Can
anyone tell me whether the log likelihood calculation that follows
(from Rayson and Rayson and Garside) produces the exact same log
likelihood figures for a 2X2 table that the formula in Dunning (1993)
does?
Rayson
and Garside:
-2lnλ
= 2*(((a*ln(a/E1))
+ (b*ln(b/E2)))
Rayson,
Paul.
“Matrix: A Statistical
Method and Software Tool for Linguistic Analysis Through Corpus
Comparison.” Ph.D. diss.,
Rayson,
Paul, and Roger Garside. “Comparing
Corpora Using Frequency Profiling.” Proceedings
of the Workshop on Comparing Corpora, (2000): 1-6.
Donald E. Hardy Associate Professor Department of English Colorado State University Fort Collins, CO 80523 970-491-5349 Don.Hardy@Colostate.edu http://textant.colostate.edu
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