Wide Area Information Servers: An Executive Information System for Unstructured Files

Kahle, Brewster; Morris, Harry; Davis, Franklin A.; Tiene, Kevin; Hart, Clare; Palmer, Robin

doi:10.1108/eb047255

Cited by 30 publications

(8 citation statements)

References 2 publications

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“…However, it was not until 1995 that the NASA Technical Report Server (NTRS; http://ntrs.nasa.gov/) was established to provide integrated searching between the various NASA web-based DLs [2]. It offered distributed searching, mostly through the WAIS protocol [3], of up to 20 different NASA centers, institutes and projects. While NTRS was very successful for both NASA and the public, the distributed searching approach proved fragile.…”

Section: Introductionmentioning

confidence: 99%

User evaluation of the NASA technical report server recommendation service

Nelson

Bollen

Calhoun

et al. 2004

Proceedings of the 6th Annual ACM International Workshop on Web Information and Data Management

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We present the user evaluation of two recommendation server methodologies implemented for the NASA Technical Report Server (NTRS).One methodology for generating recommendations uses log analysis to identify co-retrieval events on full-text documents. For comparison, we used the Vector Space Model (VSM) as the second methodology. We calculated cosine similarities and used the top 10 most similar documents (based on metadata) as "recommendations". We then ran an experiment with NASA Langley Research Center (LaRC) staff members to gather their feedback on which method produced the most "quality" recommendations. We found that in most cases VSM outperformed log analysis of co-retrievals. However, analyzing the data revealed the evaluations may have been structurally biased in favor of the VSM generated recommendations. We explore some possible methods for combining log analysis and VSM generated recommendations and suggest areas of future work.

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Section: Introductionmentioning

confidence: 99%

User evaluation of the NASA technical report server recommendation service

Nelson

Bollen

Calhoun

et al. 2004

Proceedings of the 6th Annual ACM International Workshop on Web Information and Data Management

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“…Use of the client-server model allows a variety of platforms to interoperate in a distributed fashion. Existing information retrieval systems such as archie (Deutsch, 1992), Gopher (Alberti et al, 1992), Prospero (Neumann, 1992) and WAIS (Kahle et al, 1992;Stein, 1991) make use of client-server protocols over wide-area Internet but lack hypertext functionality (with the exception of the WorldWideWeb project (Bemers-Lee et al, 1992)). …”

Section: Down To Earthmentioning

confidence: 98%

The Architecture of a Massively Distributed Hypermedia System

Kappe¹,

Pani²,

Schnabel³

1993

Internet Research

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Proposes how a global Hypermedia system could evolve from the “Hyper‐G” system, currently being developed at Graz University. Overviews the development of Internet from post‐war visionary speculation to present. Explains some limitations of the current architecture (World Wide Web, Gopher, WAIS). Presents in detail the architecture of a massively distributed hypermedia system. Explains how the proposed system would be much faster, overcoming such problems as documents being oriented by location rather than by subject. Suggests possible applications.

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“…17 of the nodes support different versions of WAIS and the three nodes from the Astrophysics Data Service utilize a non-WAIS version of Z39.50 (Kurtz et al, 1999). Popular in the early days of the WWW, WAIS (Kahle et al, 1992) is an Internet based subset of the venerable Z39.50 standard for distributed information retrieval (Lynch, 1997).…”

Section: Nasa DL Historymentioning

confidence: 99%

OAI and NASA’s scientific and technical information

2003

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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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Wide Area Information Servers: An Executive Information System for Unstructured Files

Cited by 30 publications

References 2 publications

User evaluation of the NASA technical report server recommendation service

User evaluation of the NASA technical report server recommendation service

The Architecture of a Massively Distributed Hypermedia System

OAI and NASA’s scientific and technical information

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