This paper examines an inconsistency in generic ’top-down’ design methods and standards employed in the implementation of reliable software. Many design approaches adopt top-down ordering when defining the structure, interfaces, and processing of a system. However, strict adherence to a top-down sequencing does not permit accurate description of a system’s error handling functions. The design o...

The Fault-Tolerance Latency (FTL) deened as the time required by all sequential steps taken to recover from an error is important to the design and evaluation of fault-tolerant computers used in safety-critical real-time control systems. To meet timing constraints or avoid dynamic failure, the latency of any fault-handling policy | that consists of several stages like error detection, fault loc...

C does not have exception handling facilities. Errors are handled by examining the value returned by each function and signals (conditions reported to the program) are handled by using library functions. These approaches lead to ad hoc error-handling techniques and can make programs hard to understand. Exceptional C, a superset of C, provides exception handling facilities. Exceptional C integra...

OpenMP lacks essential features for developing mission-critical software. In particular, it has no support for detecting and handling errors or even a concept of them. In this paper, the OpenMP Error Model Subcommittee reports on solutions under consideration for this major omission. We identify issues with the current OpenMP specification and propose a path to extend OpenMP with error-handling...

While distributed computing is becoming more and more mainstream, it becomes apparent that error handling is an aspect that deserves more attention. We place ourselves in the context of distributed objects, and we try to hide the network behind the usual remote method call semantic. More precisely, we concentrate on the case where method calls are asynchronous, which complicates the error handl...

This paper presents POSTAG 1 as a statistical/rule-based hybrid part-of-speech (POS) tagging system with generalized unknown-word handling. The POSTAG integrates morphological analysis with statistical POS disambigua-tion and post rule-based error-correction. The error-correction rules are automatically learned from a tagged corpus and selectively correct standard HMM tagging errors. The morpho...

Exception handling is a powerful abstraction that can be used to help manage errors and support the construction of reliable operating systems. Using exceptions to notify system components about exceptional conditions also reduces coupling of error handling code and increases the modularity of the system. We explore the benefits of incorporating exception handling into the Choices operating sys...

Exception systems have become popular because they uncouple error detection and handling thus allowing us to produce better software. However, the exception handling systems of many object-oriented languages benefit very little from object-oriented programming. The catch clauses following a try block are isolated pieces of code: they do not belong to classes and cannot be reused. This paper pre...

Making a program robust is often a recipe for making it ugly: the core logic becomes hopelessly entwined with error handling, and quickly dwarfed by it. The concerns are hard to separate, since error checking may depend on earlier bits of core logic, and the core logic may assume error-free input. In this pearl we show, through two distinct but related examples, how to wield first-class control...

background: the aim of the article is demonstrating an application of multiple imputation (mi) for handling missing clinical data in the setting of rheumatologic surveys using data derived from 10291 people participating in the first phase of the community oriented program for control of rheumatic disorders (copcord) in iran . methods: five data subsets were produced from the original data set....