1) mutual strictly concave function
![点击朗读](/dictall/images/read.gif)
互严格凹函数
2) strictly concave function
![点击朗读](/dictall/images/read.gif)
严格凹函数
1.
The new measures were derived by replacing the Shannon entropy function in mutual information with any strictly concave function,which were named mutual strictly concave function measures(NM_i,i=1,2,…,6).
为了提高医学图像配准的运算速度和增大配准的稳定区域,提出用严格凹函数取代互信息中的香农熵函数的方法,形成了互严格凹函数测度(NMi,i=1,2,…,6)。
3) strictly concave(convex)function
![点击朗读](/dictall/images/read.gif)
严格凹凸函数
4) strictly quasiconcave function
![点击朗读](/dictall/images/read.gif)
严格拟凹函数
1.
In this paper, we introduce the concept of closed function, obtain two sufficient and necessary conditions that the closed function is a quasiconcave function, and study the relation between quasiconcave function, strictly quasiconcave function and strongly quasiconcave function.
研究了一类函数成为拟凹函数的充分必要条件,讨论了拟凹函数与严格拟凹函数和强拟凹函数的关系。
5) Semistrictly quasiconcave function
![点击朗读](/dictall/images/read.gif)
半严格拟凹函数
6) strict function
![点击朗读](/dictall/images/read.gif)
严格函数
补充资料:凹函数
1 所谓凹函数,其首要前提是在一个区间上处处连续.
2 [f(a)+f(b)]/2>f[(a+b)/2]只是一般的定义,并不能作为判据。
3 一般的判别方法是求它的二阶导数,如果在区间上恒大于0,就成为凹函数。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条