Modeling method for software reliability growth model based on novel environmental factor function

A technology of environmental factors and modeling methods, applied in the field of software reliability growth model modeling, can solve the problems of complex mathematical processing of Logistic curves, large fitting and prediction errors, etc., and achieve easy handling, predictive reliability, and high estimation The effect of precision

Inactive Publication Date: 2012-06-20
HARBIN ENG UNIV
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Problems solved by technology

[0010] The purpose of the present invention is to consider the difference between the test environment and the operating environment, solve the problem of complex mathematical proces

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  • Modeling method for software reliability growth model based on novel environmental factor function
  • Modeling method for software reliability growth model based on novel environmental factor function
  • Modeling method for software reliability growth model based on novel environmental factor function

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Embodiment Construction

[0032] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0033] The new environmental factor function proposed by the invention changes with time, and a method for establishing a software reliability growth model in the running stage. Using the NHPP software reliability model assumption, estimate the parameters of each model on the existing failure data, calculate the fitting error, select the best fitting model in the testing stage, and then fit the environmental factors according to the empirical data, and propose a A new environmental factor in the form of a time-varying function, the fault detection rate in the operation phase is obtained through the environmental factor and the fault detection rate in the test phase, and a software reliability model based on the environmental factor of the new time function is established to achieve better reliability. Sexual fitting and predictive ability, with high f...

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Abstract

The invention discloses a modeling method for a software reliability growth model based on a novel environmental factor function. The modeling method solves the problem of high fitting and prediction errors due to complicated processing of Logistic curve mathematics, NHPP (non-homogenous Poisson process) software reliability models are adopted, parameters of each model are estimated on the basis of existing failure data, fitting errors are computed, an optimal fitting model at a testing stage is selected, then environmental factors are fit according to empirical data, the novel time-varying environmental factor function is provided, fault detection rate at a running stage is obtained by the aid of the environmental factors and fault detection rate of the testing stage, and the software reliability growth model based on the environmental factors of the novel time function is built. The model built by the aid of the modeling method has high estimation precision and practicality, reliability of a software system can be well predicted, and the problem of high fitting and prediction errors due to complicated processing of Logistic curve mathematics is solved.

Description

technical field [0001] The invention relates to the research field of software reliability models, in particular, considering the difference between testing and operating environments, and proposes a modeling method for software reliability growth models based on new environmental factor functions. Background technique [0002] With the expansion of software application fields and the further improvement of functional requirements, the scale of software systems is increasing day by day, and the proportion of functions realized by software in computer systems is increasing rapidly. The reliability of software has become one of the focuses of people's attention. How to accurately measure and predict the reliability of software systems is a hot spot in the field of software reliability research. Software reliability modeling is the basis of software reliability engineering. It aims to give the estimated value or predicted value of software reliability in a statistical way based...

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Application Information

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IPC IPC(8): G06F11/36
Inventor 高峰闫雪丽李一晨刘厂沈志峰
Owner HARBIN ENG UNIV
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