1 general random variable
1.1 two types of random variables
According to the number of possible values of random variables, they are divided into discrete type (finite value) and continuous type (infinite value).
1.2 discrete random variables
For discrete random variables, the probability mass function (PMF) is used to describe their di ...
Posted by synapp2 on Tue, 30 Nov 2021 05:51:54 -0800
Chapter 7: Exploring the glTF File Format
glTF is a standard format that can store both mesh and animation data. a file format that contains everything you need to display animated models. It's a standard format that most three-dimensional content creation applications can export to and allows you to load any arbitrary model.
glTF: Graph ...
Posted by pozer69 on Sun, 21 Nov 2021 15:45:07 -0800
least square method
What is the essence of least squares Taking measuring the length with different rulers as an example, several measured values are obtained. How to determine the true value? "y, which minimizes the sum of squares of errors, is the true value." this is based on the fact that if the error is random, the measured ...
Posted by britey on Fri, 19 Nov 2021 02:12:36 -0800
Ordinary Hanoi Tower
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The Tower of Hanoi is a mathematical problem based on a legend:
There are three poles A, B and C. There are N (N > 1) perforated discs on rod A, and the size of the ...
Posted by markbm on Thu, 18 Nov 2021 16:29:50 -0800
It's really convenient to use markdown to write documents and support mathematical formulas!!!Step 1: modify the preference settings and check the inline formula optionfile -> Preferences -> Markdown -> Inline formulaAfter setting according to the following figure, we can happily enter the formula in Typora~1, Enter Greek lettersEnter: ...
Posted by fukumdaryl on Mon, 08 Nov 2021 17:10:25 -0800
Code clipping algorithm for line segment
For example, many uneven straight-line segments are distributed on a canvas, and we want to find a rectangular window on the canvas and only want to get the straight-line segments in the rectangular window. How should we achieve this? We know that the straight line segment can be expressed by a para ...
Posted by Jeyush on Fri, 05 Nov 2021 23:45:29 -0700
Title Link: Where to Run? - LightOJ 1287 - Virtual Judge (ppsucxtt.cn)
Topic meaning: there are n cities, numbered 0~n-1, and there are m right undirected edges. The edge right represents the time it takes to pass through this edge. A thief starts from the city numbered 0, and he will not go to the city he has passed. Every time he arrives at ...
Posted by prasad_deba on Mon, 01 Nov 2021 06:14:03 -0700