Optimizing the classification prediction of probabilistic neural network PNN based on the cuckoo algorithm – code attached Article directory Classification prediction of probabilistic neural network PNN based on cuckoo algorithm optimization – code attached 1. Overview of PNN network 2. Related background of transformer fault diagnosis system 2.1 Model establishment 3. PNN network based on […]
Tag: ssi
HikariCP connection pool: Possibly consider using a shorter maxLifetime value.
Error analysis and positioning A database cluster is used in the project. When using it, it is found that the project is running and the database has not been operated for a period of time. If the database is operated again after a period of time, the following error will appear on the console. Failed […]
For interface automation testing, you must master these four methods of post submission data.
We all know that POST is generally used to submit data to the server. The four formats of POST submitted data are the four forms of Content-Type. Pay special attention to the format of the data in the body when http sends a request in each format. The 4 forms are: 1. application/x-www-form-urlencoded: URL encoded. […]
[Data processing] python Matplotlib partially enlarges the figure; marks the local enlarged subfigure of interest
Foreword In data visualization, it is often necessary to partially enlarge the data in a certain interval to obtain a higher contrast visualization effect. The following uses the Matplotlib library of the Python language to implement a simple partial magnification effect. Dependent libraries matplotlib: plotting library numpy: an extended library that supports a large number […]
12. Strings and regular expressions
Use regular expressions Related knowledge about regular expressions When writing programs or web pages that process strings, you often need to find strings that conform to some complex rules. Regular expressions are tools used to describe these rules. In other words, regular expressions are a tool. Defines the matching pattern of a string (how to […]
21. Integration of Flink’s table API and DataStream API (2) – batch processing mode and insert-only stream processing
Flink series of articles 1. Flink column The Flink column systematically introduces a certain knowledge point and explains it with specific examples. 1. Flink deployment series This section introduces the basic content related to the deployment and configuration of Flink. 2. Flink basic series This part introduces the basic parts of Flink, such as terminology, […]
React technical principles and code development practice: React form processing and verification
1. Background Introduction Currently, front-end technology is changing with each passing day, and new technologies are emerging one after another. React, as the most popular Javascript library at the moment, is increasingly favored by developers. React is known as “the Facebook of JavaScript”. Its advantages include componentization, declarative programming, JSX syntax, etc., and React Hooks […]
Using JsSIP for audio and video calls in Vue
JsSIP official website address: https://jssip.net/download/ Download the JsSIP plug-in: npm install jssip; Introduced into the project: import JsSIP from “jssip”; Initialize SIP let currentSession; let userAgent; let peer; var msg_log = null; sip_init () {<!– –> let _this = this; msg_log = {<!– –> el: document.querySelector(“.message”), log(msg) {<!– –> console.log(“msg”, msg); this.titleText = msg; this.el.innerHTML […]
FPGA generates 3X3 image processing matrix through FIFO
In the previous series of articles on median filtering, I have written about the generation method of 3×3 matrix template: Median filter design based on FPGA—-(3) Matrix template generation module design_verilog image generation 3*3 matrix-CSDN blog Now it seems that this method is relatively crude and simple. The general processing method is to store an […]
How to understand and select optimistic locks and pessimistic locks during back-end development?
The author was asked this practical question when participating in a soft opening interview at a bank, so I came here to learn and summarize it. To get straight to the point, when choosing between pessimistic locks and optimistic locks, you need to consider the specific application scenarios: Pessimistic locking is suitable for scenarios where […]