ISTITUZIONI DI RICERCA OPERATIVAModule MODULO I
Academic Year 2022/2023 - Teacher: Patrizia DANIELEExpected Learning Outcomes
The objectives of the course Networks and Supernetworks are as follows:
- to determine paths of minimum and maximum length starting from a root node;
- to apply the concepts of generalized derivatives to functions;
- to apply the Lagrange theory to constrained optimization problems;
- to formulate an equilibrium problem as an evolutionary variational inequality;
- to solve evolutionary variational inequalities.
Knowledge and understanding: the aim of the course is to be able in recognizing constrained optimization problems and in formulating real life problems in mathematical terms
Applying knowledge and understanding: students will be able to identify the functional characteristics of the data, to analyze various optimization situations, to propose optimal solutions to complex problems.
Making judgments: students will be able to analyze the data.
Communication skills: students will be able to communicate their experience and knowledge to other people.
Learning skills: students will have acquired the ability to learn, even autonomously, further knowledge on the problems related to applied mathematics.
Course Structure
The course will be taught through lectures and exercises in the classroom and at the computer labs.
Should teaching be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the programme planned and outlined in the syllabus.
Learning assessment may also be carried out on line, should the conditions require it.
Required Prerequisites
Attendance of Lessons
Detailed Course Content
Graph theory (about 12 hours):
Graphs and digraphs: Definitions and preliminary notions, associated matrices. Kruskal's algorithm and its variant. Dijkstra's algorithm and its variant. Ford algorithm. Bellman-Kalaba’s algorithm. The traveling salesman problem.
Generalized derivatives (about 10 hours)
Directional derivatives, Gâteaux and Fréchet derivatives. Subdifferential.
Computational methods (about 8 hours)
The subgradient method. The discretization method.
Network models (about 17 hours)
Traffic networks. The Braess' paradox. Efficiency measure of a network. Supernetworks with three levells of decision-makers.
Textbook Information
- L. Daboni, P. Malesani, P. Manca, G. Ottaviani, F. Ricci, G. Sommi, “Ricerca Operativa”, Zanichelli, Bologna, 1975.
- P. Daniele, “Dynamic Networks and Evolutionary Variational Inequalities", Edward Elgar Publishing, 2006.
- J. Jahn, "Introduction to the Theory of Nonlinear Optimization", Springer, 1996.
- Papers on STUDIUM http://studium.unict.it
Course Planning
| Subjects | Text References | |
|---|---|---|
| 1 | Cammini di lunghezza minima e massima | 1 |
| 2 | Proprietà delle derivate generalizzate | 3 |
| 3 | Il sottodifferenziale di una funzione e sue proprietà | 3 |
| 4 | Reti di traffico con vincoli aggiuntivi | 2 |
| 5 | Misura secondo Latora-Marchiori e secondo Nagurney-Qiang | 3 |
Learning Assessment
Learning Assessment Procedures
The final exam consists of an oral test during which the candidate demonstrates that he/she has assimilated the topics covered in the course.
Verification of learning can also be carried out electronically, should the conditions require it.
Examples of frequently asked questions and / or exercises
The algorithm for the shortest path in a graph.
The sub-gradient method.
The discretization method.
The properties of generalized derivatives.
Compare the Latora-Marchiori measure with the Nagurney-Qiang measure.