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catalogue Walk into LightGBM What is LightGBM? Disadvantages of XGBoost Optimization of LightGBM Basic principles of LightGBM Histogram algorithm Histogram acceleration LightGBM parallel optimization Practice code Detailed explanation of parameters Code practice Optimal model and parameters (dataset 1000) Model tuning Every word ...

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  in the last article, I learned about the storage principle of floating-point numbers in the computer, and also introduced the functions of rounding and remainder of floating-point numbers Two functions for rounding floating point numbers are also provided in the C language standard library. The function prototype is as follows: double ...

Guide: many places need to check the illumination, and there are many software to deal with it. Today I made a content about lighting effect. From 10 a.m. to 3:30 p.m., start writing headlines. About that long. There was no rest or meal at noon.Content:1. Start with the simplest case2. My Lighting class3. Basic parameter setting4. Grid import a ...

My blog: Q's blog Configuration preparation: ubuntu18 04 If you encounter other problems, please see some methods at the end of the article, or search by yourself. Installation steps First look WIK of ROS , with Chinese interface, select the appropriate version of the system and the method of ROS installation. This is mainly for Ubuntu 1 ...

Prop 1 . prop case Vue.component('blog-post', { // camelCase in JavaScript props: ['postTitle'], template: '<h3>{{ postTitle }}</h3>' }) <!-- In parent component kebab-case of --> <blog-post post-title="hello!"></blog-post> 1234567 2 . Single data flow All props form a one-way downstream binding between their p ...

1, Algorithmic mind map 2, Algorithm classification Time complexity and space complexity of the algorithm: 3, Bubble sorting 1. Basic thought Compare the two adjacent numbers in turn, and put the smaller number in the front and the larger number in the back. 2. Dynamic rendering 3. Code implementation //Bubble sorting private ...

Chapter 56 SQL function $EXTRACT A string function that extracts characters from a string by position. outline $EXTRACT(string[,from[,to]]) parameter String - the target string from which to extract the substring.from - optional - the position of a single character in the target string, or the beginning of the range of characters to e ...

Concept of right value reference Book back: C + + implementation of MyString. Continue to use the MyString code here int main() { String s1; s1 = fun(); int a = 10; int& b = a; //int&& c = a; Error!!! Only right values can be referenced int&& c = 10;//Only r-values can be referenced. Numeric constants are pure ...

The use of flask SQLAlchemy encapsulates and optimizes SQLAlchemy: Flask Sqlalchemy is a plug-in of the flask frameworkFlask SQLAlchemy is a plug-in that simply encapsulates SQLAlchemyIt makes it easier for us to use sqlalchemy in Flask. 1. Installation: pip install flask-sqlalchemy 2. Key points of using flask Sqlalchemy: 2.1 database co ...