opposite of modulus

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From the difference between C + + and Python division, we talk about modulo (modulus) and redundancy (remainder)

A very interesting phenomenon has been found today.As a division, Python2 and C + + have different divisible results in the case of negative numbers:When I was 5/3,Results for C + +: 1Results for Python2:2(Note that 5/-3 is still available in C + +-1

Principle of PCA algorithm (very clear explanation)

PCA (Principal Component analysis) is a commonly used method for analyzing data. PCA transforms the original data into a set of linearly independent representations of each dimension by linear transformation, which can be used to extract the main

(reprint) Mathematical basis for 3D graphics programming (1) vectors and their operations

Original address: http://blog.csdn.net/vagrxie/article/details/4960473Copyright NOTICE: This work is created by nine days Goose Ling, using the Creative Commons Attribution-NonCommercial Use 4.0 International License Agreement license.

Principle and practice of PCA

In the preprocessing of data, we often encounter the data dimension is very large, if not the corresponding feature processing, then the resource cost of the algorithm is very large, which in many scenarios is unacceptable. However, there is often a

The mathematical basis of visual slam the second chapter four Yuan

The mathematical foundation of visual slam the second four-dollar what is four-dollar numberCompared to Euler's angle, the four-tuple (quaternion) is a compact, easy-to-iterate representation that does not present singular values. It is widely used

The use of vector geometry in game Programming 2

For the first time, I said a little bit. The basic content of vector knowledge and a bit of usage skills, the simple display of its role in game programming. This time, take full advantage of the nature of the vector to imitate a physical phenomenon.

3D Mathematical Basis---vector in the unity3d of "Unity3d game development"

Vectors are the standard tool for 2D and 3D Mathematical research, and in 3D games vectors are the basis. Therefore, it is very important to master some basic concepts and properties of vectors and common operation methods. In this blog, horse and

Principle and proof of the negative value of two's Complement

(From: http://blog.pcware.cn/linux/tows_complement_proof.html) In this article, com refers to complement, neg refers to negative, and this article involves "2's complement" (two'sComplement) instead of "1 Completion Code" (one's complement) Most

Analysis of Gradient descent method

The gradient descent method is involved in the Solver optimization method of learning Caffe,caffe in the last period. At that time, the concept of gradient descent method and the principles are very vague, specifically to learn the next, now put

PKCS #1: RSA encrypted version 1.5

Organized by: China Interactive publishing network (http://www.china-pub.com/) RFC documentation Chinese translation program (http://www.china-pub.com/compters/emook/aboutemook.htm) E-mail: ouyang@china-pub.com Translator: Xu Zijun (happygogo

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