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source
线弹性模型,可以对一般的弹性体通过abaqus进行验证使用(Linear elastic model)
- 2013-11-18 10:33:29下载
- 积分:1
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Stochastic-Process
随机过程基础课程,包含泊松过程、马尔可夫链、鞅等经典方法,清晰详细,有案例讲解(Stochastic Processes basic courses, including Poisson process, Markov chain, martingale and other classical methods, clear and detailed, there is case to explain)
- 2015-12-07 18:10:25下载
- 积分:1
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matlab有限元分析与应用
说明: 使用matlab进行 有限元计算,内含多种方式方法,欢迎交流讨论(Finite element calculation using matlab)
- 2020-06-21 03:20:01下载
- 积分:1
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SDCS
用matlab实现的改进的布谷鸟算法——SDCS,它是将最速下降法与CS相结合的(Matlab implementation of the improved algorithm of the cuckoo- SDCS , it will steepest descent method with CS
)
- 2020-09-25 10:27:47下载
- 积分:1
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transfermatrix
给出一个计算声子晶体结构的一维传递矩阵法。(Give a one-dimensional crystal structure of the phonon transfer matrix method.)
- 2020-12-03 20:39:25下载
- 积分:1
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zipf-random
随机数生成程序,该随机数呈zipf分布,就是大家常说对于内容的访问遵循80/20原则,也就是20 的内容,会占有80 的访问量。(Random number generator, the zipf was distributed random numbers, that is, we often say that the access to the content to follow the 80/20 principle, which is 20 of the content will occupy 80 of visits.)
- 2013-06-27 17:56:45下载
- 积分:1
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11087 统计逆序对
说明: Description
设a[0…n-1]是一个包含n个数的数组,若在ia[j],则称(i, j)为a数组的一个逆序对(inversion)。
比如 有5个逆序对。请采用类似“合并排序算法”的分治思路以O(nlogn)的效率来实现逆序对的统计。
一个n个元素序列的逆序对个数由三部分构成:
(1)它的左半部分逆序对的个数,(2)加上右半部分逆序对的个数,(3)再加上左半部分元素大于右半部分元素的数量。
其中前两部分(1)和(2)由递归来实现。要保证算法最后效率O(nlogn),第三部分(3)应该如何实现?
此题请勿采用O(n^2)的简单枚举算法来实现。
并思考如下问题:
(1)怎样的数组含有最多的逆序对?最多的又是多少个呢?
(2)插入排序的运行时间和数组中逆序对的个数有关系吗?什么关系?
输入格式
第一行:n,表示接下来要输入n个元素,n不超过10000。
第二行:n个元素序列。
输出格式
逆序对的个数。
输入样例
5
2 3 8 6 1
输出样例
5(Set a[0... N-1] is a n array containing n numbers. If there is a [i] > a [j] i n the case of I < j, then (i, j) is a n inversion pair of a array.
For example, has five reverse pairs. Please use the idea of "merge sorting algorithm" to achieve the statistics of inverse pairs with O (nlogn) efficiency.
The number of inverse pairs of a sequence of n elements consists of three parts:
(1) The number of reverse pairs in the left half, (2) the number of reverse pairs in the right half, (3) the number of elements in the left half is greater than that in the right half.
The first two parts (1) and (2) are implemented by recursion. To ensure the final efficiency of the algorithm O (nlogn), how should the third part (3) be implemented?
Do not use O (n ^ 2) simple enumeration algorithm to solve this problem.)
- 2019-01-07 23:52:06下载
- 积分:1
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shuzhifenxi
用追赶法来求解三对角线性方程组,解决数值分析问题,与大家共同学习。并且提供黄金分割法、高斯赛德尔迭代法求解数值分析问题(The catch-up method is used to solve tridiagonal linear equations, to solve numerical analysis problems, and to learn from you. The Golden Section Method and Gauss Seidel Iteration Method are also provided to solve numerical analysis problems.)
- 2018-11-29 17:30:55下载
- 积分:1
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MATLAB Codes for Dimensionality Reduction
子空间学习方法工具箱,包含PCA、LDA、LLE、ISOMAP等经典子空间分析方法(Subspace learning method toolbox, including classical subspace analysis methods such as PCA, LDA, LLE, ISOMAP and so on)
- 2021-04-17 16:38:53下载
- 积分:1
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277481
On the support vector machine (SVM) is a relatively quick calculation method, can improve the calculation speed
- 2017-05-13 06:24:09下载
- 积分:1