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信息网格中具有动态变更适应性的元数据发布策略 被引量：3

An Adaptive Metadata Publishing Policy in Information Grid
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摘要 信息源元数据的动态变更可能造成应用对信息源引用关系不一致 ,在不改应用程序的条件下 ,用户不能正确访问信息源 基于网格地址空间模型 ,使得应用程序通过虚拟层元数据 ,即应用领域元数据 ,来间接使用信息源元数据 ;当信息源元数据变更时 ,不是改应用程序而是通过调整信息源元数据和应用领域元数据之间的映射来保证应用对信息源引用关系的一致性 从元数据发布的角度出发 ,提出了一个具有动态适应性的元数据发布算法 (Vegaadaptivemappingalgorithm ,VAMA) ,通过此算法自动调整信息源元数据和应用领域元数据之间的映射 ;并将此算法相应的方法和现有的元数据发布方法进行了比较 。 Metadata evolution of information sources may make inconsistent applications referring to information sources. Without modifying applications, users may not access information correctly. Based on information grid address space model, the application indirectly employs information source metadata by virtual resource metadata or application field metadata. When information source metadata evolves, the mapping between application field metadata and information source metadata is adjusted to ensure consistent applications referring to information sources without modifying applications. From the aspect of metadata publishing, a Vega adaptive mapping algorithm (VAMA) is put farward to automatically regulate the mapping between application field metadata and information source metadata. Compared with the current methods of metadata publishing, Vama method is better in adapting metadata evolution.
作者 游赣梅 廖华明 李峰
机构地区 中国科学院计算技术研究所软件研究室
出处 《计算机研究与发展》 EI CSCD 北大核心 2003年第12期1791-1795,共5页 Journal of Computer Research and Development
基金 国家自然科学基金委国家杰出青年科学基金 ( 6992 5 2 0 5 ) 国家"八六三"高技术研究发展计划基金 ( 2 0 0 2AA10 43 10 ) 中国科学院海外杰出青年学者基金 ( 2 0 0 14 0 10 ) 郑州铁路局 2 0 0 3年科学技术发展计划基金 ( 0 3S0 8)
关键词 元数据变更 网格地址空间模型 Vega动态适应性映射算法 metadata evolution grid address space model Vega adaptive mapping algorithm
分类号 TP301.6 [自动化与计算机技术—计算机系统结构] TP393 [自动化与计算机技术—计算机应用技术]
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参考文献7

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共引文献43

同被引文献50

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引证文献3

二级引证文献12

计算机研究与发展
2003年 第12期

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