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User Searching Behaviors (and Interactive Retrieval Techniques) within a Library Gateway

User Searching Behaviors (and Interactive Retrieval Techniques) within a Library Gateway. William H. Mischo Mary C. Schlembach David S. Vess University of Illinois at Urbana-Champaign November 13, 2008 DLF Fall Forum 2008. University of Illinois Library Gateway.

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User Searching Behaviors (and Interactive Retrieval Techniques) within a Library Gateway

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  1. User Searching Behaviors (and Interactive Retrieval Techniques) within a Library Gateway William H. Mischo Mary C. Schlembach David S. Vess University of Illinois at Urbana-Champaign November 13, 2008 DLF Fall Forum 2008

  2. University of Illinois Library Gateway • Gateway Portal introduced in September 2007 • Guide users to appropriate information resources • Recommender system • Integration of resources • Help with search strategy formulation and refinement • Custom Engineering Library portlet with fielded search approach • Powered by metasearch system suite (Easy Search) • Metasearch over 70 targets DLF 2008 Fall Forum

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  6. Questions • Will users find recommender approach useful? • Can we characterize user information seeking behaviors? • Can useful refinement and navigation services be introduced within the Gateway? • What will search sessions look like? DLF 2008 Fall Forum

  7. Easy Search Features • Recommender system • Transaction logs: 2.3 million user search arguments, 2.5 million clickthroughs. • Analysis of search arguments, pattern checking • Result displays influenced by search arguments • AJAX driven display • Links into the native interfaces at the point of completed search • NISO MXG support DLF 2008 Fall Forum

  8. User Studies • Markey’s two papers on End-User Studies - JASIST 2007 • 32 studies • Need for new OPAC studies • Library Portal/Gateway studies needed • Spink and Jansen findings on Web searches • Short search sessions • Average search: 2.3 words • “Advanced features” not being utilized • Users typically look at first page of results only DLF 2008 Fall Forum

  9. Search Assistance Technologies • IMLS NLG grant, NSF NSDL grant, Mellon DLF Aquifer • Deep transaction log analysis • Interactive Information Retrieval (IIR): contextual suggestions & links • Search refinement and navigational assistance • Goal is “smarter” system; address the Too Few/Too Many problems DLF 2008 Fall Forum

  10. Search Assistance Functions • Stopword removal • Term substitution • Spelling suggestions • Direct link prompts for frequently entered terms, pathfinder topics. Partial term matches • Author search prompts • Suggested limiting to phrase and title word and phrase searches • Dark target searches in background DLF 2008 Fall Forum

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  15. Author Search Patterns • Robert A. Smith • Smith, Robert A. • Smith r. a. • Smith RA • Smith, RA • R. Alan Smith • Robert Smith DLF 2008 Fall Forum

  16. Search Characterization • Analysis of sample of 3,000 searches • 49.4% “specific item” searches – book, journal, article title and/or author • 7.4% of the 49.4% are author/title • 28.9% are author • 40.5% are monographic searches • 6.8% are index/abstract • 5.7% are journal article • 11.8% are journal title • 17.96% of searches contain a name or organization– some are topical DLF 2008 Fall Forum

  17. 10.4% Booleans (10.15% AND, 0.2% OR, 0.1% NOT) 7.9% Commas 0.1% Parentheses 4.9% Quotes 20.5% Prepositions 9.8% Spell Suggests (31.5% are clicked) 0.06% + 0.05% Question form 40.4% Follow-ups 10% are Author 6.7% Author redo link (17% clicked) 3% from phrase/title links 3.3% show Direct suggests (60.5% clicked) Search Arguments 2007 – 2008 Searches DLF 2008 Fall Forum

  18. Gateway Tabs Distribution • 47.7% Easy Search • 25.1% Journal/Article Locator • 13.6% Books • 5.9% Journal Articles • 0.02% Reference (Other) • 2.8% Undergrad search • 4.7% “Native Mode” DLF 2008 Fall Forum

  19. 2007-2008 Easy Search -- Average 3.577 Words per Query

  20. 2008-2009 Easy Search -- 3.758 Words per Query

  21. 2008 Grainger Portlet (Fielded) -- 4.559 Words per Query

  22. Clickthroughs • 30.2% Academic Search Premier • 24.9% Voyager Online Catalog • 8.5% Scopus • 7.1% ISI Web of Knowledge • 6.8% InfoTrac • 4.1% CARLI Statewide Catalog • 3.1% Springer E-Books • 2.7% E-Resource List • 1.7% Google Books • 1.1% Amazon • 0.9% Google Scholar DLF 2008 Fall Forum

  23. What We Have Learned • Broad continuum of searches being performed– topical, specific item • Users expect sophisticated parsing – mental model • Spell suggestions important • Must accommodate specific item search • Author search and fielded search • Used as Reference tool • Search assistance being utilized DLF 2008 Fall Forum

  24. Future • Guided search module – “Help Getting Started” • Tailored (vertical) search modules – dissertations, e-books, popular journal articles • Faceted result displays • Merging of results • Agent approach DLF 2008 Fall Forum

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