A Service Relevance Based Matching Algorithm on Grid Environment

This paper presents a semantic metadata description model for grid services, and furthermore, a service relevance based matching algorithm is proposed. Some rea sonable parameters interpreting services characterizations are considered to advise matching process, whose weightiness and service relevance dramatically contribute to the decision making of service matching degree, And what＇s more, matching is secondly executed on the bases of experience adaptation of matching factors, which improves matching degree in gird service retrieve greatly.

数字信息资源长期保存元数据技术研究进展

【目的/意义】保存元数据是解决数字信息资源长期保存问题的关键要素,目前对这一领域相关技术的研究进展进行梳理的文章较少、时间也较早,通过重新系统梳理当前研究进展,可以把握研究趋势,为进一步深入研究提供参考。【方法/过程】文章从技术视角出发,围绕保存元数据的生成保存、互操作和语义化,系统梳理了数字信息资源长期保存元数据技术研究进展。【结果/结论】文章指出未来研究将聚焦在保存元数据自动化生成和封装保存研究、保存元数据基于本体的语义层面互操作研究以及保存元数据的多种语义技术融合研究。