Presentation is loading. Please wait.

Presentation is loading. Please wait.

AUSTRALIAN GOVERNMENT LOCATOR SERVICE (AGLS) Andrew Wilson National Archives of Australia.

Similar presentations

Presentation on theme: "AUSTRALIAN GOVERNMENT LOCATOR SERVICE (AGLS) Andrew Wilson National Archives of Australia."— Presentation transcript:


2 AUSTRALIAN GOVERNMENT LOCATOR SERVICE (AGLS) Andrew Wilson National Archives of Australia

3 THIS TALK WILL COVER: zWhat is metadata? zThe origins and objectives of AGLS zDublin Core and the AGLS standard zAGLS and recordkeeping metadata zNAA as AGLS Maintenance Agency

4 METADATA zA new term for something that has been around for a very long time zMany different metadata applications: ysystems operating ydata management yinformation management yrecordkeeping ydiscovery and retrieval zCategories overlap

5 WHY USE RESOURCE DISCOVERY METADATA ? zTOO much material on the web yinformation discovery is ineffective (high recall and low precision) zBUT searchers want to find the resources that are relevant to their query yhigh precision (relevant) results yprevent information overload yfind non-electronic resources zMEET needs by adding metadata to resources

6 Free text Structured Text Resource & metadata Database with schema Sophisticated searching Unsophisticated searching ADDING STRUCTURED DESCRIPTION

7 METADATA IS: zA way to add structured description to resources yAn old idea from libraries (catalogues) and archives (archival control systems) zDescription of semantic content ywhat resource is about ysearchers decide if useful yhelp indexers understand resource zDescription of technical details yhow to retrieve and what formats yconditions, history, and relationships

8 THE ORIGINS OF AGLS zReport of the Information Management Steering Committee, August 1997 zRecommended an Australian version of the Government Information Locator Service (GILS), to be called AusGILS zAusGILS Workshop, December 1997, devised AGLS - based on Dublin Core not on GILS


10 THE OBJECTIVES OF AGLS zTo improve the visibility and accessibility of government information and services through the standardisation of Web-based resource descriptions zTo enable Web-based search engines to do their job more efficiently zTo help ensure that those searching the Web are presented with relevant and meaningful hits in response to search requests

11 AGLS AND DUBLIN CORE zAGLS aims to achieve the objective of GILS by using the simplicity of Dublin Core zDublin Core is the emerging international standard for Web-based resource description zImportance of interoperability between AGLS and Dublin Core zDublin Core is designed to be extensible zAGLS is an extension of Dublin Core zAGLS fits within the Warwick Framework

12 15 DUBLIN CORE ELEMENTS zTitle zCreator zSubject zDescription zPublisher zContributor zDate zRights zType zFormat zIdentifier zSource Language zRelation zCoverage

13 3 ADDITIONAL AGLS ELEMENTS zFunction yDescribes the function/s of government to which the resource relates zAvailability yProvides information on how the resource may be obtained (i.e. to go beyond discovery into retrieval) zAudience ydescribes the target audience of the resource

14 THREE CATEGORIES OF METADATA ELEMENTS zOwnership and creators of resources zIntellectual content about resources zElectronic or physical manifestation of the resource


16 AGLS & QUALIFIERS (1) zThe current DC standard uses simple unqualified elements, e.g.

17 AGLS & QUALIFIERS (2) zAGLS uses a number of qualifiers in its implementation of DC zQualifiers are a way of being more specific about how metadata is to be interpreted zAGLS qualifiers are language, scheme, plus various subelements


19 AGLS IS SIMPLE, FLEXIBLE AND DYNAMIC zOnly 6 of the 18 elements are mandatory zAGLS metadata can be created at point of document creation, but can be added to and improved as documents evolve or become more significant zAGLS metadata can be linked to single items or to aggregates of resources zUsers can chose how much structure they want and what syntax they want to use

20 WHO OR WHAT CAN CREATE AGLS METADATA? (1) zAGLS metadata can be created automatically by: ya software application such as a records management system or Web publishing software which has self-documenting capabilities ya custom designed metadata generating tool such as DSTCs Reggie

21 WHO OR WHAT CAN CREATE AGLS METADATA? (2) zAGLS metadata can be created by human beings such as: ydocument authors, or yvalue-adders such as specialist knowledge representation experts

22 WHERE CAN AGLS METADATA BE STORED? zIt can be embedded in a HTML document using HTML metatagging zIt can be stored in a database or repository which can be interrogated by Web-based search engines using protocols such as Z39.50 or X.500 zVery soon, once the Resource Description Framework (RDF) is finalised, it will be able to be stored using an XML DTD (Document Type Definition)

23 INDIVIDUAL AGENCIES WILL DETERMINE THEIR OWN DEPLOYMENT POLICIES AND PROCEDURES zAgencies will make business choices about: ywhich resources to metadata (+ retrofitting) yhow much metadata will be created ywhen the metadata will be created ywho will be responsible for metadata creation ywhat metadata tools will be utilised ywhere the metadata will be stored and how it will be accessed

24 AGLS AND RECORDKEEPING METADATA (1) zA high proportion of resources described by AGLS will be records zRecordkeeping metadata also facilitates discovery and retrieval zTherefore, AGLS metadata should have a lot in common with, and may even be a subset of, recordkeeping metadata

25 WHAT DOES RECORDKEEPING METADATA DO? zEnables identification and authentication zDocuments content, structure and context of records zAdministers conditions of access & disposal zDocuments use history and RK processes zEnables discovery, retrieval and delivery zRestricts unauthorised use zAssures interoperability

26 EMERGING STANDARDS FOR ELECTRONIC RECORDKEEPING METADATA zUniversity of British Columbia templates zUniversity of Pittsburgh metadata specifications for evidence in electronic recordkeeping (David Bearman) zNational Archives of Aust draft government recordkeeping metadata standard zMonash University-led research project on recordkeeping metadata standards (SPIRT)

27 AGLS AND RECORDKEEPING METADATA (2) zGovernment recordkeeping metadata standards should dovetail neatly with AGLS to ensure a unified metadata regime for government zMetadata can be a means of linking government electronic recordkeeping and online resource discovery zNeed for conceptual unity between AGLS and the Monash University Project

28 AGLS AND RECORDKEEPING METADATA (3) zSome AGLS metadata could be captured as part of the recordkeeping metadata capture process and then extracted for migration to a Web environment whenever necessary zParticular AGLS elements (eg: Subject, Availability) could be created at the time of Web migration

29 IS AGLS WORTH THE EFFORT? zIf it is worth publishing something on the Web it is worth linking it to metadata to ensure people can find it zThe government has made a commitment to having all appropriate government information and services available on-line by the year 2000

30 THE NATIONAL ARCHIVES AS AGLS MAINTENANCE AGENCY zWill convene a cross-jurisdictional AGLS Working Group zImprovements to the User Manual zHardcopy version of the User Manual zDevelopment of an AGLS Website zLiaison with Dublin Core and GILS communities zRegistration of schemes and extensions

31 WHERE CAN I FIND OUT MORE? zWeb site: zAndrew Wilson zAdrian Cunningham (Director Recordkeeping and Descriptive Standards) zFAX:

32 OTHER METADATA RESOURCES: zDublin Core: zReg & Reggie (metadata editors): (+ links to other metadata schemas) zOther metadata tools: zResource Description Framework (RDF):

Download ppt "AUSTRALIAN GOVERNMENT LOCATOR SERVICE (AGLS) Andrew Wilson National Archives of Australia."

Similar presentations

Ads by Google