HR: 1330h
AN: ED32C-1203    [PDF]
TI: Community Digital Library Requirements for the Southern California Earthquake Center Community Modeling Environment (SCEC/CME)
AU: * Moore, R
EM: moore@sdsc.edu
AF: San Diego Supercomputer Center, UC San Diego, MC 0505 9500 Gilman Drive, La Jolla, CA 92093-0505 United States
AU: Faerman, M
EM: mfaerman@sdsc.edu
AF: San Diego Supercomputer Center, UC San Diego, MC 0505 9500 Gilman Drive, La Jolla, CA 92093-0505 United States
AU: Minster, J
EM: jbminster@ucsd.edu
AF: University of California, San Diego, IGPP Rm 2210 Scripps Institution of Oceanography 8765 Biological Grade, EAMS Code 6317, La Jolla, CA 92037 United States
AU: Day, S M
EM: day@moho.sdsu.edu
AF: San Diego State University, Dept. Geological Sciences MC-1020 5500 Campanile Dr. SDSU, San Diego, CA 92182-1020 United States
AU: Ely, G
EM: gely@ucsd.edu
AF: University of California, San Diego, IGPP Rm 2210 Scripps Institution of Oceanography 8765 Biological Grade, EAMS Code 6317, La Jolla, CA 92037 United States
AB: A community digital library provides support for ingestion, organization, description, preservation, and access of digital entities. The technologies that traditionally provide these capabilities are digital libraries (ingestion, organization, description), persistent archives (preservation) and data grids (access). We present a design for the SCEC community digital library that incorporates aspects of all three systems. Multiple groups have created integrated environments that sustain large-scale scientific data collections. By examining these projects, the following stages of implementation can be identified: \begin{itemize} \item Definition of semantic terms to associate with relevant information. This includes definition of uniform content descriptors to describe physical quantities relevant to the scientific discipline, and creation of concept spaces to define how the uniform content descriptors are logically related. \item Organization of digital entities into logical collections that make it simple to browse and manage related material. \item Definition of services that are used to access and manipulate material in the collection. \item Creation of a preservation environment for the long-term management of the collection. \end{itemize} Each community is faced with heterogeneity that is introduced when data is distributed across multiple sites, or when multiple sets of collection semantics are used, and or when multiple scientific sub-disciplines are federated. We will present the relevant standards that simplify the implementation of the SCEC community library, the resource requirements for different types of data sets that drive the implementation, and the digital library processes that the SCEC community library will support. The SCEC community library can be viewed as the set of processing steps that are required to build the appropriate SCEC reference data sets (SCEC approved encoding format, SCEC approved descriptive metadata, SCEC approved collection organization, and SCEC managed storage location). Each digital entity that is ingested into the SCEC community library is processed and validated for conformance to SCEC standards. These steps generate provenance, descriptive, administrative, structural, and behavioral metadata. Using data grid technology, the descriptive metadata can be registered onto a logical name space that is controlled and managed by the SCEC digital library. A version of the SCEC community digital library is being implemented in the Storage Resource Broker. The SRB system provides almost all the features enumerated above. The peer-to-peer federation of metadata catalogs is planned for release in September, 2003. The SRB system is in production use in multiple projects, from high-energy physics, to astronomy, to earth systems science, to bio-informatics. The SCEC community library will be based on the definition of standard metadata attributes, the creation of logical collections within the SRB, the creation of access services, and the demonstration of a preservation environment. The use of the SRB for the SCEC digital library will sustain the expected collection size and collection capabilities.
UR: http://www.sdsc.edu/SCEC/AGU
DE: 0902 Computational methods, seismic
DE: 0910 Data processing
DE: 0935 Seismic methods (3025)
DE: 0994 Instruments and techniques
DE: 9820 Techniques applicable in three or more fields
SC: Education and Human Resources [ED]
MN: 2003 Fall Meeting