Tag Archives: computer

How do I Create the Identity Matrix in R? Also a bit of group theory.

I googled for this once upon a time and nothing came up. Hopefully this saves someone ten minutes of digging about in the documentation. You make identity matrices with the keyword diag, and the number of dimensions in parentheses. > … Continue reading

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Distance between Words

Which pair is more different? keyboard | keyb`ard keyboard | keybpard keyboard | keebored Of course in mathematics we get to decide among many definitions of size and there is no “correct” answer. Just what suits the application. I can … Continue reading

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Why is it that the standard of proof in software development theory┬áis “Some famous person said it’s cool and I can think of an analogy to a Malcolm Gladwell book so therefore i’m right”? Standards of proof in medicine—scurvy, limeys … Continue reading

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An unabashedly narcissistic data analysis of my own tweets. The unequivocally lovely Jeff Gentry (@geoffjentry) has contributed an R package with easy-to-read documentation that works, which I’ll walk through here so that you, too, can gaze at your own face … Continue reading

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No computerized calendar, log, scribble-pad, or time-tracking tool works as well as pen and paper. A. Grimm

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