Metadata harvesting Tools

transcript

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

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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

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

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

Metadata harvesting Tools

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