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This Seminar addresses Master and Bachelor students in Computer Science and related study programs that mandate participation in at least one Seminar.
The first meeting
The first meeting takes place on Monday October 28, at 14:05 in room 401 of E1 3.
Overview of the seminar
This Seminar has two goals:
- to practice and to refine the skills of "scientific presentation", "scientific argumentation", and "scientific reflection";
- to learn more about various theoretically challenging and practically relevant concurrency models, especially process algebra.
Despite its importance and more than three decades of highly active research, concurrent systems are still less understood than sequential systems. A comprehensive model of concurrency, comparable to Turing machines and the lambda calculus for sequential programs, is yet to be established for concurrency. In our seminar we will study some of the most important models and results for concurrency, and we will see why concurrency is so difficult to understand.
The scientific goal of the seminar is to provide a broad overview of the theoretical underpinnings of concurrency theory.
- Calibration - November 11 starting 08:45: 10 minutes presentations explaining either "What is Branching Bisimulation?" or "What are BPA, BPP, and BCCSP?". You will present to half of the audience (the one with the other topic assigned).
- 10% of the final grade
- Reading Phase - November/December: We jointly study chapters from this book. Everyone will have read the respective material upfront, each student will be assigned a part of the matter as moderator to guide through the discussion.
21% of the final grade
- Presentation contents - by December 17: You will have settled scanning the relevant literature, and have sent over a draft story line of your presentation, to be discussed with the instructor.
5% of the final grade - failing to meet the deadline implies failing the seminar.
- Presentation slides - by January 20: You deliver the full slide set to the instructor, and defend it at an individual appointment.
11% of the final grade - failing to meet the deadline implies failing the seminar.
- Presentation - February (or in a block): 35 minutes presentations. You need to construct a good story and explain it properly therein.
33% of the final grade
- Active participation: this involves feedback to the presentations of your colleagues and, most importantly, participation in the "scientific" discussions during and after the presentations, as well as in the reading phase.
20% of the final grade
We selected one or two papers from the arguably most intriguing areas of concurrency theory as entry points for deeper self-study of the topics.
Axiomatising Parallel CompositionEntry points:
Luca Aceto, Anna Ingólfsdóttir: The Saga of the Axiomatization of Parallel Composition. CONCUR 2007: 2-16
Rule formatsEntry point:
Bard Bloom, Sorin Istrail, Albert R. Meyer: Bisimulation Can't be Traced. J. ACM 42(1): 232-268 (1995)
Flavors of I/O AutomataEntry points:
Ran Canetti, Ling Cheung, Dilsun Kirli Kaynar, Moses D. Liskov, Nancy A. Lynch, Olivier Pereira, Roberto Segala:Task-structured probabilistic I/O automata. J. Comput. Syst. Sci. 94: 63-97 (2018)
Axiomatising PriorityEntry point:
Luca Aceto, Taolue Chen, Anna Ingolfsdottir, Bas Luttik and Jaco van de Pol. On the Axiomatizability of Priority II. Theoretical Computer Science 412(28):3035–3044, 2011.
Luca Aceto, Antonis Achilleos, Adrian Francalanza, Anna Ingólfsdóttir, Karoliina Lehtinen: Adventures in monitorability: from branching to linear time and back again. PACMPL 3(POPL): 52:1-52:29 (2019)
Petri Nets, CCS, and Nested UnitsEntry points:
Hubert Garavel: Nested-unit Petri nets. J. Log. Algebr. Meth. Program. 104: 60-85 (2019)
Gul A. Agha, Prasannaa Thati, and Reza Ziaei. Actors: A model for reasoning about open distributed systems. Formal Methods for Distributed Processing - An Object Oriented Approach, chapter 8, pages 155–176. Cambridge University Press, New York, NY, USA, 2001.
Branching bisimilarityEntry point:
Petr Jancar: Branching Bisimilarity of Normed BPA Processes as a Rational Monoid. Logical Methods in Computer Science 13(4) (2017)
Coupled simulationEntry point:
Benjamin Bisping, Uwe Nestmann: Computing Coupled Similarity. TACAS (1) 2019: 244-261
Luca Aceto, Wan Fokkink, Anna Ingólfsdóttir: A Menagerie of Non finitely Based Process Semantics over BPA* - From Ready Simulation to Completed Traces. Mathematical Structures in Computer Science 8(3): 193-230 (1998)