1. morville@semanticstudios.com 1 Information Architecture Designing and Organising Digital Information Spaces Part III. Advanced Navigation & Search

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5. 5 The Yahoo Taxonomy Model An informal count suggests more than 67,000 categories in Yahoo with roughly 4 to 8 levels of hierarchy between the main page and actual content.

6. morville@semanticstudios.com 6 Faceted Classification

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8. 8 Wine.com by the Numbers Facet# of Vocabulary Terms Type46 Region16 Winery750 Price6 Ratings6 Total Terms824 Total Combinations19,872,000 4 facets with 10 nodes each have the same discriminatory power as one hierarchy of 10,000 (10 4 ) nodes. Joseph Busch Taxonomy Strategies

9. morville@semanticstudios.com 9 Common Facets FacetsDescription TopicEnterprise-wide subject hierarchy. Content TypeFormats that are meaningful to employees. Products & ServicesComplete range of products and services. IndustryBroad market categories. OrganizationBusinesses, functions, departments (authors/owners). Country & LocationGeographic indicator of intended audience. AudienceIntended users of content and services. LanguagesLanguage of documents.

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19. morville@semanticstudios.com 19 The Influence of Assortment Structure on Perceived Variety and Consumption Quantities by Kahn and Wansink, Journal of Consumer Research (article)article It is widely assumed across disciplines that increasing the actual variety of an assortment increases the quantity consumed. We show, however, that the perceived variety of an assortment also robustly drives consumption even when actual variety is unchanged. For small sets, disorganized assortments may appear to have more perceived variety, but the opposite might be true for assortments with a large mix of different options.

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23. morville@semanticstudios.com 23 Buying Info 14 Screens 300 Links 3,000 Words

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25. morville@semanticstudios.com 25 Interaction Design for Recommender Systems by Kirsten Swearingen & Rashmi Sinha, SIMS, UC Berkeley (article)article Tested 11 systems including Amazon, RatingZone, Sleeper, MovieCritic, Reel, CDNow, Mood Logic, and Media Unbound Two factors emerged as strongly affecting levels of user trust: familiarity with recommended items and transparency of system logic.

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32. morville@semanticstudios.com 32 “Intuitively, pages that are well cited from many places around the web are worth looking at.” Sergey Brin & Larry Page

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35. morville@semanticstudios.com 35 To Connect Peter Morville morville@semanticstudios.com Semantic Studios http://semanticstudios.com/ Asilomar Institute for Information Architecture http://aifia.org/ Findability http://findability.org/