Keywords are the words in your text that are far more frequent, proportionally, than they are in a general reference corpus (here, the Brown corpus, whose 1 million words comprise 500 texts of 2000 words on a broad range of topics - see Brown freqs).The number accompanying each word represents the number of times more frequent the word is in your text than it is in the Brown corpus. For example, the first item in the output 502.50 backstage is calculated on the basic that backstage has 2 natural occurrences in the Brown's 1 million words, but 2 occurrences in your 1991-word text. These 2 occurrences are proportionally a lot more than the 2 occurrences in the Brown. Taken as a proportion of 1,000,000 words, these 2 occurrences represent 2/1991 x 1,000,000 = 1005 virtual occurrences. These 1005 occurrences are 502.50 times more numerous than the 2 occurrences in Brown. The keyword list below contains all the words in your text that are at least 10 times'key' a word is likely to be to your input text. more numerous in your text than in the Brown reference corpus (the "keyness factor."). The greater the keyness factor, the more
