Tesis doctoralsDepartament d'Enginyeria Informàtica i Matemàtiques

Contributions to privacy in web search engines

  • Identification data

    Identifier:  TDX:1333
    Authors:  Erola Cañellas, Arnau
    Abstract:
    Web Search Engines collects and stores information about their users in order to tailor their services better to their users' needs. Nevertheless, while receiving a personalized attention, the users lose the control over their own data. Search logs can disclose sensitive information and the identities of the users, creating risks of privacy breaches. In this thesis we discuss the problem of limiting the disclosure risks while minimizing the information loss. The first part of this thesis focuses on the methods to prevent the gathering of information by WSEs. Since search logs are needed in order to receive an accurate service, the aim is to provide logs that are still suitable to provide personalization. We propose a protocol which uses a social network to obfuscate users' profiles. The second part deals with the dissemination of search logs. We propose microaggregation techniques which allow the publication of search logs, providing $k$-anonymity while minimizing the information loss.
  • Others:

    Publisher: Universitat Rovira i Virgili
    Date: 2013-09-09
    Identifier: http://hdl.handle.net/10803/130934
    Departament/Institute: Departament d'Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili.
    Language: eng
    Author: Erola Cañellas, Arnau
    Director: Castellà Roca, Jordi
    Source: TDX (Tesis Doctorals en Xarxa)
    Format: application/pdf, 153 p.
  • Keywords:

    K-anonimat
    microaggregació
    registres de cerca
    privadesa
    311 - Estadística
    004 - Informàtica
  • Documents:

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