原文:http://blog.codinglabs.org/articles/pca-tutorial.htmlPCA(Principal Component Analysis)是一种常用的数据分析方法。PCA通过线性变换将原始数据
https://www.u72.net/daima/5a75.html - 2024-07-22 21:20:23 - 代码库这几天在研究混沌,并写了些程序将网上能找到的各种混沌模型以图形的形式显示出来.(一)混沌介绍 混沌(Chaos)是指发生在确定系统中的貌似随机
https://www.u72.net/daima/4evf.html - 2024-07-22 19:17:31 - 代码库1975年,物理学家米切尔·费根鲍姆(Mitchell Feigenbaum)发现,一个可用实验加以测 量的特殊数与每个周期倍化级联相联系。这个数大约是4.669,
https://www.u72.net/daima/460m.html - 2024-07-22 15:49:20 - 代码库logistic回归又称logistic回归分析,主要在流行病学中应用较多,比较常用的情形是探索某疾病的危险因素,根据危险因素预测某疾病发生的概率。相关DEMO参见:
https://www.u72.net/daima/4562.html - 2024-07-22 15:07:08 - 代码库//#pragma comment(linker, "/STACK:102400000,102400000")#include <cstdio>#include <cstring>#include <algorithm>#include <string>#inclu
https://www.u72.net/daima/2czx.html - 2024-07-20 01:12:36 - 代码库Cut the CakeTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 885 Accepted Submiss
https://www.u72.net/daima/4xn1.html - 2024-07-22 08:45:54 - 代码库题目链接:http://poj.org/problem?id=1745DescriptionConsider an arbitrary sequence of integers. One can place &#43; or - operators between int
https://www.u72.net/daima/4v49.html - 2024-07-22 07:33:05 - 代码库&#65279;&#65279;题意 如果a加上a所有数位上的数等于b时 a称为b的generator 求给定数的最小generator 给的数n是小于100,000的 考虑到所有数位和最大
https://www.u72.net/daima/2xz1.html - 2024-07-20 06:45:45 - 代码库1.ABS: 功用:返回给定数字的绝对值 SELECT ABS(A) ABSOLUTE_VALUE FROM NUMBERS;2.CEIL 和 FLOOR: 功用:CELL返回与给定参数相等或比给定参数大的
https://www.u72.net/daima/57se.html - 2024-09-07 08:29:31 - 代码库题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1060题目大意:求N^N的最高位数字。关键思想:换底公式使结果变为10^(N*log10(N)),再除以10^(digits
https://www.u72.net/daima/55n1.html - 2024-09-07 04:51:46 - 代码库A Mathematical CuriosityTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25871
https://www.u72.net/daima/mn4m.html - 2024-09-16 07:53:55 - 代码库题目传送门 http://acm.hdu.edu.cn/showproblem.php?pid=5073这道题RE了好多发啊囧,RE到精神不振。Galaxy的质心并不是一成不变的,随着一些星球的移动而
https://www.u72.net/daima/mhba.html - 2024-07-29 05:56:31 - 代码库F(n) = (n % 1) + (n % 2) + (n % 3) + ...... (n % n)。其中%表示Mod,也就是余数。 例如F(6) = 6 % 1 + 6 % 2 + 6 % 3 + 6 % 4 + 6 % 5 + 6 % 6 = 0 +
https://www.u72.net/daima/8a0d.html - 2024-09-11 02:14:08 - 代码库1.三角函数 坐标轴采用右手法则,沿Z轴的逆时针方向为正角度,假设原始点为p(x,y,z),a是X轴旋转到点p的角度,r是从原始点到p点的距离。用这两个变量计算
https://www.u72.net/daima/8sm4.html - 2024-09-11 18:14:35 - 代码库2017/3/30 21:49:57Determine whether an integer is a palindrome. Do this without extra space.版本1:要求不能用额外空间说明不能建立数组存每个
https://www.u72.net/daima/8b57.html - 2024-09-11 11:43:45 - 代码库彩桥Time Limit: 1000 MS Memory Limit: 32768 KB64-bit integer IO format: %lld , %llu Java class name: Main[Submit] [Status] [Discuss]题目链接
https://www.u72.net/daima/nawbz.html - 2024-07-30 17:12:29 - 代码库题意:给定k个数字,求最小的正整数n,使得“n的阶乘”是“这k个数字的阶乘的积”的倍数。1<=k<=1e6,数字ai满足1<=ai<=1e7分析:如果我们
https://www.u72.net/daima/6258.html - 2024-09-08 18:40:25 - 代码库题目链接:HDU:http://acm.hdu.edu.cn/showproblem.php?pid=3303Problem DescriptionWe believe that every inhabitant of this universe eventually w
https://www.u72.net/daima/6ve8.html - 2024-07-24 09:20:56 - 代码库题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4472Problem DescriptionProf. Tigris is the head of an archaeological team who is currentl
https://www.u72.net/daima/e7re.html - 2024-07-28 22:27:04 - 代码库题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5054Problem DescriptionBob and Alice got separated in the Square, they agreed that if th
https://www.u72.net/daima/7h27.html - 2024-07-25 02:09:57 - 代码库