=B(i,t) The index domain is: (i,j,t) I want the system to accumulate all MWK(i,j,k,t_) respectively all MW(i,j,m,t_)*y(j,m,t_) from t_0 until t_=t and then t...

peddy3009 Explorer

limit a sum

Solved

Developers (Math, OR, programming)

0 83 2

Hi All, I want to create a user interface or page where i can control some of the constraints to toggle and run the model. e.g. Lets say we have 10 set of constraints and I want to run the model with 8 currently while rest 2 I want to disable for the run. This needs to be dynamic Is there any doc...

4 months ago

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AnkitBhagat Newcomer

Disable some of Constraints in Model through a user interface

Solved

Developers (Math, OR, programming)

0 50 1

5 months ago

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Rachel Explorer

Implementing a 4-4-5 monthly calendar

Solved

I would like to implement a modified monthly calendar, where rather than each month being a strict calendar month, I use the 4 week, 4 week, 5 week pattern. Has anyone used this previously, and if so do have any tips to share? Thanks Rachel

Developers (Math, OR, programming)

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5 months ago

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Katja Newcomer

Delete a project

Solved

Hi, I am using AIMMS for my bachelorthesis. How can I delete a project from "projects"? Thankyou

Developers (Math, OR, programming)

0 57 1

5 months ago

luiswilbert Explorer

How machine learning and optimization can be applied to Omnichannel Retailing?

Today, the challenge for the companies is providing consistent, yet unique and contextual brand experiences across multiple customer-aware touchpoints, including brick and mortar, marketplaces, web, mobile and social. In response to these new customer preferences, the Omnichannel Strategy has been c...

Supply Chain

2 112 2

5 months ago

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JWand Newcomer

Save Upper and Lower Bounds from Baron

Solved

Dear Ladies and Gentleman, I use the solver Baron for a NLP and solve several problems with an if function in the Main Execution. After a specific time limit is exceeded, I want to save the Upper and Lower Bounds in a file or even better in a Parameter. Is this possible? Best regards, Jacqueline...

Developers (Math, OR, programming)

0 98 2

5 months ago

Every month, we send out an email digest with our latest supply chain content. If you're not signed up to receive it in your inbox, you now have the chance to read the trending topics in our Online Community! We will start posting them here on a monthly basis. What's new in July? Assess your Deman...

Gloria Quintanilla Administrator

News Supply Chain Digest - July 2019

Supply Chain

1 58 0