[PDF] event b model examples

Event-B Examples
  • 3.1 Code Generation - Shared Buffer Example.
  • 3.2 Well-ordering theorem.
  • 3.3 Development of a flash-based filestore.
  • 3.4 Real-time controller for a water tank.
  • 3.5 UML-B Development of an ATM.
  • 3.6 MIDAS: A Formally Constructed Virtual Machine.
  • 3.7 Development of a Network Topology Discovery Algorithm.
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  • What is a context in Event-B?

    Event-B models are organised in terms of the two basic constructs: contexts and machines.
    Contexts specify the static part of a model whereas machines specify the dynamic part.
    The role of the contexts is to isolate the parameters of a formal model and their properties, which are assumed to hold for all instances.

  • What is Rodin and Event-B?

    The Rodin Platform is an Eclipse-based IDE for Event-B that provides effective support for refinement and mathematical proof.
    The platform is open source, contributes to the Eclipse framework and is further extendable with plugins.

  • What is Event-B in formal methods?

    Event-B is a formal method for system-level modeling and analysis.
    Key features of Event-B are the use of set theory as a modeling notation, the use of re?nement to represent systems at di?erent abstraction levels and the use of mathematical proof to verify consistency between re?nement levels.

  • What is Event-B in formal methods?

    Event-B and Rodin are used for industrial projects and research projects.

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Formal Modelling of Ontologies : An Event-B based Approach Using

An Event-B model is characterised by a set of variables defined in the VARIABLES For example



Events A and B are independent if: knowing whether A occured

Example. Throw 2 dice. A first die lands 1. B second die shows larger number (a) In a fully-specified math model two events are either dependent or.



Chapter 2: Probability

Definition: Let A and B be events on the same sample space: so A ? ? and. B ? ?. The conditional probability of event B given event A



CHAPTER 2 PROBABILITY 2.1 Sample Space 2.2 Events

A probability model consists of the sample space and A ? B is the event containing all elements that are common to A and B. EXAMPLE 2.5.



Chapter 2: Probability

Definition: Let A and B be events on the same sample space: so A ? ? and B ? ?. The conditional probability of event B given event A



Event-B (Using RODIN): First Example

RODIN): First Example. /~gibson/Teaching/CSC4504/Event-B-FirstExample.pdf ... Imagine that we wish to build a context that models family relations.



Bayes Theorem

conditional probability of event B occurring given that event A has already example



Probabilities of outcomes and events

As an example if A is the event that it rains today and B is the event that it models can assign different probabilities to the same set of events.



Topic 1: Basic probability Definition of Sets

(A ? B)c. = Ac ? Bc. ES150 – Harvard SEAS. 3. Elements of probability theory. A probabilistic model includes. • The sample space ? of an experiment.



lelm503.pdf

Hence it represents the sample space of the experiment. 2. Suppose we have to find the conditional probability of an event A if an event. B has already