"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)

 

0723 books out of 1304 items checked out at 11:00, 09.19.2017

[1304] Total items checked out [0283] Dewey (non-fiction) Books [0440] Non-Dewey (fiction) Books
[0723] Total Books [0557] 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


  22   [641] Food + drink
  18   [741] Drawing + drawings
  8   [428] Standard English usage
  7   [940] General history of Europe
  7   [305] Social groups
  6   [891] East Indo-European + Celtic
  6   [158] Applied psychology
  5   [746] Textile arts
  5   [720] Architecture
  5   [796] Athletic + outdoor sports + games
  5   [636] Animal husbandry
  5   [362] Social welfare problems + services
  5   [895] Literatures of East + Southeast Asia
  4   [973] General history of North America United States
  4   [613] Promotion of health
  4   [745] Decorative arts
  4   [747] Interior decoration
  4   [599] Mammalia (Mammals)
  4   [332] Financial economics
  4   [914] Europe

Hourly Histogram of Circulation Activities

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