Tag Archives: pca

Finding “Distances” Between Shakespeare’s Plays 2: Projecting Distances onto New Bases with PCA

It’s hard to conceive of distance measured in anything other than a straight line. The biplot below, for example, shows the scores of Shakespeare’s plays on the two Docuscope LATs discussed in the previous post, FirstPerson and AbstractConcepts: Plotting the items in two dimensions gives the viewer some general sense of the shape of the data. “There are more items […]

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Adjacencies, Virtuous and Vicious, and the Forking Paths of Library Research

Browsable stacks – shelves of books that you can actually look at, pull off the shelf, read a while, and put back. They’re wonderful. Folger readers regularly comment on the fact that they can walk freely through the stacks of the secondary collection, which in our case means books published after 1830. That collection is […]

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