Iman Rahimi

30 Questions 36 Answers 0 Followers

Questions related from Iman Rahimi

Do cplex solver in GAMS and CPLEX software have same results?

I have seen many scholars use CPLEX solver in GAMS as they can solve the problem with ILOG CPLEX software. So in this case,they should possesses same results?

18 February 2017 272 11 View

How can we use benders decomposition for only binary programming?

is there any trick for using benders decomposition for binary programming?

16 February 2017 743 1 View

What is primal infeasible solution in GAMS?

I am using GAMS for solving a MILP problem which includes binary variables. However there is a problem in the solution. Surprisingly, I have seen that one of the binary variables in the solution...

24 January 2017 2,522 8 View

Is it acceptable to claim our multi objective model is not non-convex if both results from epsilon constraint and the sum weight are the same?

I have used epsilon constraint method as well ass the sum weighted method to find Pareto point for bi-objective model;in this case I have found same results ,same number of Pareto points,can we...

16 January 2017 8,527 7 View

Can anybody suggest to me how I can stop process of bender decomposition algorithm before finishing iteration?

I am using accelerated bender decomposition algorithm with GAMS,in this case lower bound and upper bound overlap together before finishing second iteration but program is not stop until the end of...

04 January 2017 8,983 3 View

How can I add optimization library(linear and nonlinear) to C++?

greetings,I am using c++ for optimization mathematical problem,in this case how can I add optimization library to c++?

24 December 2016 2,114 6 View

How we can input our factors in a model for design expert software?

Dear researchers, I am implementing design of experiment ,full factorial ,however after analyzing ,there is no sign of factor for predicting model. Actually software(design expert) dose not...

04 July 2016 9,968 3 View

Is anybody an expert in bender decomposition algorithm programming with GAMS software which may help me in this regard?

Dear researcher,I have a program with GAMS software regard to bender decomposition algorithm that I need an expert to advise me in this regard.

15 September 2015 3,927 4 View

What is the equation for extract solar radiation from MODIS satellite using by ENVI software?

dear researchers my project is related to extract solar radiation from MODIS product and I want to use ENVI software , but I couldn't find suitable equation or formula for this subject , I should...

27 April 2015 4,855 4 View

What kind of network DEA is suggested for evaluating performance of supply chain network?

there are several network models for performance evaluating of supply chain,including radial or non radial,slackbased,.. what is the best way for evaluating performance when we consider supply...

03 April 2015 2,902 4 View

Does anybody know the advantages of bender decomposition algorithm against metaheuric ones in dealing with multi-objective Nphard problem?

There are several methods including, evolutionary algorithm, exact algorithms, decomposition algorithms, and so on. Bender decomposition has proved analytically that always converge to optimal...

19 March 2015 7,121 6 View

How can I write multi-objective with GAMS?

Dear friendsI am trying to do multi-objective optimization with the weighted sum -method,but I could not able to find Pareto set solution between two conflict objective,from my point of view,maybe...

26 January 2015 8,461 27 View

Can any researcher give me a hint how I can write multi-objective optimization with GAMS?

Thanks in advance.

08 December 2014 1,171 9 View

Is it possible to combine scenario tree with fuzzy?

How can we integrate and define the possibility of a scenario tree with fuzzy?

23 September 2014 3,534 2 View

What parameters should be checked in sensitive analysis for supply chain network design?

When do we need to do sensitive analysis and what relationship and parameters should be check in supply chain network design?

01 August 2014 2,011 6 View

How can we make a scenario in a logistic system?

Considering a logistic system including plant,warehouses,supplier,retailers in single period with different transportation modes,with initial investment, How could we make different scenarios?what...

13 July 2014 9,579 12 View

In an optimization problem, how can we add constraint with consideration number of variables?

Is there any relation between number of variables and constraints in an optimization problem?

03 July 2014 9,858 9 View

How could we add a constraint with some new variable to an optimization model?

Sometimes there is a gap in an optimization model, such as: Min cx subject to: AX

20 May 2014 1,983 6 View

Does anybody know how I can access software for generating or simulating supply chain networks such as GERAND ?

26 April 2014 8,028 1 View

Could any body tell me how can I access secondary data to test an integer programming model (in the field of a supply chain network)?

I have developed integer optimization programming for a supply chain network.

17 April 2014 6,270 2 View

What is the most important problem in inventory control?

Inventory control has important role for supply chain network design in multi echelon, multi period. I'm looking for the most significant problem facing this network.

10 April 2014 8,834 9 View

Does anybody know about three major problems in implementing the precision forestry approach in Malaysia?

As above.

03 April 2014 989 3 View

Does anybody know how can I order figures exactly in the position we call in Latex template?

When I want to insert figures to my documents with Latex(MikTex) all figures put on the same position at the end of section.

26 March 2014 6,613 48 View

Is there any criteria for clustering data with one attribute?

We have four sets of data for clustering, and want to cluster them into two clusters. We have only one attribute in this regard. How can we classify them?

02 December 2013 2,545 2 View

I want to evaluate TQM (total quality management) implementation ability for a company - can anyone help?

How can I prepare a questionnaire?

20 October 2013 1,442 6 View

In relation to clustering, how do I divide a number of one group to two clusters with genetic algorithm?

In this issue how can I define objective function? On the other hand does anybody know any criteria for dividing clusters that would be useful for genetic algorithm? Actually this is a framework...

14 October 2013 1,179 2 View

Can someone recommend a questionnaire related to a possibility to obtain TQM (total quality management) in factories and companies?

Can somebody recommend a sample of questionnaire in this regard, and how to prepare it?

13 October 2013 7,225 2 View

Which factors do I have to consider for a survey on a mega steel factory?

I am doing a survey for a mega steel factory as case study for quality management. Does anybody know which factors should be taken into account?

11 October 2013 7,886 1 View

Advantages of re-clustering with new method?

Actually what can we gain from re-clustering?

25 September 2013 2,350 3 View

Can someone recommend a way to access a questionnaire sample for AHP?

When I want to obtain importance of every criteria and alternative, how can I prepare a questionnaire for this goal? Is there any source that could be helpful?

10 July 2013 8,150 17 View