# Tag Info

### Validation and verification of mathematical models

Generally speaking, verification refers to evaluating the conformation of a system, product, or service with its intended requirements and design specifications. On the other hand, validation refers ...
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### Validation and verification of mathematical models

This is just to complement the answer that @Ehsan gave. For both verification and validation, if possible, visualize your results. For example, if you are solving a routing problem, simply ...
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Accepted

### Simulation optimisation: Monte carlo simulation, regression, optimise within regression model?

After further reading it seems that "surrogate models" do exactly this (aka. "meta-models"), a recent discussion of methods is here: https://onlinelibrary.wiley.com/doi/full/10.1111/itor.12292 Also ...
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### Validation and verification of mathematical models

For models being deployed in the "real world" (something that, as an academic, I have heard rumors about), one element of validation is to describe both the objective criteria and the constraints to ...
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### OR-backed serious games

This link, provide 3 different logistic related games, TopShoe, JIT Flight and MyDC. TopShoe: introduces the players to the logistical processes and the tactical decisions that must be made. JIT ...
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### Good distribution assumptions for customer demand in a supply chain

I agree with @QianZhang's answer (nice theoretical properties, easy to implement), and I would add that there is some theoretical justification too. If demands come from customer arrivals, then ...
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### Good distribution assumptions for customer demand in a supply chain

In my understanding, using normal/Poisson distribution for customer demand is mainly for two reasons. These distributions have nice properties for theoretical analysis in supply chain models These ...
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Accepted

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### Simulation optimisation: Monte carlo simulation, regression, optimise within regression model?

You might want to google "response surface methodology" and "simulation" together. There is a ton of literature on this, a mixture of how do to response surface modeling (and how to use it to optimize ...
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### How to decide the hiring headcount for a retail department

If you want to find the number of workers that you need for the job to be done while the hiring cost and available hours differ from full-time work to part-time work and on the other hand you want to ...
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### Validation and verification of mathematical models

I really like the paper by Coffin and Saltzman (INFORMS JOC, 2000), which argues that we should be using much more rigorous statistical tests when we compare the performance of one algorithm/heuristic ...
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### OR-backed serious games

The company GameLab offers these types of games. There you will find a few more "serious games".
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### OR-backed serious games

You could set your class the challenge of manually planning a set of delivery routes and seeing if they can find better routes (less vehicles used, less travel distance/time) than an optimisation ...

### Simulation in Python

Although this question is subjective (as noted in the paper below), I believe that there is enough research done on this topic to make it more answerable. Dias et al. (2016) The paper is very much ...
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### Good textbook for queueing theory and performance modeling

I enjoyed Performance Modeling and Design of Computer Systems: Queueing Theory in Action (Amazon link) by Mor Harchol-Balter, which sounds like it fits your bill pretty well. I have it on my desk. ...
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### Good textbook for queueing theory and performance modeling

I have used Stochastic Modeling: Analysis and Simulation by Barry Nelson and found it to be a pretty gentle introduction. It covers stochastic processes, queuing, and simulation.
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### Alternatives for real-world data collection in simulation courses for Fall 2020

Someone recently pointed me to a journal article about the movement of shoppers in a supermarket. A point of interest is that markets apparently use RFID technology to track shopper movements. If you ...
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### Good distribution assumptions for customer demand in a supply chain

Question: Why do we normally assume normal distribution/Poisson distribution for customer demand in a supply chain? Answer : Based on my experience in the industry, I have seen that generally, ...
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### Significant bias introduced into simple simulation

Note: This answer is intended to show what I have learned from the valuable answer provided by @Mark L.Stone. His post answered my question of why the simulation is biased. Hence, this post provides ...
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### Good distribution assumptions for customer demand in a supply chain

Theoretically it is quite naturally convincing to assume that demand time points are independent. In other words knowing that an item was bought in t1 does not give ...
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