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PostWysłany: Czw 19:05, 31 Paź 2013    Temat postu: hollister france Web Data Extraction Software Intr

Vladimir Levov
Submitted 2011-10-06 08:48:21 Web contains an overwhelming amount of useful data that might be difficult or expensive to get from any other source. While much of the web data is unstructured in nature, there is also a significant amount of embedded structured data, such as product information on e-commerce sites, real estate listings or stock data on financial sites. This data is typically a description of objects retrieved from underlying relational databases and displayed in Web pages following some fixed templates. Web data extraction software is a tool that allows easy and robust extraction of structured data from template based HTML sources and conversion of such data back into a relational format that can be loaded into a spreadsheet or a database. Web data extraction logic is similar to the logic used by search engines when they index Web content. The difference is that web data extraction software focuses more on the translation of semi-structured dynamic Web
content into relational data suitable for analysis and offline access.
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