Baldonado, M. and Chang, C. and Gravano, L. and Paepcke, A. (1997) Metadata for Digital Libraries: Architecture and Design Rationale. In: Second ACM international conference on Digital libraries (DL 1997), July 23 - 26, 1997, Philadelphia, Pennsylvania.
In a distributed, heterogeneous, proxy-based digital library, autonomous services and collections are accessed indirectly via proxies. To facilitate metadata compatibility and interoperability in such a digital library, we have designed a metadata architecture that includes four basic component classes: attribute model proxies, attribute model translators, metadata facilities for search proxies, and metadata repositories. Attribute model proxies elevate both attribute sets and the attributes they define to first-class objects. They also allow relationships among attributes to be captured. Attribute model translators map attributes and attribute values from one attribute model to another (where posMetadata facilities for search proxies provide structured descriptions both of the collections to which the search proxies provide access and of the search capabilities of the proxies. Finally, metadata repositories accumulate selected metadata from local instances of the other three component classes in order to facilitate global metadata queries and local metadata caching. In this paper, we outline further the roles of these component classes, discuss our design rationale, and analyze related work. Keywords: Metadata architecture, interoperability, attribute model, attribute model translation, metadata repository, InfoBus, proxy architecture, heterogeneity, digital libraries, CORBA.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Boolean queries, query translation, cost evaluation, information retrieval, heterogeneity, digital libraries, query subsumption, filtering.|
|Subjects:||Computer Science > Digital Libraries|
|Related URLs:||Project Homepage||http://www-diglib.stanford.edu/diglib/pub/|
|Deposited By:||Import Account|
|Deposited On:||25 Feb 2000 16:00|
|Last Modified:||30 Dec 2008 09:43|
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