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- Xiaoming Liu, Johan Bollen, Michael L. Nelson, Herbert Van de Sompel
- Inf. Process. Manage.
- 2005
The field of digital libraries (DLs) coalesced in 1994: the first digital library conferences were held that year, awareness of the World Wide Web was accelerating, and the National Science… (More)
- Herbert Van de Sompel, Michael L. Nelson, Carl Lagoze, Simeon Warner
- D-Lib Magazine
- 2004
Motivated by preservation and resource discovery, we examine how digital resources, and not just metadata about resources, can be harvested using the Open Archives Initiative Protocol for Metadata… (More)
- Frank McCown, Michael L. Nelson
- JCDL
- 2007
Google, Yahoo and MSN all provide both web user interfaces (WUIs) and application programming interfaces (APIs) to their collections. Whether building collections of resources or studying the search… (More)
The field of digital libraries (DLs) coalesced in 1994: the first digital library conferences were held that year, awareness of the World Wide Web was accelerating, and the National Science… (More)
- Xiaoming Liu, Kurt Maly, Mohammad Zubair, Michael L. Nelson
- JCDL
- 2001
The usefulness of the many on-line journals and scientific digital lib raries that exist today is limited by the lack of a service that can federate them through a unified interface. The Open Archive… (More)
The Web is ephemeral. Many resources have representations that change over time, and many of those representations are lost forever. A lucky few manage to reappear as archived resources that carry… (More)
- Frank McCown, Sheffan Chan, Michael L. Nelson, Johan Bollen
- ArXiv
- 2005
We explore the availability and persistence of URLs cited in articles published in D-Lib Magazine. We extracted 4387 unique URLs referenced in 453 articles published from July 1995 to August 2004.… (More)
- Terry L. Harrison, Michael L. Nelson
- Hypertext
- 2006
We present Opal, a light-weight framework for interactively locating missing web pages (http status code 404). Opal is an example of "in vivo" preservation: harnessing the collective behavior of web… (More)
- Frank McCown, Joan A. Smith, Michael L. Nelson
- WIDM
- 2006
Backup of websites is often not considered until after a catastrophic event has occurred to either the website or its webmaster. We introduce "lazy preservation" -- digital preservation performed as… (More)