“矩阵代数初步”(Introduction to MATRIX ALGEBRA)课程由Prof. A.K.Kaw(University of South Florida)设计并讲授. PDF格式学习笔记下载(Academia.edu) 第2章课程讲义下载(PDF) Summary Vector A vector is a collection of numbers in a definite order. If it is a collection of $n$ numbers, it is c…
http://www.ush.it/2009/07/26/php-filesystem-attack-vectors-take-two/ Did you enjoyed our previous "PHP filesystem attack vectors" research? This is the second part and continuation of that paper and highlight new ways to evade filters using some…
http://www.ush.it/2009/02/08/php-filesystem-attack-vectors/ On Apr 07, 2008 I spoke with Kuza55 and Wisec about an attack I found some time before that was a new attack vector for filesystem functions (fopen, (include|require)[_once]?, file_(put|get)…
题目链接: C. Vectors time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output At a geometry lesson Gerald was given a task: to get vector B out of vector A. Besides, the teacher permitted him to perform…
Partial Tree Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/598/problem/C Description You are given the set of vectors on the plane, each of them starting at the origin. Your task is to find a pair of vectors with the mini…
Matrices and Vectors Matrices are 2-dimensional arrays: A vector is a matrix with one column and many rows:The above matrix has four rows and three columns, so it is a 4 x 3 matrix. Notation and terms:So vectors are a subset of matrices. The above ve…
Operations on word vectors Welcome to your first assignment of this week! Because word embeddings are very computionally expensive to train, most ML practitioners will load a pre-trained set of embeddings. After this assignment you will be able to: L…
I. 复习word2vec的核心思路 1. Skip-gram 模型示意图: 2.word vectors的随机梯度 假设语料库中有这样一行句子: I love deep learning and NLP 中心词为deep,那么在计算梯度的时候则可以得到如下的梯度向量. 可以很明显地看到该向量非常稀疏.常见的解决办法有两种:一是使用稀疏矩阵更新运算来更新矩阵\(U,V\)的特定的列向量.二是使用哈希来更新,即key为word string,value是对应的列向量. II. 近似 1. 负采样…
Tutorials on training the Skip-thoughts vectors for features extraction of sentence. 1. Send emails and download the training dataset. the dataset used in skip_thoughts vectors is from [BookCorpus]: http://yknzhu.wixsite.com/mbweb first, you should…
Table of content List of test vectors for AES/ECB encryption mode AES ECB 128-bit encryption mode AES ECB 128-bit encryption mode AES ECB 128-bit encryption mode List of test vectors for AES/CBC encryption mode AES CBC 128-bit encryption mode AES CBC…
This blog shows you how to calculate and symbolize wind or current speed and direction when the underlying data is stored as U and V vectors. In order to capture the speed and direction of wind or a water current, anemometers or Doppler current prof…
传送门: http://codeforces.com/problemset/problem/598/C Nearest vectors time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given the set of vectors on the plane, each of them starting at…
题目链接: C. Nearest vectors time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given the set of vectors on the plane, each of them starting at the origin. Your task is to find a pair of…
Motion Vectors Merging: Low Complexity Prediction Unit Decision Heuristic for the inter-Prediction of HEVC Encoders <HEVC标准介绍.HEVC帧间预测论文笔记>系列博客,目录见:http://www.cnblogs.com/DwyaneTalk/p/5711333.html 2012 IEEE International Conference on Multimedia and…
CS224N Assignment 1: Exploring Word Vectors (25 Points)¶ Welcome to CS224n! Before you start, make sure you read the README.txt in the same directory as this notebook. In [7]: # All Import Statements Defined Here # Note: Do not add to this list. #…
Operations on word vectors Welcome to your first assignment of this week! Because word embeddings are very computionally expensive to train, most ML practitioners will load a pre-trained set of embeddings. After this assignment you will be able to: L…
目录 1.1. Vectors and Linear Combinations向量和线性组合 REVIEW OF THE KEY IDEAS 1.2 Lengths and Dot Products向量长度和点积 REVIEW OF THE KEY IDEAS 1.3 Matrices矩阵 REVIEW OF THE KEY IDEAS 1.1. Vectors and Linear Combinations向量和线性组合 emmm,想写细一点,发现下面的概括很准确了,没必要 REVIEW OF…
The amazing power of word vectors | the morning paper (acolyer.org) What is a word vector? At one level, it's simply a vector of weights. In a simple 1-of-N (or 'one-hot') encoding every element in the vector is associated with a word in the vocabula…
Source: http://stats.stackexchange.com/questions/117840/how-to-regress-out-some-variables Answer in the first place, one simple mathematics method. It seems to me that the following is the mathematically simplest way to partial-out variables from a c…
Say you have a <- c(1,3,5,7,9) b <- c(3,6,8,9,10) c <- c(2,3,4,5,7,9) A straightforward way to do the job is: intersect(intersect(a,b),c) More cleverly, and more conveniently if you have a lot of arguments: Reduce(intersect, list(a,b,c)) The Redu…
https://stackoverflow.com/questions/30808286/convert-dataframe-string-complex-i-to-j-python https://stackoverflow.com/questions/1550130/cloning-row-or-column-vectors If you have a string like this: complexStr = "0.015291+0.0075383i", you could d…
