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Commonly used techniques for web crawlers
Commonly used technologies for web crawlers include focused crawler technology, crawling strategies based on link evaluation, crawling strategies based on content evaluation, focused crawling technology, etc. If you want to know more about web crawlers, you can read the articles below this topic.
What are the commonly used technologies for web crawlers?Commonly used technologies for web crawlers include focused crawler technology, crawling strategies based on link evaluation, crawling strategies based on content evaluation, focused crawling technology, etc. Detailed introduction: 1. Focused crawler technology is a themed web crawler that adds link evaluation and content evaluation modules. The key point of its crawling strategy is to evaluate the page content and the importance of links; 2. Use Web pages as semi-structured documents, which have A lot of structural information can be used to evaluate link importance; 3. Crawling strategies based on content evaluation, etc.
A must-read for Golang developers! Baidu AI interface implements web crawler functionA must-read for Golang developers! Baidu AI interface implements web crawler function Introduction: In today's era of information explosion, the Internet has become one of the first choices for people to obtain the latest and most comprehensive information. As a technical means to automatically extract web page information, web crawlers have become very important. This article will introduce how to use Baidu AI interface to implement a simple web crawler function and provide corresponding code examples. 1. Introduction to Baidu AI interface Baidu AI open platform provides a wealth of AI capability interfaces, including text recognition
Java web crawler development: teach you how to automatically crawl web page dataJava web crawler development: teach you how to automatically crawl web page data In the Internet era, data is a very precious resource. How to efficiently obtain and process this data has become the focus of many developers. As a tool for automatically crawling web page data, web crawlers are favored by developers because of their efficiency and flexibility. This article will introduce how to use Java language to develop web crawlers and provide specific code examples to help readers understand and master the basic principles and implementation methods of web crawlers. 1. Understand web crawlers
PHP study notes: web crawlers and data collectionPHP study notes: Web crawler and data collection Introduction: A web crawler is a tool that automatically crawls data from the Internet. It can simulate human behavior, browse web pages and collect the required data. As a popular server-side scripting language, PHP also plays an important role in the field of web crawlers and data collection. This article will explain how to write a web crawler using PHP and provide practical code examples. 1. Basic principles of web crawlers The basic principles of web crawlers are to send HTTP requests, receive and parse the H response of the server.
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