A large number of methods like discriminant analysis, logit analysis, recursive partitioning algorithm, etc., have been used in the past for the prediction of business failure. Although some of these methods lead to models with a satisfactory ability to discriminate between healthy and bankrupt ®rms, they su€er from some limitations, often due to the unrealistic assumption of statistical hypoth...

The assumption of ellipsoidal flaw geometry has been widely used in calculations of the probability of structural failure conditioned on nondestructive (ND) measurements. Clearly, in most cases the flaw geometry is not ellipsoidal and in the particular case of cracks the actual geometry may deviate significantly from a degenerate ellipsoid (i.e., a planar crack with an elliptical plan-view shap...

When dealing with dynamically evolving systems, components may be inserted or removed while the system is being operated. Unsafe run-time changes may compromise the correct execution of the entire system, and online analysis techniques have been proposed to mitigate the effects of such failures. With CASSANDRA we want to move one step ahead, by defining a novel proactive monitoring and verifica...

This section involves the application of probabilistic methods to the prediction of failure for materials. Only the most severe and demanding of these types of problems are considered, namely those of creep rupture and fatigue. Most other types of failure problems can be treated without the complications of statistical specification. Before explicitly getting into these “extreme” problems, some...

This study examines the potential of Grammatical Evolution to uncover a series of useful rules which can assist in predicting corporate failure using information drawn from financial statements. A sample of 178 publically quoted, failed and non-failed US firms, drawn from the period 1991 to 2000 are used to train and test the model. The preliminary findings indicate that the methodology has muc...

Background—Heart failure has an annual mortality rate ranging from 5% to 75%. The purpose of the study was to develop and validate a multivariate risk model to predict 1-, 2-, and 3-year survival in heart failure patients with the use of easily obtainable characteristics relating to clinical status, therapy (pharmacological as well as devices), and laboratory parameters. Methods and Results—The...

The purpose of this paper is to discuss recent progress in the development of an NDE decision formalism applied to the case of brittle fracture in ceramics. The on-line input into the formalism is a set of nondestructive (ND) measurements and the on-line output is the probability of failure conditioned on the above measurements. The final accept-reject decision depends only upon the comparison ...

Modern datacenters assemble a very large number of disk drives under a single roof. Even if economic and technical factors where to make individual drives more reliable (which is not at all clear, given the commoditization of the technology), their sheer numbers combined with their ever increasing utilization in a well-balanced design makes achieving storage reliability a major challenge. In th...

Once failures occur in a cloud datacenter accommodating a large number of virtual resources, they tend to spread rapidly and widely, impacting many cloud services and their users. One of the best ways to prevent a failure from spreading in the system is to identify signs of a failure before its occurrence and deal with it proactively before it causes serious problems. Although several approache...

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