Amrit L. Goel

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A number of analytical models have been proposed during the past 15 years for assessing the reliability of a software system. In this paper we present an overview of the key modeling approaches, provide a critical analysis of the underlying assumptions, and assess the limitations and applicability of these models during the software development cycle. We(More)
ÐMany empirical studies in software engineering involve relationships between various process and product characteristics derived via linear regression analysis. In this paper, we propose an alternative modeling approach using Radial Basis Functions (RBFs) which provide a flexible way to generalize linear regression function. Further, RBF models possess(More)
This paper presents an analysis of actual software error data from a large-scale software project using the imperfect debugging model proposed by Goel and Okumoto [1]. The model parameters are estimated from the actual data and the values predicted from the model are compared with the observed values. Joint confidence regions for the parameters are also(More)
This paper presents a novel approach for developing simulation metamodels using Gaussian radial basis functions. This approach is based on some recently developed mathematical results for radial basis functions. It is systematic, explicitly controls the underfitting and overfitting tradeoff, and uses a fast computational algorithm that requires minimal(More)