2011 OptimalSchemesforRobustWebExt
Jump to navigation
Jump to search
- (Parameswaran et al., 2011) ⇒ Aditya Parameswaran, Nilesh Dalvi, Hector Garcia-Molina, and Rajeev Rastogi. (2011). “Optimal Schemes for Robust Web Extraction.” In: Proceedings of the VLDB 2011 Conference (4:11).
Subject Headings:
Notes
Cited By
Quotes
Abstract
In this paper, we consider the problem of constructing wrappers for web information extraction that are robust to changes in websites. We consider two models to study robustness formally: the adversarial model, where we look at the worst-case robustness of wrappers, and probabilistic model, where we look at the expected robustness of wrappers, as web-pages evolve. Under both models, we present optimal algorithms for constructing the most robust wrapper. By evaluating on real websites, we demonstrate that in practice, our algorithms are highly effective in coping up with changes in websites, and reduce the wrapper breakage by up to 500% over existing techniques.
References
,