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Triple modular redundancy (TMR) is a well-known technique for building fault-tolerant systems. In TMR, a module unit is triplicated, and the outputs of these three units are compared by a voter. In this paper we consider systems that consist of multiple TMR units in series. Only recently has it been found that even such simple systems can be configured into various structures. We propose (i) a method...
A skip graph is a valuable overlay network for searching for keys in a peer-to-peer application. A problem with the construction algorithm for skip graphs is that it does not consider the proximity of adjacent peers. Because of this, a skip graph often contains links with considerably high communication time. Another problem is that due to the random nature of the algorithm, a skip graph often exhibits...
Testing is an important but expensive part of software development. This paper discusses the minimization of testing cost in the presence of configuration change cost. By configuration change cost we mean the cost of configuration changes that occur in sequential testcase execution - the time and effort incurred in changing the configuration if the execution of two consecutive testcases requires different...
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