A Fuzzy Approach for Component Selection amongst Different Versions of Alternatives for a Fault Tolerant Modular Software System under Recovery Block Scheme Incorporating Build-or-Buy Strategy

Abstract

Software projects generally have to deal with producing and managing large and complex software products. As the functionality of computer operations become more essential and yet more critical, there is a great need for the development of modular software system. Component-Based Software Engineering concerned with composing, selecting and designing components to satisfy a set of requirements while minimizing cost and maximizing reliability of the software system. This paper discusses the fuzzy approach for component selection using "Build-or-Buy" strategy in designing a software structure. We introduce a framework that helps developers to decide whether to buy or build components. In case a commercial off-the-shelf (COTS) component is selected then different versions are available for each alternative of a module and only one version will be selected. If a component is an in-house built component, then the alternative of a module is selected. Numerical illustrations are provided to demonstrate the model developed.

Multi Objective Optimization Model using Preemptive Goal Programming for Software Component Selection

“…Two Multiobjective Models were proposed by Jha et al in [11], in the first one the objective is to maximize the reliability and minimize the overall cost with the multiple constraints like either the component can be build or purchased, redundancy constraints, delivery time constraints & probability of failure free in house component to be delivered. In the second optimization model, additional constraints are introduced to represent the compatibility among the alternatives of the components, but the objective is the same.…”