Querying the deep Web

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Querying the deep Web

• By John Muntunemuine and
• Martha Kamkuemah
• Supervisor Sonia Berman

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Outline

• Problem being tackled
• Why its important
• Related Work
• Overview of the system
• Scope
• Design challenges
• Main components of project
• Key success factors
• Risks
• Conclusion

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Problem being tackled

• Querying databases hidden behind query interfaces
  and retrieve results from them
• Build a query based system able to send a query
  to multiple deep Web databases simultaneously
• Then investigate a generic solution

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Why its important?

• Not many tools out there to query the deep Web
• Can create Internet services such as comparison
  shopping by integrating data from competing
  service providers.
• Less effort to query single interface

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Related work

• S Raghavan H Garcia-Molina
• HiWE (Hidden Web Exposer) that automatically
  parses, processes interacts with form-based
  search interfaces

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Related work

• Article Web data management
• Integration of query interfaces
• Query processing
• Result processing

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Related work

• Wu
• Mismatch problem with one-to-one mapping
• Developed a clustered-based schema integration
  technique that maps fields in query forms

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Overview of the system
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Scope

• Heterogeneous nature of data stored in hidden
  databases
• Solution look at airline domain
• Start specific
• Generalize solution

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Design challenges

• Locating the relevant sections
• Semantically matching attributes

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Main components of project

• Two main parts
• Query formulation
• Result interpretation

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Success factors

• If we can send a query to one deep Web database
  and display results
• Then expand system for more general solution by
  implementing heuristic to deal with general pages
  

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Risks

• If the implementation of both parts of the
  system takes time, we might concentrate on one
  side of the system query formulation

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Conclusion

• Query hidden databases
• Investigate ways to make the system more general
• Subsystems
• Query formulation
• Result interpretation

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Ouestions?
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