Digital library and metadata


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Digital library and metadata

  1. 1. Digital Library And Meta data Presented by Shri Ram Pandey NCSI, IISc Bangalore-560012
  2. 2. Contents: <ul><li>Digital Library </li></ul><ul><li>Metadata </li></ul><ul><li>Semantic DL </li></ul><ul><li>Conclusion </li></ul><ul><li>References </li></ul>
  3. 3. What is DL? <ul><li>&quot; A digital library is an organized and focused collection of digital objects , including text, images, video and audio, along with methods for access and retrieval , and for selection, creation, organization, maintenance and sharing of the collection . &quot; </li></ul>
  4. 4. Digital Library With digital library individual can: <ul><li>Gain access to the holding of librarians worldwide through automated catalogue </li></ul><ul><li>Local both physical and digitized version of scholarly article and books </li></ul><ul><li>Optimize searches, simultaneous search on internet commercial databases, and library collection </li></ul><ul><li>Save search results and conduct additional processing to narrow or qualify results. </li></ul>
  5. 5. Digital Library <ul><li>Database and archives (storage) </li></ul><ul><li>Digital bibliographic description (Metadata) </li></ul><ul><li>Full Text </li></ul>
  6. 6. Key Component of a Digital Library <ul><li>Initial conversion of content from physical to digital form. </li></ul><ul><li>Client services for the browser , including repository queering and workflow </li></ul><ul><li>Content delivery via file transfer and streaming media </li></ul><ul><li>Patron access through a browser or dedicated client </li></ul><ul><li>A private or public network. </li></ul>
  7. 7. Digital Library services <ul><li>􀂾 Catalogue Databases, </li></ul><ul><li>􀂾 Current Awareness Bulletins, </li></ul><ul><li>􀂾 Externally Purchased Databases, </li></ul><ul><li>􀂾 CD-ROM Databases, </li></ul><ul><li>􀂾 Remote Information Services, </li></ul><ul><li>􀂾 Internet Information Sources & Cataloguing, </li></ul><ul><li>􀂾 E-mail </li></ul>
  8. 8. Digital Library services <ul><li>􀂾 Bulletin Board Service, </li></ul><ul><li>􀂾 Audio and Video Communication, </li></ul><ul><li>􀂾 Electronic Table of Contents, </li></ul><ul><li>􀂾 Electronic Document Delivery Service, </li></ul><ul><li>􀂾 Electronic Theses and Dissertations, </li></ul><ul><li>􀂾 Reference Service, </li></ul><ul><li>􀂾 Electronic Publishing, </li></ul><ul><li>􀂾 Discussion groups and forums </li></ul><ul><li>􀂾 Tools for loading, storing, searching, and displaying digital objects </li></ul>
  9. 9. METADATA (Data about Data) <ul><li>Key of locating , using and processing digital content </li></ul><ul><li>Structured data about digital object and collection </li></ul><ul><li>Types : </li></ul><ul><li>1.Descriptive Metadata </li></ul><ul><li>2.Stuctered Metadata </li></ul><ul><li>3.Administrative Metadata </li></ul>
  10. 10. 1.Descriptive Metadata This Metadata provides information that : <ul><li>Allows discovery of collection or objects through the use of search tool </li></ul><ul><li>Provides sufficient context for understanding what has been found . </li></ul><ul><li>Metadata for individual objects varies by the type of data. </li></ul><ul><li>Well known DM is : MARC, Dublin Core </li></ul>
  11. 11. Structure Metadata <ul><li>This describes the associations within or among related individual information objects. </li></ul><ul><li>eg. A book which consists of pages and chapters </li></ul><ul><li>It explain how individual page images make up individual chapters , and how chapters make up the book. </li></ul>
  12. 12. Administrative Metadata <ul><li>Facilitates metadata facilities access management and preservation of digital resources. </li></ul><ul><li>It can describe attributes such as image revolution file size or audio sampling rate </li></ul><ul><li>Provide a record of how and when an object was created as well as archival and right management information </li></ul><ul><li>Standard for interoperability of digital collection is : METS (Metadata Encoding and transmission standards) </li></ul>
  13. 13. Semantic DL : Tomorrow of interconnected , social network <ul><li>Semantic Technology </li></ul><ul><li>Semantic Technology is the software technology that allows the meaning of and associations between information to be known and processed at execution time. </li></ul><ul><li>A semantic technology application is based on a knowledge model defined formally as an ontology that provides executable knowledge during run time . </li></ul><ul><li>Ontology provides a framework to represent any domain knowledge as ‘explicit, formal specification of shared conceptualization ’. </li></ul>
  14. 14. Semantic DL Tomorrow of interconnected , social network <ul><li>Search and browsing based on semantic concept </li></ul><ul><li>Users enhanced digital content using blogs, wikis etc </li></ul><ul><li>RDF provides bases for interconnection of digital library. </li></ul><ul><li>Support for different kind of Metadata eg Dublin Core, MARC -21 </li></ul>
  15. 15. Semantic DL <ul><li>Supporting user and communities: </li></ul><ul><li>Users have control over their profile info </li></ul><ul><li>Community : aware profiles integrated with bibliographic information </li></ul><ul><li>Support for community –generated knowledge </li></ul>
  16. 16. Conclusion <ul><li>Digital libraries are the next step in the convergence revolution . </li></ul><ul><li>Digital libraries are innovations, the implementation of which is nascent in the developing countries. </li></ul><ul><li>Digital libraries hold the promise of becoming key technologies for knowledge creation and management in the future. </li></ul>
  17. 17. References <ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul>
  18. 18. Thanks ?