Nature 179, 595 (16 March 1957); doi:10.1038/179595a0
Distribution of Word Frequencies
I. J. GOOD
25 Scott House, Princess Elizabeth Way, Cheltenham.
THE purpose of this communication is to explain, in terms of the theory of information, the implications of the Zipf distribution of word frequencies1. The distribution is formally identical with the Pareto income and Willis taxonomic distributions, but the present discussion is restricted to word frequencies. The discussion resembles that of Mandelbrot2 but is simpler. The discussion by Parker-Rhodes and Joyce3 also resembles Mandelbrot's, but is fallacious.
Nature 395, 269-272 (17 September 1998) | doi:10.1038/26212; Received 30 March 1998; Accepted 25 June 1998
Dynamic topography, plate driving forces and the African superswell
Carolina Lithgow-Bertelloni1,2 and Paul G. Silver1
The Encyclopedia of Life (EOL) is an ambitious project to organize and make available via the Internet virtually all information about life present on Earth. At its heart lies a series of Web sites—one for each of the approximately 1.8 million known species. Each site is constantly evolving and features dynamically synthesized content ranging from historical literature and biological descriptions to stunning images, videos and distribution maps.
Explore.org is a philanthropic media organization. Everything you see here is created to improve the human condition. From Live Cams of the Cayman Reef to lots of pictures of puppies and kittens, explore seeks to present the details of life, small and large, with an artist’s eye toward beaut