"Making Visible the Invisible" Dewey Data Research


"Making Visible the Invisible" is a data analysis project at the Seattle Public Library active from 2005 to 2014. During this period, the circulation of books and media leaving the library are analyzed and visually mapped on an hourly basis. Visualizing the statistical information about what titles and topics are circulating provides a real-time living picture of the community in which the library is situated. (Project Description)

 

2500 books out of 3538 items checked out at 16:00, 03.24.2019

[3538] Total items checked out [0923] Dewey (non-fiction) Books [1577] Non-Dewey (fiction) Books
[2500] Total Books [0927] Media (dvd, cd, etc.) [0009] Misc

Dewey Decimal Classification Graph

This map highlights current circulating books according to their Dewey classification category in Generalities [0-99]; Philosophy & Psychology[100-199]; Religion [200-299]; Social Science [300-399]; Language [400-499]; Natural Science & Mathematics [500-599]; Technology & Applied Sciences [600-699]; Arts [700-799]; Literature [800-899]; Geography & History [900-999].


     

The top 20 Dewey categories this hour


  98   [741] Drawing + drawings
  77   [641] Food + drink
  25   [398] Folklore
  22   [306] Culture + institutions
  21   [305] Social groups
  18   [629] Other branches of engineering
  17   [914] Europe
  17   [613] Promotion of health
  16   [616] Diseases
  16   [973] General history of North America United States
  15   [158] Applied psychology
  15   [796] Athletic + outdoor sports + games
  14   [811] Poetry
  14   [910] Geography + travel
  14   [650] Management + auxiliary services
  14   [917] North America
  12   [747] Interior decoration
  12   [599] Mammalia (Mammals)
  12   [658] General management
  11   [591] Zoology

Hourly Histogram of Circulation Activities

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George Legrady, with Andreas Schlegel and August Black, October 2005