Tag: line

Do you know Online DDL?

Table of Contents What is Online DDL? What problems does Online DDL solve? Classification Copy Prepare Execute Commit copy algorithm process Inplace Prepare Execute Commit inplace algorithm process Instant Use third-party tools to implement Online DDL gh-ost pt-osc Some additions Summary Online DDL syntax What is Online DDL? Online DDL (Online Data Definition Language) refers […]

Data Structure-Linear Table-In-depth explanation

Linear table Array Concept: An array (Array) is an ordered collection composed of a limited number of variables of the same type. Each variable in the array is called element. Array subscripts start from zero. Arrays use a contiguous memory space to store a set of data of the same type. Time complexity: Reading and […]

CS231n-Course Note01-Image Classification with Linear Classifiers

Core Concepts: K-Nearest Neighbor Linear classifiers: SVM, Linear classifiers:Softmax Two-layer neural network Image features As a core task in Computer Vision, Image Classification has two basic data-driven approaches which is K-nearest neighbor and linear classifier. In Machine Learning, the Data-Driven approach can be summarized into three key steps: Collect a dataset of images and labels […]

C# OpenCvSharp DNN HybridNets simultaneously handles vehicle detection, drivable area segmentation, and lane line segmentation

Effect Project Code using OpenCvSharp; using OpenCvSharp.Dnn; using System; using System.Collections.Generic; using System.Drawing; using System.IO; using System.Linq; using System.Numerics; using System.Text; using System.Windows.Forms; namespace OpenCvSharp_DNN_Demo { public partial class frmMain : Form { public frmMain() { InitializeComponent(); } string fileFilter = “*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png”; string image_path = “”; DateTime dt1 = DateTime.Now; DateTime dt2 = DateTime.Now; float […]

Front-end vue3 implements local and online file preview (including pdf/txt/mp3/mp4/docx/xlsx/pptx)

1. Only online preview is required, and the file address is accessible from the public network (1) Free preview of Microsoft office (recommended) Supports free preview of multiple office file formats such as doc/docx/xls/xlsx/ppt/pptx //Sample code //? Splice the address that needs to be previewed after https://view.officeapps.live.com/op/view.aspx?src=, as follows:\ let url=”http://xxx.com/files/demo.doc” window.open(“?https://view.officeapps.live.com/op/view.aspx?src=” + encodeURIComponent(?url)) (2) […]

Design and implementation of streamlined blog system developed based on Springboot

Table of Contents Preface 1. Technology stack 2. Introduction to system functions Personal Center Administrator management User Management Basic data management Blog information management Blog comment management Blog collection management Forum management Announcement information management Carousel image management 3. Core code 1. Login module 2. File upload module 3. Code encapsulation Foreword At present, we […]

Practical data analysis | Linear regression – female height and weight data analysis

Table of Contents 1. Data sets and analysis objects 2. Purpose and analysis tasks 3. Methods and Tools 4. Data reading 5. Data understanding 6. Data preparation 7. Model training 8. Model evaluation 9. Model parameter adjustment 10. Model prediction Commonly used third-party Python toolkits for implementing regression analysis algorithms include statsmodels, statistics, scikit-learn, etc. […]