Wrapper Verification (2000)
| Venue: | WORLD WIDE WEB JOURNAL |
| Citations: | 37 - 4 self |
BibTeX
@ARTICLE{Kushmerick00wrapperverification,
author = {Nicholas Kushmerick},
title = {Wrapper Verification},
journal = {WORLD WIDE WEB JOURNAL},
year = {2000},
volume = {3},
pages = {79--94}
}
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Abstract
Many Internet information-management applications (e.g., information integration systems) require a library of wrappers, specialized information extraction procedures that translate a source's native format into a structured representation suitable for further application-specific processing. Maintaining wrappers is tedious and error-prone, because the formatting regularities on which wrappers rely change frequently on the decentralized and dynamic Internet. The wrapper verification problem is to determine whether a wrapper is operating correctly. Standard regression testing approaches are inappropriate, because both the formatting regularities on which wrappers rely, and the source's underlying content, may change. We introduce rapture, a fully-implemented, domain-independent wrapper verification algorithm. rapture computes a probabilistic similarity measure between a wrapper's expected and observed output, where similarity is defined in terms of simple numeric features (e.g., the len...
