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Algorithms that recognize a physical address on a web page

What are the best algorithms for recognizing structured data in an HTML page?

For example, Google finds out the home / company address by email and offers a map at that address.

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An entity-name retrieval framework such as GATE has at least solved the problem of retrieving information for a location using a directory of geographical names of famous places to help solve common problems. If the pages were not generated by the machine from a common source, you will find regular expressions that are slightly weak for the job.

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  • If you need information, such as paragraphs, get the content using tags.
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