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A Role for Metadata in Promoting Accessibility

A Role for Metadata in Promoting Accessibility. Liddy Nevile La Trobe University Australia. Summary. The Web for all people Definition of accessibility Accessibility standards/laws Communities working on accessibility Metadata for accessibility Current state of development.

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A Role for Metadata in Promoting Accessibility

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  1. A Role for Metadata in Promoting Accessibility Liddy Nevile La Trobe University Australia

  2. Summary • The Web for all people • Definition of accessibility • Accessibility standards/laws • Communities working on accessibility • Metadata for accessibility • Current state of development

  3. The Web for every One • The range of benefits: • Knowledge/Science/… • Tele-health • Tele-education • Ecological • Equity --> telecommunications access for all --> content and services access for all

  4. Definition of accessibility • Scenario 1 • Rashid is driving his new Porsche to Agra on Valentine’s Day. He realises that he has not brought flowers and wants to know where he can collect some roses on his way. “Google” knows, but Rashid cannot take his eyes off the road to check the Web. His on-board computer is rendered useless.

  5. Definition of accessibility • Scenario 2 • Indira is a tele-education student studying mathematics . Her specialisation is continuous fractions. She is finishing her doctoral thesis. Her professor is in Delhi. Indira lives in Sakristi with her parents. Indira is deaf/blind and depends upon her computer and Braille device to communicate.

  6. Definition of accessibility • Accessibility is about ‘independence’, access despite changes in: • Devices (desktop, laptop, palm, phone..) • Contexts (quiet, noisy, public, …) • Modalities (seeing, hearing, touching, ..) • Abilities (illiterate, dyslexic, dysnumeric, …) • Languages • Cultures

  7. Definition of accessibility • In summary, accessibility is about content and services that are developed once and yet available to all devices (and people, including those using assistive technologies) • i.e. Re-usable multi-media content in forms that comply with W3C standards for accessibility

  8. Accessibility standards/laws • European Economic Community • Requirements for equity for people with disabilities, esp. in e-government, e-education, ... • U.S.A. • Requirements for government procurement (s. 508) - competitive advantage • Australia • Requirement for lack of discrimination (Disabilities Discrimination Act - Common Law interpretation)

  9. Accessibility standards/laws • India • A “right to information” • Differences (in enforcement): • EU - a right • USA - a constraint • Australia - a common law protection • India - a common law right

  10. ‘accessibility’ Communities • W3C and W3C WAI (Web Content Accessibility Initiative) • Guidelines for authors, authoring tools and user agent developers • EuroAccessibility • Characteristics of accessibility (based on WCAG) • Disability communities, advocacy communities, digital library initiatives, ….

  11. Accessibility Metadata WGs • Dublin Core Metadata Initiative • International Committee Technology Standards (INCITS V2) • IMS Global Learning Consortiumand • W3C’s Evaluation and Reporting Language (EARL) Working Group

  12. User profiling • WebForAll technology (Industry Canada) • smart card to manage hardware/software • AccessForAll profile (IMS et al.) • Control • Display • Content

  13. Control needs and preferences

  14. User profiling • WebForAll technology (Industry Canada) • smart card to manage hardware/software • AccessForAll profile (IMS et al.) • Control • Display • Content • AccessForAllAlways (CEN MMI-DC) - include language and culture

  15. User profiles Metadata repositorysearch engine etc.. Web services Content repositoryWeb server etc.. Content discovery/repair

  16. Technical aspects of access • Content from HTML to XML (W3C) • Use accessible technologies (SVG, SMIL, i18n, ...) • Migrate metadata ( HTML to XML to RDF) • Separate content & presentation (CSS, XSLT, ...) • Describe user in metadata => Use [content + presentation + user] metadata to provide access

  17. State of development • W3C WAI guidelines • WCAG, ATAG, UAAG, DI, CSS, EARL, XSLT, SMIL, SVG, …. • XAG • DCMI, IMS etc… • AccessForAll profile http://www.imsproject.org/accessibility/ • AccessibilityMetadata • 30th April 2004 in Brussels

  18. Thank you • http://w3.org/WAI/ • http://dublincore.org/groups/access/ • http://www.imsproject.org/accessibility • mailto:Liddy.Nevile@motile.net

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