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Project Prism

Project Prism. Virtual Remote Control: Preservation Risk Management for Web Resources Nancy Y. McGovern, ECURE 2002. The Project. Project Prism. Part of a 4-year NSF-funded project supported by the Digital Libraries Initiative, Phase 2 (Grant No. IIS-9905955, the Prism Project)

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Project Prism

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  1. Project Prism Virtual Remote Control: Preservation Risk Management for Web Resources Nancy Y. McGovern, ECURE 2002

  2. The Project Project Prism • Part of a 4-year NSF-funded project • supported by the Digital Libraries Initiative, Phase 2 (Grant No. IIS-9905955, the Prism Project) • An umbrella project that includes • Digital Libraries research team (Computer Science) • Human Computer Interface (HCI) • Cornell University Library (CUL) • For updates: • http://www.library.cornell.edu/iris/research/prism/index.html

  3. The Team Project Prism Anne R. Kenney Nancy Y. McGovern Peter Botticelli Richard Entlich William R. Kehoe Carl Lagoze Sandra Payette

  4. Preservation Risk Management Project Prism • Increased reliance by research libraries on Web resources not owned or controlled • Need to monitor and evaluate resources • Identify risks to resources and appropriate responses • Technology introduces new threats, enables new solutions

  5. The Research Agenda Project Prism see, "Preservation Risk Management for Web Resources: Virtual Remote Control in Cornell's Project Prism," by Anne R. Kenney, Nancy Y. McGovern, Peter Botticelli, Richard Entlich, Carl Lagoze, and Sandra Payette in DLib Magazine, January 2002 http://www.dlib.org/dlib/january02/kenney/01kenney.html

  6. The Approach Project Prism • Process • Identification • Analysis • Appraisal • Strategy • Detection • Response

  7. Process Project Prism Adapt the Risk Management Model stages:

  8. Identification Project Prism Establish boundary; Characterize content: example: parse the URL

  9. Analysis Project Prism Define risks associated with: • A Web page: • as a stand-alone object, ignoring its hyperlinks • in local context, considering the internal and external links • A Web site: • as a semantically coherent set of linked Web pages • as an entity in a broader technical and organizational context

  10. Contextual Layers Project Prism

  11. Formatting: TIDY Standards compliance Document structure Metadata: HTTP headers HTML headers Changes Content Location Links Out-link structure In-link structure Intra-site Hub Volatility Page provenance URL parsing Log analysis Page-level Monitoring Project Prism

  12. Site-level Monitoring Project Prism • Graph analysis • Static site analysis and Longitudinal study • Aggregate page analyses • Site maintenance indicators • Backup and archiving policies and procedures • Hardware and software environment • Network configuration and maintenance

  13. Appraisal Project Prism Enable portfolio management: Hypothetical appraisal of a Web resource: Scope: highly relevant Value: high value, not essential; numerous links to page Relationship: secondary archives; informal agreement Maintenance: key indicators of good management Redundancy: captured by more than one archive Risk response: very responsive to risk notifications Capture: complex structure; cyclical updates; formats Size: medium-sized; 3-level crawl

  14. Portfolio Management Project Prism

  15. Strategy Project Prism Develop an organization-specific program:

  16. Detection Project Prism Monitor change; initiate response: Track indicators of management practices: - markup language: version, formatting, compliance - HTTP: status codes, header content - changes: content, location - links: internal, external, volatility - server: security, version, upgrades, responsiveness

  17. Detection (cont.) Project Prism Monitor change; initiate response: Identify potential risks - probable occurrence - frequency of occurrence - degree of impact Correlate to program-define response levels Identify appropriate risk/response scenario(s)

  18. Response Project Prism Develop a toolkit: Inventory and evaluate existing tools Assess functionality for Prism stages Adopt/adapt existing tools Develop new tools Apply to appropriate contextual layers Integrate tools into customizable toolkit

  19. Types of Tools Project Prism • link analyzers • log analyzers • Web crawlers • Web visualization programs • Web site management utilities

  20. Future Directions Project Prism • Preservation Risk Management Program: • Develop program using Prism framework • Provide organizational scenarios • Toolkit: • Complete inventory of tools • Build toolkit demonstrator • Applications: • Develop presentation techniques for stored resources • Enable risk/response scenario development

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