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Ontology is an explicit formal sharing conceptualization of one domain. Ontology maintenance is one of most important work during ontologypsilas development lifecycle. Cycle of concepts is one of the most common inconsistency errors in ontology. In this paper, we propose a method of eliminating direct super-class to detect cycle of concepts (EDS2DCC). This method firstly constructs oriented graphs...
Action grammar is a grammar with action symbols appearing in the right part of production rules, which can be used to implement semantic analyzer automatically. An action symbol represents the name of a semantic routine. Implementation of action grammar relies on specific parsing methods, such as LL(K), recursive-descent or LR, and so on. However, these parsing methods have their own restrictions...
Ontology mapping is a core task to achieve interoperability among the distributed and heterogeneous ontologies. The quality of ontology mapping is still not good due to the inconsideration of semantic information of the ontology. This paper proposes an ontology mapping method based on tree segmentation. It first divides the ontology into a set of sub-trees with different granularities according to...
Block memory or custom memory is one of the most important features in the Structured ASIC design. But block RAM is not suitable to form small memory array and also limited to the pre-defined location. On the other hand, the distributed memory is one of the most important features in FPGA to support small size memory application and available anywhere across the chip. But the distributed memory is...
Testing and diagnosis techniques play a key role in the advance of semiconductor memory technologies. The challenge of failure detection has attracted investigation on efficient testing and diagnosis algorithm for better fault coverage and diagnostic resolution. March algorithms are widely used in SRAM testing to detect and diagnose SRAM fault model since they are relatively simple and yet providing...
We present and validate an enhanced analytical queueing network model of zoned RAID. The model focuses on RAID levels 01 and 5, and yields the distribution of I/O request response time. Whereas our previous work could only support arrival streams of I/O requests of the same type, the model presented here supports heterogeneous streams with a mixture of read and write requests. This improved realism...
We evaluate the reliability of storage system schemes consisting of an equal numbers of data disks and parity disks where each parity disk contains the exclusive or (XOR) of two or three of the data disks. These schemes are instances of Survivable Storage using Parity in Redundant Array Layouts (SSPiRAL). They have the same storage costs as mirrored organizations and use very simple parity schemes...
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