Skip to main content
SpringerLink
Log in
Book cover

Encyclopedia of Database Systems pp 4731–4732Cite as

Wrapper Stability

  • Reference work entry
  • First Online:

  • 42 Accesses

Synonyms

Wrapper adaptability; Wrapper robustness

Definition

A wrapper, whether handwritten or generated by a Web Data Extraction System, is a program that extracts data from information sources of changing content and translates the data into a different format. The stability of a wrapper is the degree of insensitivity to changes of the presentation (i.e., formatting, layout, or syntax) of the data sources. A stable wrapper is ideally able to extract the desired data from source documents even if the layout of the current documents differs from the layout of those documents that were used as examples at the time the wrapper was generated. Thus, a wrapper is stable or robust if it is able of coping with perturbations of the original layout.

Key Points

Documents and Web pages in particular are usually susceptible to slight layout changes over time. Most of these changes are minor changes. For example, an advertisement may be added to the top of a Web page. One would ideally wish that...

This is a preview of subscription content, log in via an institution.

Chapter
USD   29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD   4,499.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book
USD   6,499.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Learn about institutional subscriptions

Recommended Reading

  1. Baumgartner R, Flesca S, Gottlob G. Visual web information extraction with Lixto. In: Proceedings of the 27th International Conference on Very Large Data Bases; 2001. p. 119–28.

    Google Scholar 

  2. Davulcu H, Yang G, Kifer M, Ramakrishnan IV. Computational aspects of resilient data extraction from semistructured sources. In: Proceedings of the 19th ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems; 2000.p. 136–44.

    Google Scholar 

  3. Meng X, Hu D, Li C. Schema-guided wrapper maintenance for web-data extraction. In: Proceedings of the 5th ACM CIKM International Workshop on Web Information and Data Management; 2003.p. 1–8.

    Google Scholar 

  4. Phelps TA, Wilensky R. Robust intra-document locations. In; Proceedings of the 9th International World Wide Web Conference; 2000. p. 105–18.

    Article  Google Scholar 

  5. Wong T, Lam W. A probabilistic approach for adapting information extraction wrappers and discovering new attributes. In: Proceedings of the 2004 IEEE International Conference on Data Mining; 2004.p. 257–64.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Computing Laboratory, Oxford University, Oxford, UK

    Georg Gottlob

Authors
  1. Georg Gottlob
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Georg Gottlob .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. Computing Lab., Oxford Univ., Oxford, UK

    Georg Gottlob

Rights and permissions

Reprints and permissions

Copyright information

© 2018 Springer Science+Business Media, LLC, part of Springer Nature

About this entry

Check for updates. Verify currency and authenticity via CrossMark

Cite this entry

Gottlob, G. (2018). Wrapper Stability. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_1169

Download citation

Publish with us

Policies and ethics

Search

Navigation