Web-Harvesting

Web-Harvesting Concept Issues Prospects

Concept

Issues

Prospects

Web-Harvesting Concept Issues Prospects

Concept

Issues

Prospects

Concept Web resource Web resource Web resource Web resource Web resource Web resource Web resource Web resource Web resource

Reference to Web Resource Harnad, Stevan (2004). “The Self-Archiving Initiative.” http://www.ecs.soton.ac.uk/ ~harnad/Tp/Nature4.htm . Accessed last 15 September 2004.

Harnad, Stevan (2004). “The Self-Archiving Initiative.” http://www.ecs.soton.ac.uk/ ~harnad/Tp/Nature4.htm . Accessed last 15 September 2004.

The Web

The Web

The Web Harvester

3 Major Activities Imaging Digitization Storage Retrieval Web Archiving Migration Storage Retrieval Storage Migration Retrieval

Imaging

Digitization

Storage

Retrieval

Web Archiving

Migration

Storage

Retrieval

Storage

Migration

Retrieval

Storage

Migration

Retrieval

Developments in Web Archiving Internet Archive NEDLIB Nordic Web Archive Amiga Realm Internet Archive WebArchivist.org September 11 Web Archive Eprints.org

Internet Archive

NEDLIB

Nordic Web Archive

Amiga Realm Internet Archive

WebArchivist.org

September 11 Web Archive

Eprints.org

Web-Harvesting Concept WWW - publishing venue Web resources – non-permanent Web harvester - to store, migrate, retrieve web resources

WWW - publishing venue

Web resources – non-permanent

Web harvester - to store, migrate, retrieve web resources

Web-Harvesting Concept Issues Prospects

Concept

Issues

Prospects

Web-Harvesting Concept Issues Prospects

Concept

Issues

Prospects

Issues – Storage Legal justification Non-permanency of materials Daily changes Checksum No consistency in citations Refinement of criteria

Legal justification

Non-permanency of materials

Daily changes

Checksum

No consistency in citations

Refinement of criteria

Issues – Storage Several systems providing information Continued development Inaccessibility of data in databases Several information formats Overload of information Sufficient storage space

Several systems providing information

Continued development

Inaccessibility of data in databases

Several information formats

Overload of information

Sufficient storage space

Issues – Migration Developments in information formats Developments in hardware, operating systems, and software

Developments in information formats

Developments in hardware, operating systems, and software

Issues – Retrieval Need for registries Completeness of metadata Commercial vendor or not? Legal or illegal?

Need for registries

Completeness of metadata

Commercial vendor or not?

Legal or illegal?

Web-Harvesting Concept Issues Prospects

Concept

Issues

Prospects

Web-Harvesting Concept Issues Prospects

Concept

Issues

Prospects

Prospects Future harvesters will be more powerful Overflow, duplication Current options: Self-archiving by universities Self-archiving by authors Burning of cited web pages Printing of cited web pages

Future harvesters will be more powerful

Overflow, duplication

Current options:

Self-archiving by universities

Self-archiving by authors

Burning of cited web pages

Printing of cited web pages

Have a nice day!