Notes
Slide Show
Outline
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Leveraging Your Taxonomy to
 Increase User Productivity
  • MAIQuery and TM Navtree
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Taxonomies aid site organization
  • Taxonomy provides:
  • Framework for content organization
  • Hierarchical outline of your content by subject categories
  • Basis for effective browsing
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Integrated taxonomy enhances findability
  • Browsable categories of a directory
  • Smart search for term equivalents
  • Taxonomy terms (original or modified) as labels
  • Navigation aids incorporate taxonomy terms and relationships
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Example Search: body growth
  • Complete database (60,000 + titles)
  • Free text search
    • 8 hits — some irrelevant
  • Free text search on titles
    • 6 hits — limited recall
  • Search by taxonomy descriptor (AKA subject term or category)
    • 470 hits
      • 100% relevant
      • 100% recall
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Increasing User Productivity
  • Items in an information collection can be retrieved with better precision (relevance) and better recall by using a controlled vocabulary to assign subject terms (key words) to them


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Connecting Users
  • Use the rulebase you’ve developed for machine aided  indexing (MAIQuery)
  • Use the controlled vocabulary itself
     (TM Navtree)
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MAI’s talents
  • MAI (Machine Aided Indexer)
    • helps authors and editors assign effective subject terms
    • automates the assignment of subject terms to items in legacy collections
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Taxonomy terms on documents help sort and organize the content
  • M.A.I. suggests the correct terms from the taxonomy as descriptors
  • M.A.I. rulebase recognizes term equivalents
    • germs à Microorganisms
    • vaccin* à Pharmaceutical drugs



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MAI’s “hidden talents”
  • MAI can also:
    • Provide for the appropriate preferred term when given a word or phrase
    • Return preferred terms for uses of the word in different contexts



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More “hidden talents”
  • MAIQuery can:
    • Show related terms from the thesaurus to broaden a search
    • Show the rules and preferred term’s scope notes to clarify how the preferred term relates to others in the thesaurus



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Presenting: MAIQuery™
  • Web page presents a search box that will use the MAI rulebase
    • Can be in addition to full text search and advanced search
  • User enters a word or phrase in the search box
  • MAI searches the rulebase for any occurrences of the word(s)



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MAIQuery
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the MAIQuery demo
  • Uses web pages and php coding:
    • Passes the search words to “dosearch.php”
    • dosearch.php passes the term to MAI’s concept extractor
    • MAI returns a list of suggested terms from the controlled vocabulary
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Suggested terms
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Your Thesaurus as Directory
  • Present your controlled vocabulary as a guide to your collection



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Thesauri OnLine
  • Australian Governments' Interactive Functions Thesaurus – AGIFT
    http://www.naa.gov.au/recordkeeping/thesaurus/000482.htm
  • Transportation Research Thesaurus – TRT http://ntl.bts.gov/trt/trt_topterms.jsp
  • NBII (National Biological Information Infrastructure)
    http://thesaurus.nbii.gov/SearchNBIIThesaurus/about.faces


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Presenting: TM Navtree
  • Your thesaurus presented as a navigation aid
  • User “drill down” with all the neighboring terms visible
  • Each term indicates the number of documents indexed with it
  • Terms are hyperlinks to a list of items


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A hierarchical tree
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Choose a term
  • Click on a term, get the titles indexed with it
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Choose a title
  • Click on a title, get its details (or bring up the item)
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How it’s done
  • We used PHP Levels, an open source application from SourceForge to create the tree
  • An exported XML version of the thesaurus is parsed to produce the required text file to populate the tree
  • The content manager is queried for the document totals
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How it’s done, continued
  • When a term is selected, it is passed to a gettitles.php
  • A bit of php code connects to the content manager and returns a string of data about each title
  • The web page displays the data in the format desired


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The advantages
  • TM Navtree Top Terms describe the organization of your collection(s)
  • Narrower terms help your user hone in on the most appropriate term
  • Adjacent terms impart connotation
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The advantages
  • ALL the records indexed with the chosen term are returned
  • Your user finds what’s needed more quickly and is more productive
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MAI Query and NavTree from Data Harmony