rtlechow + statistics 55
Galton–Watson process - Wikipedia, the free encyclopedia
june 2011 by rtlechow
"There was concern amongst the Victorians that aristocratic surnames were becoming extinct. Galton originally posed the question regarding the probability of such an event in the Educational Times of 1873, and the Reverend Henry William Watson replied with a solution. Together, they then wrote an 1874 paper entitled On the probability of extinction of families. Galton and Watson appear to have derived their process independently of the earlier work by I. J. Bienaymé; see Heyde and Seneta 1977. For a detailed history see Kendall (1966 and 1975)."
statistics
math
june 2011 by rtlechow
MetaOptimize Q+A - machine learning, natural language processing, artificial intelligence, text analysis, information retrieval, search, data mining, statistical modeling, and data visualization
ai algorithms analytics community computerscience data datamining learning machine programming mining statistics visualization search
july 2010 by rtlechow
ai algorithms analytics community computerscience data datamining learning machine programming mining statistics visualization search
july 2010 by rtlechow
Goodhart's law - Wikipedia, the free encyclopedia
may 2010 by rtlechow
"Although Goodhart's law has been expressed in a variety of formulations, the essence of the law is that once a social or economic indicator or other surrogate measure is made a target for the purpose of conducting social or economic policy, then it will lose the information content that would qualify it to play such a role. The law was named for its developer, Charles Goodhart (a chief economic advisor to the Bank of England)."
economics
law
metrics
policy
politics
statistics
wikipedia
may 2010 by rtlechow
Statistics Module for Ruby
april 2010 by rtlechow
"From time to time I find it useful to do some simple number crunching in Ruby. Here are some of my utility functions.
Warning: This script is provided as is with no warranty implied or otherwise. Users must determine whether it is fit for any particular purpose, as we, the authors, make no claim to that end. Use it at your own risk."
ruby
statistics
math
Warning: This script is provided as is with no warranty implied or otherwise. Users must determine whether it is fit for any particular purpose, as we, the authors, make no claim to that end. Use it at your own risk."
april 2010 by rtlechow
Awesome Visualization of Social Media Usage Around the Globe [Infographic]
december 2009 by rtlechow
"The low level of microblog engagement: Despite the Twitter (Twitter) hype, microblogging is still not a mass social activity and nowhere near the size and scale of blogging."
socialmedia
visualization
infographics
social
world
global
maps
statistics
december 2009 by rtlechow
ETAOIN SHRDLU - Wikipedia, the free encyclopedia
november 2009 by rtlechow
ETAOIN SHRDLU is the approximate order of frequency of the twelve most commonly used letters in the English language, best known as a nonsense phrase that sometimes appeared in print in the days of "hot type" publishing due to a custom of Linotype machine operators.
language
typography
words
english
reference
wikipedia
fonts
statistics
november 2009 by rtlechow
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