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Devi Ahilya Vishwavidyalaya, Indore (M.P.)School of Library and Information Science, Indore
\\Session-2015-16
Metadata Harvesting tools
Submitted To:- Submitted by :- Dr. GHS Naidu
Umrav Singh
HOD SLIS, Indore MPhil Library and Information Sc.
Contents
Introduction to Metadata
Definition of Metadata
What is Meta Data harvesting
Meta Harvesting Process
Need of Meta Data
Types of Meta Data
Examples of metadata schemas
Library related standards: Considerations
Introduction to Metadata
Metadata can be defined as "data about data" describe the content, quality, condition, and other characteristics of data. Metadata is vital in helping potential users to find needed data and determine whether a data set will meet their needs before they spend the time and money to obtain and process it.
Example of Metadata
Element name Value
Title: Web catalogueCreator: Dagnija McAuliffePublisher: University of Queensland Library
Format: Text/htm
Definition of Metadata
“ Data that serves to provide context or additional information about other data. for example, information about the title, subject , author, typeface, enhancements, and size of the data file of a documents constitute metadata about that document. It may also describe the conditions under which the data stored in a database was acquired, its accuracy, data, time, method of compilation and processing, etc.”
According to : http://www.businessdictionary.com/definition/metadata.html
Need of Metadata Metadata is a systematic method for describing resources and thereby improving access to them.The primary aim of metadata is to improve resources discovery. Resource documentation
Resource selection, evaluation and assessment
Resource identification and location
Improving the quality and quantity of search result
Electronic commerce to encode prices, term of pay, etc.
Protecting instinctual property rights
Efficient content development and archiving
Types of Meta Data
Administrative Meta Data
Descriptive Meta Data
Structural Meta Data
Preservation Meta Data
Right Management Meta Data
What is Metadata Harvesting ?
Harvesting: In the Open Archives Initiative context, harvesting refers specifically to the gathering together of metadata from a number of distributed repositories into a combined data store.
The Web
An Aggregation and the web
Process of data Harvesting
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Need of Meta Data Harvesting
Single Platform for resource Discovery
Easy Sharing of Resources Between Libraries/ Digital Libraries
Archiving data
Preservation
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Interoperability Requirements
Meta Data Standard (Like Dublin Core Meta Data Elements Set)
Open Archives Initiatives – Protocol of Metadata Harvesting (OAI)
Data Provider
Service Provider
Tools
Cont..
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Cont……
Data Providers (DPs) Provide free Access to Meta Data.
Service Providers (SPS) Use the OAI Interfaces of the Data providers to harvest and store meta data.
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Example of Meta Data Harvesting Click to edit Master text styles
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Metadata Harvesting Services in India
1. NAME: Search Digital Libraries (SDL)URL: http://drtc.isibang.ac.in/sdl
Host: DRTC Bangalore
Software Used: PKP (Public Knowledge Project)
2. Name: Knowledge Harvester@INSA (Indian National Science Academy)
URL: http://61.16.154.195/harvester/
Host: INSA
Software Used: PKP (Public Knowledge Project)
Open Access Initiative for Metadata Protocol HarvestingOpen Access works are scattered across many disciplinary archives, institutional e-print archives,institutional repositories and open access journals. Therefore, it is difficult for users to locate allneeded works on a particular subject.
Metadata Harvesting Services in India Cont…..
3. NAME: Open J-Gate URL: www.openj-gate.com
Host: Informatics (India) Ltd.
4. Name: SEED (Search Engine for Engineering Digital-Repositories)
URL: http://eprint.iitd.ac.in/seed/
Host: IIT, Delhi
Software Used: PKP (Public Knowledge Project)
Metadata Schema
The Format or Schema of Metadata may be vary in different
organizations according to their requirements.
Each metadata schema will usually have the following characteristics:
•A limited number of elements
•The name of each element
•The meaning of each element
•Location or Address of each element
Meta Data harvesting Tools
Arc (http://arc.cs.odu.edu)
Citibase (http://citebase.eprints.org/cgi-bin/search)
CYCLADES (http://www.ercim.org/cyclader/)
Repox (http://repox.ist.utl.ptlindex.html/)
OAICAT (http://www..oclc.org/research/software/oai/cat/)
OAI Repository Explorer(http://re.cs.uct.anza/)
Oalster ( http://oaister.umdl.umich.edu/oloaister/)
DLESE jOAI Software (http://dlese.org/oai/index.jsp)
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Library related standards: Considerations
Metadata Standards
Some of the metadata standards available are MARC, MARC21, Dublin Core, UK MARC (now transformed to marc21), etc. MARC21 is the latest standards in term of metadata. The first level metadata elements of MARC are:
Leader and Directory
Control Fields 001-008
Number and Code Fields (01X-04X)
Classification and Call Number Fields (05X-08X)
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Library related standards: Considerations (cont’d.)
Main Entry Fields (1XX)
Title and Title-Related Fields (20X-24X)
Edition, Imprint, etc.Fields (250-270)
Physical Description, etc. Fields (3XX)
Series Statement Fields (4XX)
Subject Access Fields (6XX)
Added Entry Fields (70X-75X)
Linking Entry Fields (76X-78X)
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Examples of Metadata Standards Web Sites:
LC standards include:
MARC: Machine-Encoded Cataloging:
http://www.loc.gov/marc/
MARCXML
http://www.loc.gov/standards/marcxml/
MODS: Metadata Object Description Schema:
http://www.loc.gov/standards/mods/
EAD: Encoded Archival Description (LC & SAA):
http://www.loc.gov/ead/
Another standard—Developed by Dublin Core Metadata Initiative:
Dublin Core:
http://dublincore.org
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Conclusion
Metadata is a key part of the information infrastructure necessary to help create order in the chaos of the Web, infusing description, classification, and organization to help create more useful stores of information. OAI metadata harvesting offers a new bridge to bring new innovation in networked information services and applications, out of the research community more rapidly
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Reference
http://www.slideshare.net/ManasaRath/metadata-harvesting-46638140?qid=09b4ac52-cc73-4b6e-9ce3-c0625eb6b585&v=default&b=&from_search=1
https://www.google.co.in/?gfe_rd=cr&ei=C0ZMVd35J-LA8gfb0oCoCg&gws_rd=ssl
Thank you