Dot Product】的更多相关文章

Problem Introduction The dot product of two sequences \(a_1,a_2,\cdots,a_n\) and \(b_1,b_2,\cdots,b_n\) of the same length is equal to \(\sum\limits_{i=1}^na_ib_i=a_1b_1+a_2b_2+\cdots+a_nb_n\) Problem Description Task.The goal is,given two sequences…
These are vectors: They can be multiplied using the "Dot Product" (also see Cross Product). Calculating You can calculate the Dot Product of two vectors this way: a · b = |a| × |b| × cos(θ) Where:|a| is the magnitude (length) of vector a|b| is t…
Conduct Dot Product of two large Vectors 1. two pointers 2. hashmap 3. 如果没有额外空间,如果一个很大,一个很小,适合scan小的,并且在大的里面做binary search package fb; public class DotProduct { public int dotPro(int[][] v1, int[][] v2) { int[][] shortV; int[][] longV; if (v1.length…
以下CUDA sample是分别用C++和CUDA实现的点积运算code,CUDA包括普通实现和采用零拷贝内存实现两种,并对其中使用到的CUDA函数进行了解说,code参考了<GPU高性能编程CUDA实战>一书的第十一章,各个文件内容如下: funset.cpp: #include "funset.hpp" #include <random> #include <iostream> #include <vector> #include &…
参考的是<游戏和图形学的3D数学入门教程>,非常不错的书,推荐阅读,老外很喜欢把一个东西解释的很详细. 1.向量点积(Dot Product) 向量点积的结果有什么意义?事实上,向量的点积结果跟两个向量之间的角度有关. 2.向量叉积(Cross Product) 两个向量a,b,它们的叉积表示为axb,这个很容易跟数学中两个数字之间的相乘,但是这里是完全不同的. 两个向量叉积在图形坐标中就很直观了,axb同时垂直与a和b. 我们很容易验证axb是否同时垂直a和b向量.根据向量乘积的知识,我们只…
以下CUDA sample是分别用C++和CUDA实现的两个非常大的向量实现点积操作,并对其中使用到的CUDA函数进行了解说,各个文件内容如下: common.hpp: #ifndef FBC_CUDA_TEST_COMMON_HPP_ #define FBC_CUDA_TEST_COMMON_HPP_ #include<random> template< typename T > static inline int check_Cuda(T result, const char…
the inner product Givens two vectors \(x,y\in \mathbb{R}^n\), the quantity \(x^\top y\), sometimes called the inner product or dot product of the vectors, is a real number given by: \[x^\top y=\begin{bmatrix}x_1 , x_2 ,\cdots ,x_n \end{bmatrix}\begin…
题目链接: 传送门 Domino Effect time limit per test:1 second     memory limit per test:256 megabytes Description Little Chris is a huge fan of linear algebra. This time he has been given a homework about the unusual square of a square matrix. The dot product…
Cross Product These are two vectors: They can be multiplied using the "Cross Product" (also see Dot Product) The Cross Product a × b of two vectors is another vector that is at right angles to both: And it all happens in 3 dimensions! Calculatin…
今天学习到numpy基本的运算方法,遇到了一个让我比较难理解的问题.就是dot函数是如何对矩阵进行运算的. 一.dot()的使用 参考文档:https://docs.scipy.org/doc/numpy/reference/generated/numpy.dot.html dot()返回的是两个数组的点积(dot product) 1.如果处理的是一维数组,则得到的是两数组的內积(顺便去补一下数学知识) In : d = np.arange(0,9)Out: array([0, 1, 2, 3…