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

Explain in detail about functional modelling, Explain in detail about Funct...

Explain in detail about Functional Modelling. This model explains the computations that take place within a system. This model is useful when the transformation from t

Joomla, want to learn joomla

want to learn joomla

Diff. b/w IT & CSE TRADE, Hello I want to know the actual difference b/w in...

Hello I want to know the actual difference b/w information technology & computer science & engineering ? Thanks

Define software testing, Q. Define software testing. Explain various level ...

Q. Define software testing. Explain various level of testing? Ans: Software testing- It is a process used to help identify the completeness, correctness and quality of develo

Name the commonly used architectural styles, Name the commonly used archite...

Name the commonly used architectural styles. i. Data centered architecture. ii. Data flow architecture. iii. Call and return architecture.

Waterfall model is more advantageous than adhoc methods, Explain why waterf...

Explain why waterfall model is more advantageous than adhoc methods.      Ad-hoc Process Models- "Process capability is unpredictable due to the software process is constantly

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

The functional requirement for a library management system, Describe the fu...

Describe the functional requirement for a Library management system ?

Explain about virtual memory, Explain about Virtual memory Virtual memo...

Explain about Virtual memory Virtual memory is a method used in some large computer that permit the user to construct programs as by a large memory space were available, equal

What is constructive cost model, Q. What is Constructive Cost Model? CO...

Q. What is Constructive Cost Model? COCOMO model denotes Constructive Cost Model. It is an empirical model basis on project experience. It is well-documented and independent mo

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