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Greenstone Digital Library
- 1. Greenstone Digital Library Software: An Overview Imran Mansuri Project Assistant (Library Science) INFLIBNET Centre 7 March 2011 Prepared by Imran Mansuri 1
- 2. Agenda • Introduction : Digital Library Software (DL) • Greenstone Digital Library Software (GSDL) • Introduction • History • Versions • Features • Unique Features • Technology used • Example Sites • Example Collections 7 March 2011 Prepared by Imran Mansuri 2
- 3. Digital Library Software • The term “Digital Library” refers to a library in which collections are stored in digital formats (as opposed to print, microform, or other media) and accessible by computers • The digital content may be stored locally or accessed remotely via computer networks • Access the books, images are in digital format • Using Net access to information from anywhere 7 March 2011 Prepared by Imran Mansuri 3
- 4. Digital Libraries : Features Dynamic Electronic Information Systems Increase Portability Efficiency of Access Flexibility Availability 7 March 2011 Prepared by Imran Mansuri 4
- 5. Digital Library Software Dspace Fedora Eprints Resource Space Greenstone 7 March 2011 Prepared by Imran Mansuri 5
- 6. Greenstone Digital Library Software • The Greenstone Digital Library Software (GSDL) provides a way of building and distributing digital library collections, opening up new possibilities for organizing information and making it available over the Internet or on CD-ROM • Developed by the New Zealand Digital Library Project (www.nzdl.org) at the University of Waikato • Distributed in co-operation with UNESCO and Humanities Library Project, Romania 7 March 2011 Prepared by Imran Mansuri 6
- 7. GSDL : Some Facts • Current version: 2.82 and 3.03 Available from http://www.greenstone.org • Software suite for building, maintaining, and distributing digital library collections • Comprehensive, open-source • Distribution and promotion partners: o UNESCO o Human Info NGO, Belgium 7 March 2011 Prepared by Imran Mansuri 7
- 8. GSDL : History 1995 - Digital library of Computer Science Technical Reports. Its established by New Zealand Digital Library 1997 - Decision to use the GPL (General Public License ); name : Greenstone adopted ; Work with Human Info NGO to produce humanitarian CD-ROMs 1998 Apr - First CD-ROM collection released: Humanity Development Library 1998 Aug - Greenstone.org website established 1999 BBC - Collection established 7 March 2011 Prepared by Imran Mansuri 8
- 9. 2000 Apr - Greenstone mailing list started Aug - Formally established cooperative effort with UNESCO and Human Info NGO Nov - Distribute software on SourceForge 2002 Apr - Development of Greenstone3 Mar - Official opening of the Niupepa collection, development of the Greenstone Librarian Interface Jun - First UNESCO Greenstone CD-ROM 7 March 2011 Prepared by Imran Mansuri 9
- 10. 2003 - A Java development that became known as the Greenstone Librarian Interface 2005 Nov - Initial release of Greenstone3 2006 Apr - Greenstone Support Group for South Asia launched 7 March 2011 Prepared by Imran Mansuri 10
- 11. GSDL : Version 2000 Feb - gsdl 2.12 Apr - gsdl 2.21 Dec - gsdl 2.30 2001 Feb – gsdl 2.31 2002 Jan – gsdl 2.38 2003 Jun - gsdl 2.40 2004 Feb – gsdl 2.50 2005 Apr – gsdl 2.60 and in November - gsdl 3.00 2006 Mar – gsdl 2.70 2007 Apr – gsdl 2.80 2008 gsdl 3.03 Current release gsdl 2.82 7 March 2011 Prepared by Imran Mansuri 11
- 12. GSDL : Features Multi S/W Platform Multi Lingual Support Structured Metadata in XML using DC Metadata Extraction Plug-ins for Documents Full-text mirroring Text Level Penetration Concurrent & Dynamic Content Development Uniform Presentation 7 March 2011 Prepared by Imran Mansuri 12
- 13. Collection Building • Web and command line mode • Input collections: • GSDL server (files) • Remote (FTP - files, HTTP – website pages) • Collection input: batch mode, NOT interactive • Document formats: HTML, PDF, Text, Word • (Doc, RTF), PS, e-mail, bibliographic 7 March 2011 Prepared by Imran Mansuri 13
- 14. • Support for full text tagging for hierarchical document browsing • Automatic text extraction and indexing ‘Plugins’ for different document formats (HTMLPlug, PDFPlug, etc.) May fail for some documents! XML representation – conversion to HTML for Display Native document format – storage and display (via browser plugins, helper applications) • Data compression support 7 March 2011 Prepared by Imran Mansuri 14
- 15. • Metadata Automatic extraction of simple metadata (e.g. Title, date) Explicit metadata via ‘Classifiers’ Hierarchical (e.g. Subject) List (e.g. Organization, Author) Used for browsing and field-based searching Multi-language support via Unicode 7 March 2011 Prepared by Imran Mansuri 15
- 16. Collection Browse and Search • Full text search • Metadata (field) search and browse • Boolean • Ranked • Multi-language support for browse/ search interface • Search history, search term • highlighting… 7 March 2011 Prepared by Imran Mansuri 16
- 17. Collection Presentation • Search results formatting Format strings in the configuration file • Home page customization Using macros 7 March 2011 Prepared by Imran Mansuri 17
- 18. GSDL : Features Easy Installation Easy Maintenance Hierarchy Structure Interface Customization – Front Page Design, Header for the Digital Library, Collection Icon, Cover Images Collection Configuration (Collect.cfg) File Scalability, Flexibility 7 March 2011 Prepared by Imran Mansuri 18
- 19. Collection Distribution • Web • CD-ROM Publish created collections to the CD-ROM Windows only Two possibilities: o Install GSDL software to HDD and access content on CD o Run GSDL search engine out of the CD! 7 March 2011 Prepared by Imran Mansuri 19
- 20. GSDL : Unique Features Incremental Collection Building Content Development in 3 different ways Good Documentation and Active Mailing List Variety of Plug-ins for different document Types Publishing on CD-ROMs Data Compression 7 March 2011 Prepared by Imran Mansuri 20
- 21. GSDL : Technology Used • Technology used in the current version – Java 1.6 (Higher) – Image Magic – Application Server : Apache 2.2 – GSDL_Linux 2.82 and Win 7 March 2011 Prepared by Imran Mansuri 21
- 22. GSDL : Example Sites India: Archives of Indian Labour 7 March 2011 Prepared by Imran Mansuri 22
- 23. United States: New York Botanical Garden 7 March 2011 Prepared by Imran Mansuri 23
- 24. International: Global Library Services Network 7 March 2011 Prepared by Imran Mansuri 24
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- 28. Some Observations Strengths: Configurability: content extraction for indexing, presentation layout, metadata for browsing and field- based searching (little difficult though!) Extensibility: Plugins for content extraction, Unicode for multilanguage support, source code availability Fulltext search on variety of document formats XML, Unicode, Dublin Core support Data compression CD-ROM publishing 7 March 2011 Prepared by Imran Mansuri 28
- 29. Limitations: Interactive content updating and management not possible No duplicate identification Metadata handling appears to be little complex Linux version seems to be more robust than Windows Hangs while processing some documents during collection building – no way to gracefully handle this 7 March 2011 Prepared by Imran Mansuri 29
- 30. Current Status Strong development work – CS department at University of Waikato, NZ Z39.50 experimental interface now available Promoted by UNESCO Beginning to be used worldwide Can be expected to reach CDS/ISIS like popularity (particularly in developing countries) 7 March 2011 Prepared by Imran Mansuri 30
- 31. Documentation and Help • Available at: http://www.greenstone.org – Software – Demo collections – FAQ – Tutorial materials • Documentation: Installer’s Guide, User’s Guide, Developer’sGuide, and other reading materials 7 March 2011 Prepared by Imran Mansuri 31
- 32. • Mailing lists: – Greenstone Users List – Greenstone Developers List • Greenstone Documentation Wiki http://wiki.greenstone.org/wiki/index.php/Gr eenstoneWiki 7 March 2011 Prepared by Imran Mansuri 32
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