# Questions tagged [excel]

For questions related to the use of Excel and the Excel solver. The Excel solver is an add-in that allows the solution of linear programming problems, such as product mix problems (whether maximization or minimization), transportation problems and problems for the allocation of scarce resources. The spreadsheet is easy to use and fast to raise the model. It can obtain the reports of the optimal solution and the sensitivity analysis in a matter of seconds.

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### Determine optimal method for choosing products based on perimeter and number of zones

We need to setup a more efficient quote system for prospective clients, but the logic is difficult to implement (I'm using VBA, but a formula or pseudocode is fine). This seems to be a combinatorial ...
111 views

I'd like to optimize the loading problem in first-mile delivery that maximize the occupancy of the truck. The main question to be answered is this: with the given truck, would this list of items fit ...
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### Can sensitivity analysis and limits report be done on an BILP problem?

I am not that experienced with Operations Research yet. I have become familiar with what Sensitivity Analysis and Limits Reports are in general and through the use of Excel. I know that they can only ...
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### How to approach this shifts problem with Excel Solver?

I am trying to find a way to solve the following problem of mine by using Solver but I get stuck right at the end of it. I have a table of 14 companies each of which want to work on a project. I will ...
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1 vote
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### Optimization of Weekly Productivity Goals

I need to find optimum weekly targets for an 8-week period for a group of employees. The end result expected is maximum of sum of percentage of times the employees met the goal in each week. I am ...
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### How to formulate cumulative sum of LpVariable in Pulp Python

I have a Multiple product LP optimization problem in which the product(B1,B2,D) will be received in variable quantity with respect to date column. The Optimizer should LP variable Output as Assy Out ...
320 views

### It takes a long time to solve excel gurobi-opensolver - is this normal?

The problem I have made associated with OpenSolver and Gurobi takes about 50 minutes to solve, is this normal? It has approximately 365 variables with upper and lower bands, the peculiarity is that ...
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### Python to Excel

Using DOcplex module an optimization problem is solved. There are many decision variables in the solution, for the validation of the mathematical model I want to check them. How can I write the ...
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### Why are the final value and reduced cost 0 in excel sensitivity report for multiple variables even though there exists a unique optimal solution?

In solving a linear program (in specific a network optimization problem of the shortest path type) with the Excel solver, I noticed two things after running a sensitivity report on the solution ...
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### Linear Programming: Integer and non-integer decision variables

I am looking for an answer to a question I can't quite get behind. I am given the following mathematical optimization problem: \begin{align}\min&\quad\sum_{t\in T}s_t\cdot z_t+h_t\cdot i_t+p_t\...
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### Excel Solver: Solving matrix values to match row/column sum according to reference

I've been trying to program Excel Solver to fill the values of a matrix so that the sum of rows and columns match preestablished values. See image: Excel Problem I understand this problem has infinite ...
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### Softwares for Operations Research. Is Excel Outdated or Useless for the OR industry?

I am looking over for softwares recommendation in Introduction to Operations Research Hillier 11th, there are tens of options for learn and apply OR theory using software. I normally check how much ...
576 views

### Why does setting up a problem using Excel's OpenSolver slows down after 24,000 variables?

I am modeling a big linear programming problem size with about 50,000 variables using OpenSolver. Open Solver starts setting up the problem at a constant pace of about 100 variables per second, which ...
3k views

### Excel Solver is not performing as desired

I have a simple optimization problem and would like to solve it using Microsoft Solver. However, the solver does not do what it is supposed to. Briefly to the background: In the problem the gross ...
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1 vote
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### Importing data into SCIP solver

Is it possible to import data into SCIP from Excel (and then export results to Excel)? If yes, how can I do it?
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### Finding average days target for teams to achieve an overall group target using excel solver?

I have 3 teams within a group with each team working on different tasks assigned. I was given data of how each team performed in terms of the number of task completed each month and the average days ...
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### Graphical illustration Excel

I have formulated a linear optimization model and solve it using the Excel Solver. How can I illustrate the slacks vs usage?