1. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Knowledge organisation and the Web Nils Pharo, 6th November 2002

2. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Different levels Principles of thesaurus construction Topic maps Information architecture

3. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Thesaurus construction thesaurus definition: "The vocabulary of a controlled indexing language, formally organized so that the a priori relationships between concepts (for example as "broader" and "narrower”) are made explicit”

4. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Thesaurus

5. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Thesaurus construction guidelines for organisational web sites should be used with flexibility  Analyse the organisation  Content analysis  Controlled vocabulary  Create pages  Express hierarchy using links

6. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Topic maps Three characteristics topics associations (roles) occurrences

7. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Topic maps

8. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Topic maps vs. thesaurus principles 1 Similarities  Both approaches focus on concepts/topics and relationships  Both apply the idea of implementing relationships/associations as hypertext links  Both approaches facilitates hierarchical as well as associative linking (relationships)

9. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Topic maps vs. thesaurus principles 2 Differences  meta-level vs. resource level  Topic maps: no limitations on realised associations  A thesauri is a topic map

10. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Information architecture; definition 1 Information architecture (IA) is the art, science, and business of organizing information so that it makes sense to people who use it. (Stacy Surla, SIG-IA)

11. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Information architecture; definition 2 The definition: The art and science of organizing and labeling information to improve browsing and searching The thing: The structure of information and components for searching and browsing that information (Louis Rosenfeld, Sandefjord 2002)

12. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Information architecture; definition 3 The art and science of structuring and classifying web sites and intranets to help people find and manage information (Rosenfeld & Morville, 2002)

13. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Information architecture; issues Defining IA IA or architects of information Big IA – little IA IA and usability The Web and IA How to qualify for performing IA (Andrew Dillon, JASIST 2002)

14. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Three questions 1. Where am I? 2. Where have I been? 3. Where can I go?

15. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Challenges of structuring web sites  Lingual ambiguity  Heterogeneous objects  Different perspectives  Internal politics

16. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Four elements in IA  Organisation systems  Labelling systems  Navigation systems  Search systems (IR)

17. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Organisation systems  organisation schemas  organisation structures

18. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Organisation schemas  exact  ambiguous

19. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Exact organisation schemas  Alphabetical  Chronological  Geographical

20. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Ambiguous organisation schemas  Topic  Task  Audience  Metaphor  Hybrids

21. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Organisation structures  Hierarchy  Database model  Hypertext

22. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Hierarchical organisation structure  powerful  principle of mutual exclusion  breadth vs. depth  number of clicks  magical number of 7  2  future growth

23. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Relational database organisation structure  on metadata or very structured data  advanced queries  consistency control  reuse of data

24. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Hypertext organisation structure  complex  chaotic  supplementary

25. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Labelling  creating tags for representing content  good first impression for users  securing consistency  increase IR efficiency  thesaurus construction principles

26. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Standard labels Home page, home, start page Search, find Contact us, webmaster Help, FAQ News About us

27. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Guide for label creation  Focus on the resource’s context  Use identical label on link to identical URL  Do not use identical labels to different URLs  Beware of icons

28. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Sources for labels  Other web resources  Controlled vocabularies (thesauri, subject lists)  Content of resource  Suggestions from users and content experts

29. Knowledge organisation and information architecture, Nils Pharo 06.11.02 Navigation systems  client based functions  hierarchic structure  complementary systems