"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)

 

0883 books out of 1354 items checked out at 10:00, 07.24.2017

[1354] Total items checked out [0357] Dewey (non-fiction) Books [0526] Non-Dewey (fiction) Books
[0883] Total Books [0441] Media (dvd, cd, etc.) [0004] 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


  53   [741] Drawing + drawings
  31   [641] Food + drink
  12   [629] Other branches of engineering
  11   [895] Literatures of East + Southeast Asia
  9   [940] General history of Europe
  9   [917] North America
  8   [305] Social groups
  8   [745] Decorative arts
  8   [306] Culture + institutions
  7   [973] General history of North America United States
  7   [616] Diseases
  7   [599] Mammalia (Mammals)
  5   [891] East Indo-European + Celtic
  5   [658] General management
  5   [613] Promotion of health
  4   [793] Indoor games + amusements
  4   [791] Public performances
  4   [158] Applied psychology
  4   [746] Textile arts
  4   [598] Aves (Birds)

Hourly Histogram of Circulation Activities

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