Our contribution: Web wrappers
We want to make the content of Web information sources transparently available to applications, through Web wrappers. And we want to export information content in a structured form like XML.
A Web wrapper has to:
- retrieve Web information
- extract Web information
- structure and export Web information
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What is the challenge here?
- HTML is involved with layout not structure. The structure is implicit.
- HTML has no clean syntax.
- How to offer an expressive and high-level way to extract some specific information from a Web page and map it to XML?
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Here comes the World Wide Web Wrapper Factory...
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The one from the Web, not the one from the specs.