Tag: snow

Based on the snow melt optimization algorithm SAO published in June 2023, the LSSVM is optimized for single-input single-output time series fitting prediction modeling.

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OSG particle system special effects—–rain, snow, explosion, smoke

1. Smoke effect Plane crash Meteorite falling Source code: // CMyOSGParticle.cpp: This file contains the “main” function. Program execution will start and end here. // #include <iostream> #include <windows.h> #include <osgViewer/Viewer> #include <osg/Node> #include <osg/Geode> #include <osg/Geometry> #include <osg/Group> #include <osg/Billboard> #include <osg/Texture2D> #include <osg/Image> #include <osg/Vec3> #include <osg/Vec2> #include <osg/PositionAttitudeTransform> #include <osg/MatrixTransform> #include <osgDB/ReadFile> […]

Implementation of redemption coupons (UUID, snowflake algorithm, self-increasing id)

Make a request: Algorithm Analysis UUID Advantages: unique, highly random, 32-bit hexadecimal, not bad in readability Disadvantages: takes up too much memory (32*16=128 bits), uncontrollable Snowflake algorithm: Advantages: Globally unique, suitable for distributed systems, high generation efficiency, ID is a number and easy to understand Disadvantages: Not suitable for situations that require high readability, and […]

Distributed: SnowFlake algorithm

Directory Distributed: SnowFlake algorithm Why SnowFlake guarantees: Advantages of SnowFlake algorithm: Disadvantages of SnowFlake algorithm: Extension: Unique ID production method Shortcomings of databases and UUID schemes Use the database auto-increment sequence: UUID random number: Code Distributed: SnowFlake The snowflake algorithm can help us ensure globally unique identification in a distributed environment. The SnowFlake algorithm is […]

Data analysis case – Sentiment analysis of MatePad11 product user reviews based on snownlp model

?♂? Personal homepage: @ aiperson’s personal homepage ?About the author: Python learner I hope everyone will support us and we will make progress together! If the article is helpful to you, Welcome to comment Like Collection Add follow + Table of Contents 1. Project introduction 2. Introduction to data sets 3. Experimental process 3.1 Import […]

Disadvantages of UUID and Snowflake Algorithm

question General universal solution snowflake algorithm picture Foreword The unique system ID is a problem we often encounter when designing a system, and we often struggle with this problem. This article is to provide you with an idea for generating a distributed unique global ID generation solution. I hope it can help you. If there […]

Distributed ID generation-snowflake algorithm

Unique IDs can identify the uniqueness of data. There are many ways to generate unique IDs in distributed systems. There are roughly three common methods: Depends on the database, using MySQL auto-increment columns or Oracle sequences, etc. UUID random number snowflake snowflake algorithm 1. Shortcomings of database and UUID solutions Use the database auto-increment sequence: […]

MyBatisPlus (14) Primary key strategy (snowflake algorithm + UUID + primary key auto-increment + user input)

Description MyBatis Plus integrates a variety of primary key strategies to help users quickly generate primary keys. Snowflake algorithm ID (default strategy) (recommended) UUID Auto-increment ID The user enters the ID (the user must manually pass in the ID every time he inserts data) Snowflake algorithm ID: IdType.ASSIGN_ID (recommended) By default, the snowflake algorithm ID […]

Out-of-the-box lightweight snowflake algorithm id generator Java tool class

Out-of-the-box lightweight snowflake algorithm ID generator Java tool class 1.1 Background 1.2 Snowflake algorithm id generator Java tool class 1.1 Background In the Java backend development process, distributed id generation is generally required for distributed microservices. Here is a very easy to use and available out-of-the-box lightweight snowflake algorithm ID generator Java tool class. The […]