Web scraping and data extraction service
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Transcript of Web scraping and data extraction service
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What is Web Scraping
• Web Scraping refers to an application that
processes the HTML of a Web page to extract
data for manipulation such as converting the
Web page to another format (i.e. HTML to
XML).
• It is also known as Web Harvesting and Web
Data Extraction
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Web Scraping Architecture
Image Credits: dotnet4features
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• Web Scraping scripts and applications will simulate a person viewing a Web site with a browser. Using these scripts you can connect to a Web page and request a page, exactly as a browser would do.
• The Web server will send back the page which you can then manipulate or extract specific information from.
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Converting Unstructured data to Structured data
Image Credits: netscavator
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• Unstructured content is largely obtained after the scraping process. Structuring the data is the tedious process. But nowadays most of the tools easily does this functionality to segregate the data based on the fields. After the segregation the data is converted into either an API or any other format like
• CSV• XML • XLS• JSON
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Web Indexing
Image Credits: iloveldsclothing
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• Web scraping is closely related to web indexing, which indexes information on the web using a bot or web crawler and is a universal technique adopted by most search engines.
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Uses of Scraping Services
Image Credits: agconexus
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Following are some of the uses of Scraping service:• Online price comparison• Contact scraping• weather data monitoring• Website change detection• To collect data's for research work• web mash up • web data integration• Scraping articles blog and content• Social media crawling• Crawling review data
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Outsourcing SLA for web crawl
Image Credits: cpltechnology
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If you have a plan to outsource the web crawl orScraping services, consider the following SLA's • Crawlability• Scalability• Data structure capabilities• Data accuracy• Data coverage• Availability• Adaptability• Maintainability
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