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dbacl_1.12-2.1_armhf.deb » Content »pkg://dbacl_1.12-2.1_armhf.deb:699684/usr/share/man/man1/ info control *downloads*## hypex.1.gz

dbacl - digramic Bayesian text classifier… more info»

HMINE(1) HMINE(1) NAME hypex - computes the Chernoff exponent between two simple categories. SYNOPSIS hypex [-hH size] [-s stepsize] CATDUMP1 CATDUMP2 hmine -V DESCRIPTION hypex reads two category dumps produced by dbacl(1) after learning. A category dump is obtained using the -d and -l switches, and is a textual representation of the feature weights which exist in the binary category files. Given two such category dumps for simple unigram categories, hypex calculates the Kullback Leibler divergence between the probability models, and prints out exponential error expo‐ nents for Neyman-Pearson hypothesis tests under a range of threshold values. See Cover and Thomas (1991) Elements of Information Theory, Chap. 12. Note that only simple categories are supported, and the out‐ put only makes sense under appropriate theoretical condi‐ tions. This is a very specialized calculator. EXIT STATUS hypex returns 0 on success, 1 if an error occurs. OPTIONS -h -H Same as dbacl(1). Selects the hash sizes in powers of two. -s Stepsize for the threshold. hypex outputs exponents for different values of the threshold, within an interval bounded by the Kullback Leibler divergences between the categories. -V Print the program version number and exit. SOURCE The source code for the latest version of this program is available at the following locations: http://www.lbreyer.com/gpl.html http://dbacl.sourceforge.net BUGS Doesn't work with complex categories, and theoretical assump‐ tions are unrealistic in practice. AUTHOR Laird A. Breyer <laird@lbreyer.com> SEE ALSO dbacl(1), mailcross(1), mailfoot(1), mailinspect(1), mail‐ toe(1), regex(7) Version 1.12 Bayesian Classification Tools HMINE(1)

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