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Dewey + DDC-driven resource discovery

Michael Panzer Assistant Editor, DDC OCLC panzerm@oclc.org. Dewey + DDC-driven resource discovery. Dewey Breakfast/Update 25 June 2011. Outline. DDC’s role in resource discovery Dewey + geospatial retrieval

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Dewey + DDC-driven resource discovery

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  1. Michael Panzer Assistant Editor, DDC OCLC panzerm@oclc.org Dewey +DDC-driven resource discovery Dewey Breakfast/Update 25 June 2011

  2. Outline • DDC’s role in resource discovery • Dewey + geospatial retrieval • Structural prerequisite: MARC fields 034, 043 • Semantic prerequisite: geocodes • Dewey + subject headings (+ facet-based retrieval) • Structural prerequisite: MARC fields 083, 085 • Semantic option: LCSH / FAST mapping

  3. MARBI Proposal 2011-10: Geographic Codes in the MARC 21 Classification Format • 034 ## $d W0140000 $e W0140000 $f N0140000 $g N0140000 $2 geonames • 043 ## $a f-sg--- • 153 ## $z 2 $a 663 $z 2 $e 66 $h Geographic Areas, Historical Periods, Biography $k Specific continents, countries, localities; extraterrestrial worlds $k Modern world; extraterrestrial worlds $k Africa $k West Africa and offshore islands $j Senegal Coordinates: 14ºN, 14ºW Source: GeoNames MARC Geographic Area Code 751 ## $a Republic of Niger $0 (GeoNames)2440476 $2 geonames Link to GeoName resource

  4. Placing Dewey on the map

  5. Placing Dewey on the map: Hierarchies Turkey / Bosporus (Europe & Asia) T2—49618 T2—5632 T2—5633

  6. Notational vs. Geospatial hierarchy

  7. Geospatial reasoning • Question: “Display all Dewey numbers that represent countries that are adjacent to T2—6626.”

  8. Outline • DDC’s role in resource discovery • Dewey + geospatial retrieval • Structural prerequisite: MARC fields 034, 043 • Semantic prerequisite: geocodes • Dewey + subject headings (+ facet-based retrieval) • Structural prerequisite: MARC fields 083, 085 • Semantic prerequisite: LCSH mapping

  9. Dewey number: 839.738 + FAST subject headings + Genre (LCSH / GSAFD)

  10. 394.12

  11. Related works: Dewey+ vs. Google Google: Shows you “more of the same” (e.g., books from Michael Pollan) Supports known-item search (searching for a version of a specific work) Dewey+ (“Kindred Works”): Shows you “more of the different” (cultural-historical accounts of eating and drinking) Supports exploratory search (exploring a subject/topic space)

  12. 394.12 394.120973 394.120954

  13. Dewey-driven discovery: Number components + geocodes • 394.120954394.12 + T2—54 • Neighboring countries: • China T2—51 • Pakistan T2—5491 • Bangladesh T2—5492 • Nepal T2—5496 • Bhutan T2—5498 • Myanmar T2—591 gn:neighbour 394.125 Meals notational 394.120954 structural 395.54 Table manners structural 394.13 Drinking of alcoholic beverages 394.13 +T2—51

  14. Thank you! • Comments, questions, suggestions? • Michael Panzer • panzerm@oclc.org

  15. Dewey-driven discovery: Number components + geocodes • 796.522095496 • 796.522 + T2—5496 • Distance from Everest, Mount (China and Nepal) • to Tibet Autonomous Region (China): 535.38km • to Nepal: 287.22km • to Himalaya Mountains: 287.22km • to Rājshāhi (Bangladesh : Division): 391.15km • to West Bengal (India): 456.25km • to Bengal (India): 456.25km • to Southern India: 163.92km • to Bhutan: 355.94km • to Jharkhand (India : State): 492.32km 913-919 ? 796.51 Walking structural 796.52 Distance < ~500km notational 796.522095496 796.51 +T2—515

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