纳特

奈特（nat，或称nit或nepit）又称纳特，是信息论熵的单位之一。以自然对数为底，而不是以2为底的对数。表达式为:I_e = -\ln {p_i} 。

1纳特相当于1.44（lb e）比特或0.434（lg e），以及k J/K。

参考文献

• J.W. Comley and D.L. Dowe, `[http://www.csse.monash.edu.au/~dld/David.Dowe.publications.html#ComleyDowe2005 Minimum Message Length, MDL and Generalised Bayesian Networks with Asymmetric Languages] , Chapter 11 (pp[http://www.csse.monash.edu.au/~dld/Publications/2005/ComleyDowe2005MMLGeneralizedBayesianNetsAsymmetricLanguages_p265.jpg 265] -[http://www.csse.monash.edu.au/~dld/Publications/2005/ComleyDowe2005MMLGeneralizedBayesianNetsAsymmetricLanguages_p294.jpg 294] ) in P. Grünwald, I. J. Myung and M. A. Pitt (eds.), [http://mitpress.mit.edu/catalog/item/default.asp?sid=4C100C6F-2255-40FF-A2ED-02FC49FEBE7C&ttype=2&tid=10478 Advances in Minimum Description Length: Theory and Applications] ', MIT Press (ISBN 0-262-07262-9), April 2005.
• Fazlollah M. Reza. An Introduction to Information Theory. New York: Dover 1994. ISBN 0486682102