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Auteur:Ahmadreza Marandi

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Zoekresultaten (6)

HBO/WO

MBO

2 november 2020

Course on Robust Policies for Operations Management Problems: Module 2 - Static Robust Optimization

This resource concerns module 2 (Static robust optimization) of the course on 'Robust policies for operations management problems'. It includes web lectures and slides concerning the following topicsand learning objectives: 2.A: Selecting a robust counterpart o How to formulate Robust Optimization mathematically o How to reformulate it using linear programming duality 2.B: Vertex numeration and the deterministic reformulation o Drawback of using the reformulation obtained by duality o How to use vertex enumeration as an alternative technique 2.C: Robust facility location o How to construct the RC using a deterministic model o How to reformulate RC by analyzing the model o What can we get from solving RC 2.D: Dealing with a set of uncertainties o What the effect of the uncertainty set is in the solution o How we can select the parameters of an uncertainty set The material is designed for MSc students in the field of Operations Management. To understand the material, basic knowledge on linear algebra as well as linear optimization is required. There is a typo in the video of 2A. Robust Counterpart. From 38:55 onward, when we use the duality to reformulate the problem, there is a typo that is carried through the rest of the answer. The correct dual is provided in the lecture note page 8 and the final reformulation is on page 9, equation (2.14).

Presentatie

Ahmadreza Marandi

2 november 2020

Course on Robust Policies for Operations Management Problems

This publication concerns the overview and lecture notes for the course Robust policies for operations management problems. For all other materials, please check the resources (part 1-5) and the links to the web lectures. Societal and industrial parties are facing uncertainties in demands, costs, and many more parameters on which their revenues based. So, the important question is: how companies are making decisions while many of the decision parameters are uncertain? In this resources related to this course we will learn how to answer this question from the perspective of “robustness". This is concept that helps us to make decisions that are not vulnerable to the changes in the uncertain parameters. So, most important concept that will be discussed is: Robustness in Optimization problems. Robustness is critical, especially in making strategic and tactical decisions, which are the decisions that are optimal for a long time. Furthermore, it is important to know how the companies should react to the realization of an uncertain parameter. For instance, what companies should do when the demand is known, the prices are set, the weather condition is known, and etcetera. Learning objectives: Different ways of formulating optimization problems Robust decisions methods to solve or approximate the formulated optimization problems Apply these methods to Operation Management problems and real-life cases. This course consists of 5 modules: -Module 1: Introduction and motivation 1.A: Lecture: Introduction 1.B: Lecture Motivation -Module 2: Static robust optimization 2.A: Robust Conterpart 2.B: Vertex enumeration 2.C: Robust Facility Location 2.D: Uncertainty set Selection -Module 3: Adaptive robust optimizationo What the idea behind Finite Adaptibility is and how to formulate it mathematically. 3.A: Adaptivity in optimization - Adaptive robust optimization - •Difference with (static) RO 3.B: Finitely adaptability 3.C: Affine decision rules 3.D: Finite scenario approach -Module 4: Robust optimization with integer variable 4.A: Lecture 4.B: Excercise and solutions -Module 5: Art of modeling

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Ahmadreza Marandi

2 november 2020

Course on Robust Policies for Operations Management Problems: Module 3 - Adaptive Robust Optimization

In module 3 of the course on 'Robust policies for operations management problems' we focus on the following learning objectives: o What adaptivity means and how to formulate it mathematically o What differences exist between adaptive and static RO o What the idea behind Finite Adaptibility is and how to formulate it mathematically. The resources consist of the PPT's and links to all the web lectures concerning: 3.A Adaptivity in optimization - Adaptive robust optimization - •Difference with (static) RO 3.B Finitely adaptability 3.C Affine decision rules 3.D Finite scenario approach The resources consist of the PPT's and links to all the web lectures. Also included is an exercise (including solutions)

Presentatie

Ahmadreza Marandi

2 november 2020

Course on Robust Policies for Operations Management Problems: Module 4 - Robust Optimization with Integer Variables

In module 4 of the course on 'Robust policies for operations management problems' we focus on: robust optimization with integer variables: Learning objectives: o How to deal with integrality in Static Robust Optimization o How to deal with integrality of “here-and-now” decisions in Adaptive Robust Optimization (ARO) o How to deal with integrality of “wait-and-see” decisions in ARO o How to construct an iterative method using Voronoi diagram The materials that are provided for this module are the PPT file and the video of the lecture, as well as a worked out exercise. The material is designed for MSc students in the field of Operations Management. To understand the material, basic knowledge on linear algebra as well as linear optimization is required.

Presentatie

Ahmadreza Marandi

2 november 2020

Course on Robust Policies for Operations Management Problems: Module 1 - Sources of Uncertainty, Probability Theory and its Limitations

This resource concerns module 1 of the course 'Robust policies for operations management problems'. The resources consist of 2 PPT's and the related web -lectures. Learning objectives Sources of uncertainty Limitation of working with average values Limitation of working with chance constraints Why we should use Robust Optimization The material is designed for MSc students in the field of Operations Management. To understand the material, basic knowledge on linear algebra as well as linear optimization is required. Note that the powerpoint version may differ slightly from the PDF version. Please consult the PDF for the original content.

Presentatie

Ahmadreza Marandi

2 november 2020

Course on Robust Policies for Operations Management Problems: Module 5 - Art of Modeling

In module 5 of the course on 'Robust policies for operations management problems' we focus on: the 'Art of Modeling) Learning objectives are to understand: o How modeling affects the solution of Robust Optimization o Why we get such differences The material is designed for MSc students in the field of Operations Management. To understand the material, basic knowledge on linear algebra as well as linear optimization is required.. The resources consist of the PPT and a link the web lecture. Also included is an exercise (including solutions) The material is designed for MSc students in the field of Operations Management. To understand the material, basic knowledge on linear algebra as well as linear optimization is required.

Presentatie

Ahmadreza Marandi