<i>Arc</i> - An OAI Service Provider for Digital Library Federation

Liu, Xiaoming; Maly, Kurt; Zubair, Mohammad; Nelson, Michael L.

doi:10.1045/april2001-liu

Cited by 39 publications

(25 citation statements)

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“…At a low number of archives, say <50,000, these optimizations don't affect the user's perception of the search. Liu et al (2001) note, "The effort of maintaining a quality federation service is highly dependent on the quality of the data providers." They mention four problems:…”

Section: Searching and Other Services In Dlharvestmentioning

confidence: 99%

Open Access Federation for Library and Information Science

Coleman¹,

Roback²

2005

D-Lib Magazine

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Selfarchiving, the practice of depositing one's works in an OAIcompliant archive, is a key strategy for innovating scholarly communication and achieving open access. DLHarvest, a subject service for Library and Information (LIS), based on the aggregation of OAIPMH compliant metadata from both institutional and disciplinary digital repositories, including dLIST, is described. Additionally, results from two studies that explored LIS journal publishers' stances towards selfarchiving as expressed in copyright transfer agreements (CTAs) and the scholarly communication behaviors of LIS scholars, with regard to selfarchiving and searching, are presented and some implications for the development of federated subject services are highlighted

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Section: Searching and Other Services In Dlharvestmentioning

confidence: 99%

Open Access Federation for Library and Information Science

Coleman¹,

Roback²

2005

D-Lib Magazine

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“…Do ponto de vista de um usuário acadêmico ou pesquisador, o interessante e confortável seria poder submeter sua necessidade de informação e interagir com uma única interface e ter retornadas informações de diferentes fontes, de forma consolidada. Este é um tema que, sob diferentes denominações, está sendo cada vez mais discutido: digital libraries federation e distributed archives (Liu, 2001), confederated digital libraries (Leiner, 1998), distributed subject gateways (IMesh, 1999), networked digital library (Davis, 1995), multiple information sources (Paepcke, 2000) crosssearching, heterogeneous distributed databases, metasearches (Gravano, 1996) Na primeira alternativa, a interface de busca distribui a consulta (broadcast search) a diferentes sites, segundo um protocolo padrão, identificados pela interface como capazes de fornecer respostas satisfatórias, e os resultados são consolidados e integrados. Exemplo típico desta alternativa é o conhecido protocolo Z39.50, usado para proporcionar interoperabilidade entre catálogos automatizados de bibliotecas.…”

Section: O Problema Da Interoperabilidadeunclassified

“…Vantagens deste esquema são as seguintes: novos provedores de dados podem ser acrescentados, desde que sejam aderentes ao padrão utilizado; melhor desempenho em função de a consulta ser na base de metadados local do provedor de serviços. Desvantagens: manutenção pelo provedor de dados da base comum de metadados; necessidade de sincronização entre os dados armazenados nos provedores de dados e os metadados coletados pelo provedor de serviços (Liu, 2001 …”

Section: O Problema Da Interoperabilidadeunclassified

Integração e interoperabilidade no acesso a recursos informacionais eletrônicos em C&T: a proposta da Biblioteca Digital Brasileira

Marcondes

Sayão

2001

Ci. Inf.

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“…[TAKE IN FIGURE 4] [TAKE IN FIGURE 5] One interesting feature now offered by the OAI-PMH version of NTRS is that of "hierarchical harvesting" of the kind first introduced by Arc (Liu, Maly, Zubair & Nelson, 2001). Hierarchical harvesting is gaining popularity as OAI-PMH aggregators harvest metadata from data providers and re-expose the metadata to other harvesters, perhaps with some metadata normalization or cleansing.…”

Section: An Oai-pmh Version Of Ntrsmentioning

confidence: 99%

OAI and NASA’s scientific and technical information

2003

Self Cite

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The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously, "distributed searching" models were popular for DL interoperability. However, experience has shown distributed searching systems across large numbers of DLs to be difficult to maintain in an Internet environment. The OAI-PMH is a move away from distributed searching, focusing on the arguably simpler model of "metadata harvesting". We detail NASA's involvement in defining and testing the OAI-PMH and experience to date with adapting existing NASA distributed searching DLs (such as the NASA Technical Report Server) to use the OAI-PMH and metadata harvesting. We discuss some of the entirely new DL projects that the OAI-PMH has made possible, such as the Technical Report Interchange project. We explain the strategic importance of the OAI-PMH to the mission of NASA's Scientific and Technical Information Program. OAI and NASA's Scientific and Technical Information AbstractThe Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously, "distributed searching" models were popular for DL interoperability. However, experience has shown distributed searching systems across large numbers of DLs to be difficult to maintain in an Internet environment. The OAI-PMH is a move away from distributed searching, focusing on the arguably simpler model of "metadata harvesting". We detail NASA's involvement in defining and testing the OAI-PMH and experience to date with adapting existing NASA distributed searching DLs (such as the NASA Technical Report Server) to use the OAI-PMH and metadata harvesting. We discuss some of the entirely new DL projects that the OAI-PMH has made possible, such as the Technical Report Interchange project. We explain the strategic importance of the OAI-PMH to the mission of NASA's Scientific and Technical Information Program.

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Arc - An OAI Service Provider for Digital Library Federation

Cited by 39 publications

References 0 publications

Open Access Federation for Library and Information Science

Open Access Federation for Library and Information Science

Integração e interoperabilidade no acesso a recursos informacionais eletrônicos em C&T: a proposta da Biblioteca Digital Brasileira

OAI and NASA’s scientific and technical information

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