L00king at the Web, through <XML> glasses
XML in the Web.
New contribution: Web wrappers
Put the glasses on
» If you please – draw me a wrapper...«
The Wrapper is inside the box
W4F wrapper architecture
World Wide Web Wrapper Factory (W4F)
HTML Extraction Language (HEL)
Tree navigation
2 ways to navigate the tree
Using conditions
Using regular expressions
Building Complex Structures
Mapping the extracted information
W4F Mappings
XML Templates
The full wrapper
GUI support: Extraction Wizard
GUI support: Applet Wizard
What can you do with your glasses on?
Experience with W4F
W4F Contributions
Bibliography
Email: alina@cs.huji.ac.il
Home Page: http://www.cs.huji.ac.il/~alina
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