What is a robustness diagram?

A robustness diagram is basically a simplified UML communication/collaboration diagram which uses the graphical symbols depicted in Figure 1. As you can see robustness diagrams depict several types of concepts: Actors. This is the same concept as actors on a UML use case diagram.

What is a robustness analysis?

Robustness analysis provides an approach to the structuring of problem situations in which uncertainty is high, and where decisions can or must be staged sequentially. The specific focus of robustness analysis is on how the distinction between decisions and plans can be exploited to maintain flexibility.

What is sequence diagram focuses on?

Sequence Diagrams are time focus and they show the order of the interaction visually by using the vertical axis of the diagram to represent time what messages are sent and when.

How do you test for robustness?

Fault injection is a testing method that can be used for checking robustness of systems. They inject fault into system and observe system’s resilient. In the authors worked on an efficient method which aid fault injection to find critical faults that can fail the system.

What is robustness in hypothesis testing?

In statistics, the term robust or robustness refers to the strength of a statistical model, tests, and procedures according to the specific conditions of the statistical analysis a study hopes to achieve. In other words, a robust statistic is resistant to errors in the results.

How do you calculate robustness?

Consequently, the calculation of robustness using a particular metric corresponds to the transformation of the performance of a set of decision alternatives over different scenarios, f(xi, S) = {f(xi, s1), f(xi, s2), …, f(xi, sn)} to the robustness R(xi, S) of these decision alternatives over this set of scenarios.

How do you do a robustness test?

What is dotted line in sequence diagram?

Solid arrow heads represent synchronous calls, open arrow heads represent asynchronous messages, and dashed lines represent reply messages. If a caller sends a synchronous message, it must wait until the message is done, such as invoking a subroutine.

What are the three fundamental elements of the sequence diagram?

Basic Sequence Diagram Notations

Class Roles or Participants. Class roles describe the way an object will behave in context.
Activation or Execution Occurrence. Activation boxes represent the time an object needs to complete a task.
Messages.
Lifelines.
Destroying Objects.
Loops.
Synchronous Message.
Asynchronous Message.

What is the purpose of robustness testing?

Robust testing is about improving reliability and finding those corner cases by inputting data that mimics extreme environmental conditions to help determine whether or not the system is robust enough to deliver. Testing robustness is more focused than dependability benchmarking.

For supporting robustness analysis, they use robustness diagrams. This is a nonstandard diagram type in the manner that it is not described by the UML specification, however, it uses UML concepts. It is a specialized communication diagram that uses stereotyped objects. These stereotypes are defined in UML: boundary .

How do you perform robustness analysis for a use case?

You perform robustness analysis for a use case by walking through the use case text. One sentence at a time, and drawing the actors, the appropriate boundary, entity objects and controllers, and the connections among the various elements of the diagram. You should be able to fit the basic course and all of the alternate courses on one diagram.

What are the different types of robustness analysis in UML?

These are classified into boundary objects, entity objects, and controllers. Robustness analysis, which is an informal diagram in UML, was part of Jacobson’s Objectory method. It is similar to a UML collaboration diagram, in that it shows the objects that participate in the scenario and how those objects interact with each other.

What is robustness analysis in MVC?

Robustness analysis helps you to bridge the gap from Use Cases and Domain Classes, and the model-view-control (MVC) software architecture. In a nutshell, it’s a way of analyzing your use case model and identifying the first-guess set of objects for each use case. These are classified into boundary objects, entity objects, and controllers.