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Model and Information Abstracion for Description—Driver Systems

International Conference on Computing in High Energy and Nuclear Physics 2001年第1期 540-543页

作者： FloridaEstrella zsoltkovacs 等 CentreforcomplexCooperativeSystems UWEFrenchayBristolBS161QYUK EPdivision CERNGenevaSwitzerland

A Crucial factor in the creation of adaptable systems dealing with changing requirements is the suitability of the underlying technology in allowing the evolution of the system.A reflective system utilizes an open architecture where implicit system aspects are reified to become explicit first-class(meta-data)*** implicit system aspects are often fundamental structures which are inaccessible and immutable,and theri reification as meta-data objects can serve as the basis for changes and extensions to the system, making it *** address the evolvability issue,this paper proposes a reflective architecture based on two orthogonal abstractions-model abstraction and information *** this architecture the modeling abstractions allow for the separation of the description meta-data from the system aspects they represent so that they can be managed and versioned independently,asynchronously and explicitly.

关键词：信息处理驱动系统四层模型结构

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Querying Large Physics Data Sets Over an Information Grid

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International Conference on Computing in High Energy and Nuclear Physics 2001年第1期 663-667页

作者： NigelBaker zsoltkovacs 等 CentreforComplexCooperativeSystems UWEFrenchayBristolBS161QYUK EPDivision CERNGenevaSwitzerland

Optimising use of the Web(WWW) for LHC data analysis is a complex problem and illustrates the challenges arising from the integration of and computation across massive ampunts of information distributed *** the right piece of information can,at times,be extremely time-consuming,if not impossible,SO-called Grids have been proposed to facilitate LHC computing and many groups have embarked on studies of data replication,data migration and netwroking *** aspects such as the role of moddleware' for Grids are emerging as requiring *** paper positions the need for appropriate middleware that enables users to resolve physics queries across massive data *** identifies the role of meta-data for query resolution and the importance of Information Grids for high-energy physics analysis rather than just computational or Data Grids,This paper identifies software that is being implemented at CERN to enable the querying of very large collaborating HEP data-sets,initially being employed for the construction of CMS detectors.

关键词：高能物理物理数据库信息网络

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