指数时间 meaning in English
exponential time
exponential-time
Examples
- In general , the way to solve lrms is the enumeration method , which need more computational time
针对这样一个问题，人们一般采用的是枚举方法，但是枚举法是一个指数时间算法。 - We composed the coincident index of macroscopic economic prosperity of jinan city using the gray principal component analysis and made the analysis on the circulation of prosperity , and then we got the time series of gray principal component of economic prosperity index as figure 1 shows
80的最小厂作为所取主成分的个数。我们对济南市宏观经济一致指标组的作了灰色主成分分析并合成了灰色主成分景气指数。得到的一致指标组景气指数时间序列如图1所示。 - As an example , the time series of china composite stock index is considered firstly , the distribution of five day ' s return on china composite stock index is studied . secondly , based on the r / s analysis hurst exponent is worked out and determination detecting can be done . lastly , the topological characteristics such as correlation dimension and maximum lyapunov exponent are extracted from time series
作为例子，本文对中国股票指数时间序列做了实证分析，首先研究了中国股票指数的五天收益率的分布规律，然后运用重标极差分析方法计算出赫斯特指数，并以此为基础进行确定性检验，最后在相空间重构的基础上提取吸引子的拓扑特征指数。 - The primary advantage that elliptic curve systems have over systems based on the multiplicative group of a finite field ( and also over systems based on the intractability of integer factorization ) is the absence of a subexponential - time algorithm ( such as those of index calculus type ) that could find discrete logs in these groups
与基于有限域的乘法群系统(及基于整数分解的难解性之上的系统)相比,椭圆曲线系统的优势在于,迄今为止还没找到这类群上离散对数的次指数时间算法(如微积分类)