Most Model-based diagnosis frameworks rely on incremental probing and the assumption that faults occur independently to infer the most likely explanation for a symptom. For systems where additional sensors are unavailable or a repair action must be issued at once, these assumptions are often inadequate and dependent faults must be considered explicitly. We introduce explicit models of context-d...

Mortality data of disabled individuals are studied and parametric modeling approaches for the force of mortality are discussed. Empirical observations show that the duration since disablement has a strong effect on mortality rates. In order to incorporate duration effects, different generalizations of the Lee–Carter model are proposed. For each proposed model, uniqueness properties and fitting ...

In the second half of the last century we have observed a shift in focus from power studies to outcome oriented studies. In the original power studies, power indicators were not derived from a model of the influence process, but defined in a broader theoretical context. Examples are the classical local power studies of Hunter (1953) and Dahl (1961), where different measurement procedures result...

We propose a portfolio credit risk model with dependent loss given default (LGD) which allows for a reasonable economic interpretation and can easily be applied to real data. We build up a precise mathematical framework and stress some general important issues when modeling dependent LGD. Finally, we calibrate the model based on American bond data from 1982 to 2001 and compare the results with ...

In this paper a practical method for tropospheric effects on GPS derived coordinates in absolute mode is presented. GPS observations at the permanent GPS stations can be used as source of information for the modeling. The developed model is a time-dependent model and as such differs from usual tropospheric models, which are based on atmospheric parameters, i.e. temperature, pressure and humidit...