查看“︁纳特”︁的源代码

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'''奈特'''（'''nat'''，或称'''nit'''或'''nepit'''）又称'''纳特'''，是信息论[[熵 (信息论)|熵 (資訊理論)]]的[[计量单位|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:<math>I_e = -\ln {p_i} </math>。

1纳特相当于1.44（[[二进制对数|lb]] [[e (数学常数)|e]]）[[位元|比特]]或0.434（[[常用对数|lg]] [[e (数学常数)|e]]）[[哈特雷]]，以及[[玻尔兹曼常量|k]] '''[[焦耳|J]]'''/'''[[开尔文|K]]'''。

== 参考文献 ==
* {{en}}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] {{Wayback|url=http://www.csse.monash.edu.au/~dld/David.Dowe.publications.html#ComleyDowe2005 |date=20160804182249 }}'', Chapter 11 (pp[http://www.csse.monash.edu.au/~dld/Publications/2005/ComleyDowe2005MMLGeneralizedBayesianNetsAsymmetricLanguages_p265.jpg 265] {{Wayback|url=http://www.csse.monash.edu.au/~dld/Publications/2005/ComleyDowe2005MMLGeneralizedBayesianNetsAsymmetricLanguages_p265.jpg |date=20160927133801 }}-[http://www.csse.monash.edu.au/~dld/Publications/2005/ComleyDowe2005MMLGeneralizedBayesianNetsAsymmetricLanguages_p294.jpg 294] {{Wayback|url=http://www.csse.monash.edu.au/~dld/Publications/2005/ComleyDowe2005MMLGeneralizedBayesianNetsAsymmetricLanguages_p294.jpg |date=20160927133755 }}) 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] {{Wayback|url=http://mitpress.mit.edu/catalog/item/default.asp?sid=4C100C6F-2255-40FF-A2ED-02FC49FEBE7C&ttype=2&tid=10478 |date=20060619060230 }}', MIT Press (ISBN 0-262-07262-9), April 2005.
* {{en}}Fazlollah M. Reza. ''An Introduction to Information Theory''. New York: Dover 1994. ISBN 0486682102 

[[Category:信息论]]
[[Category:计量单位]]