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學生對 EIT 数字 提供的 System Validation: Automata and behavioural equivalences 的評價和反饋

4.2
99 個評分
29 條評論

課程概述

Have you ever experienced software systems failing? Websites crash, calendar not synchronising, or even a power blackout. Of course you have! But did you know that many of these errors are the result of communication errors either within a system or between systems? Depending on the system, the impact of software failures can be huge, even resulting in massive economic damage or loss of lives. Software, and in particular the communication between software-intensive systems, is very complex and very difficult to get right. However, we _need_ dependability in the systems we use, directly or indirectly, to support us in our everyday lives. System Validation helps you to design embedded system behaviour that is structurally sound. It also enforces you to make the behaviour simple and insightful; systems that are designed for sound behaviour are also much easier to maintain and adapt. System Validation is the field that studies the fundamentals of system communication and information processing. The techniques put forward in system validaton allow to prove the absence of errors. This first course ’Automata and behavioural equivalences', builds the foundation of the subsequent courses, showing you how to look at system behaviour as state machines. It discusses behavioural equivalences and illustrate these in a number of examples and quizzes. This course explains labelled transition systems or automata to model behaviour for especially software controlled systems. An important question is when two behaviours represented by such automata are equal. The answer to this question is not at all straightforward, but the resulting equivalences are used as powerful tools to simplify complex behaviour. This allows us to exactly investigate and understand the behavioural properties of such systems precisely. Especially, in the combination with hiding of behaviour, equivalence reduction is a unique technique to obtain insight in the behaviour of systems, far more effective than simulation or testing. Using this insight we can make the models correct. Such models form an excellent basis for the production of concise, reliable and maintainable software. This course is part I of the set of courses for System Validation. System Validation, as a set of courses, is part of a larger EIT Digital online programme called 'Internet of Things through Embedded Systems'....

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MT

Oct 19, 2016

Very interesting and a good fine-tuning experience to my brain relating to systems! Awesome!

CD

Dec 14, 2016

Although superficial, it is a very good MOOC for introducing LTS testing.

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1 - System Validation: Automata and behavioural equivalences 的 25 個評論(共 29 個)

創建者 Volkov O

Nov 02, 2018

Very little explanations on quite complex matter (especially on branching bisimulation). References to the book are helpful except that sometimes it has different definitions. For example the books definition of the language is the set of non-extendable traces while the lector treats it as the set of terminated traces. The description of alternating bit protocol is absolutely beyond my understanding. Though its rather simple and well described in wikipedia.

創建者 Minjun K

Oct 17, 2017

Content is very unique and nice, but delivery is quite poor. The instructor is murmuring almost every word, and pronunciation is unclear, so that I had to just read the subtitle instead of actually listening to the lecture. It was just too painful for me that I am now hesitating whether I should continue to the next part or not...

創建者 Serjey G I

May 28, 2018

A little coarse course.

創建者 Aaron B

Sep 08, 2017

This course is incredibly information dense in lectures, and very light on examples and why and how to apply what you've learned:

First: there are no problem sets and very few examples, making it hard to explore the topics discussed in the lecture. I'm not the best listener, so maybe everything is clear and I'm missing it, but doing is the way I learn best. Also, I can find almost no reference to this topic anywhere else which is a little unusual

Second: the lectures don't motivate the topic in any practical way. Even the 'alternating bit' protocol lecture was just discussing the solution to the problem itself. Having watched all the lectures I still don't know what I would use any of this topic for. Also couldn't get the 'alternating bit protocol' software to work, just crashed on my osx laptop.

I would love to do a class on system validation, Coq, TLA+, etc. are all interesting topics to me, I just want a class that helps me do those things.

創建者 Sander W

Jan 27, 2020

Very nice course to learn about behavioural equivalance. Sometimes it was kinda hard to keep track of the different types of bisimulation. A 5 min recap/summarization video about weak/strong/branching/rooted/divergence bisimulation would have made it perfect for me.

創建者 Marcelo N T

Oct 19, 2016

Very interesting and a good fine-tuning experience to my brain relating to systems! Awesome!

創建者 Carlos D N D

Dec 14, 2016

Although superficial, it is a very good MOOC for introducing LTS testing.

創建者 acepasag

Oct 14, 2016

I've learn more thing's in this course..., thank you Coursera :) :) :)

創建者 Emmanuel S d L C

May 15, 2017

Thanks! Very well done for an introductory course.

創建者 Dongdong A

Feb 20, 2018

Very helpful for me to learn about the automata

創建者 Letícia G

Apr 12, 2018

Very helpful! Thank you very much!

創建者 Eric L

Dec 01, 2016

Useful introduction.

創建者 Nikhil m

May 10, 2020

ITS REALLY USEFUL

創建者 POTTI R G

Nov 05, 2019

Very Good Subject

創建者 Ruslaan B A G

Aug 05, 2019

Useful knowledge

創建者 Nafees M

May 08, 2017

thx a lot prof.

創建者 Hafiz A Q

May 05, 2020

It was amazing

創建者 Paul J R T P

Oct 22, 2016

very helpful

創建者 Brandon J T A

Jan 25, 2020

Very nice!

創建者 Mykola D

Mar 11, 2017

I really like the subject of the course. The presentation was really good. However, some of the concepts were not so easy to understand. The course does not provide any reading, so I had to watch the lectures again if I forget some of the details. Eventually I've started taking detailed notes and added screenshots to my notebook. I wish I could have more exercises just for practice that would not be graded. That would provide a safe env. to learn and practice before taking final tests. Some of the answers to exercises were very helpful to learn the concepts better. So, more such practical exercises would be helpful.

創建者 delfieu d

Apr 04, 2019

I have appreciated the pedagogic presentation. Some concepts, quite well introduced by examples, would have deserved to have their formal definitions presented.

創建者 Muhammad A J

May 10, 2020

Good to learn new things. the recorded sound quality is not too clear. However I managed to learn from the professor a lot.

創建者 Emmanuel D

Dec 05, 2017

A very good introduction for model checking. I had some knownledge and it was very good refresh.

創建者 Roger.Qea

Jul 16, 2017

It will be better if these materials could be summarized into a table at the end of the course.

創建者 项超

Nov 05, 2018

good, some parts is not clear enough. Better learn with the recommend textbook