Explain basic execution time model, Software Engineering

Assignment Help:

Q. Explain Basic Execution Time Model?

The model was developed by the J.D. MUSA in 1979(MUSA79) and is based on execution time. It is presumed that failures may occur according to a non-homogeneous Poisson Process (NHPP) Real world events may be described using Poisson processes. Instance of Poisson processes are

- A Number of telephone calls expected in a given period of time

- Expected figure of road accidents in a given period of time

- Expected figure of persons visiting in a shopping mall in a given period of time.

In this model the reduce in failure intensity as a function of the number of failures observed is constant and is given as:

288_Explain Basic Execution Time Model.png

Where Initial failure intensity at the start of execution.

V0 Number of failures experienced, if program is executed for Infinite time period μ Average as well expected number of failures experienced at a given point in time. These models imply a uniform operational profile. If every input class are selected equally often the various faults have an equal probability of manifesting themselves. The correction of whichever of those faults then contributes an equal decrease in the failure intensity. The negative sign publicized that there is a negative slope meaning thereby a decrementing trend in failure intensity.


Related Discussions:- Explain basic execution time model

How do stubs and drivers are related to manual testing, How do stubs and dr...

How do stubs and drivers are related to manual testing? - Drivers and stubs are a part of incremental testing. - The two different techniques used in incremental testing are

Compare the productivity and difficulty, Q. Compare the Productivity and di...

Q. Compare the Productivity and difficulty? Productivity refers to metrics as well as measures of output from production processes per unit of input. Productivity P perhaps c

Describe various types of cohesion, Describe various types of Cohesion? ...

Describe various types of Cohesion? i. Coincidentally cohesive -The modules in which the set I\of tasks are linked with each other loosely then these modules are called coincid

State the term- code coverage, State the term- Code Coverage This is a...

State the term- Code Coverage This is an analysis method that determines which parts of software have already been covered by test case suite and which are remaining.

Define maintenance, Define maintenance. Maintenance is explained as the...

Define maintenance. Maintenance is explained as the process in which changes are executed by either modifying the existing system's architecture or by adding latest components

What is test data generators, Q. What is Test data generators? This is...

Q. What is Test data generators? This is a difficult one as well as at least for the present is one for which no general solution exists. One of the practical problems with te

What are the testing principles of software testing, What are the testing p...

What are the testing principles the software engineer must apply whereas performing the software testing? i. All tests should be traceable to customer requirements. ii. Test

State both verification and validation, Define Verification &Validation. ...

Define Verification &Validation. Verification : The set of actions that make sure software correctly implements a particular function. Validation : The set of actions that

Activity and use case diagram, The Application You should develop your p...

The Application You should develop your program using incremental development. Develop your program a little bit at a time and keep testing it. Save a working version before mak

Advantage of using prototype software development model, What is the advant...

What is the advantage of using prototype software development model instead of waterfall model? The waterfall model: This is the classic SDLC model, with a sequential and line

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd