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  <pub:InProceedings rdf:about="http://ebiquity.umbc.edu/paper/html/id/464/Applying-Differential-Privacy-to-Search-Queries-in-a-Policy-Based-Interactive-Framework">
    <rdfs:label><![CDATA[Applying Differential Privacy to Search Queries in a Policy Based Interactive Framework]]></rdfs:label>
    <pub:title><![CDATA[Applying Differential Privacy to Search Queries in a Policy Based Interactive Framework]]></pub:title>
    <pub:publishedOn rdf:datatype="&xsd;dateTime">2009-11-06T00:00:00-05:00</pub:publishedOn>
    <pub:abstract><![CDATA[Web search logs are of growing importance to researchers as they
help understanding search behavior and search engine
performance. However, search logs typically contain sensitive
information about users and therefore considerable caution must be exercised when considering releasing the logs to the research community. Current approaches to releasing search logs focus on
either protecting the privacy of users or enhancing the utility of
data to researchers. In this work, we address the privacy-utility tradeoff by providing safe access to search logs, instead of releasing them. We propose a policy based safe interactive
framework built on semantic policies and differential privacy to allow researchers access to search logs, while maintaining the privacy of the users. Semantic policies are used to infer the higher levels of information that can be mined from a dataset based on
the fields accessed by a researcher. The accessed fields are then used to build research profile(s) that guide the amount of privacy
to be enforced using differential privacy. We show the additional
utility that can be obtained in our framework by two demonstrative experiments that involve access to user level
information. Our results indicate that valid research can be conducted in our framework without forgoing the privacy of
individuals.]]></pub:abstract>
    <pub:edition><![CDATA[First]]></pub:edition>
    <pub:organization><![CDATA[ACM]]></pub:organization>
    <pub:counter>803</pub:counter>
    <pub:googleKey>XPC-cKnaLScJ</pub:googleKey>
    <pub:googleCitations>2</pub:googleCitations>
    <pub:tag><![CDATA[differential privacy]]></pub:tag>
    <pub:tag><![CDATA[semantic policy]]></pub:tag>
    <pub:booktitle><![CDATA[ACM International Workshop on Privacy  and Annonymity for Very Large Datasets]]></pub:booktitle>
    <pub:author>
       <rdf:List>
         <rdf:first><person:PhDAlumnus rdf:about="http://ebiquity.umbc.edu/person/html/Palanivel/Andiappan/Kodeswaran/"><person:name><![CDATA[Palanivel Andiappan Kodeswaran]]></person:name><rdfs:label><![CDATA[Palanivel Andiappan Kodeswaran]]></rdfs:label></person:PhDAlumnus></rdf:first>
         <rdf:rest>
           <rdf:List>
             <rdf:first><person:Collaborator rdf:about="http://ebiquity.umbc.edu/person/html/Evelyne/Viegas/"><person:name><![CDATA[Evelyne  Viegas]]></person:name><rdfs:label><![CDATA[Evelyne  Viegas]]></rdfs:label></person:Collaborator></rdf:first>
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    </pub:author>
    <pub:firstAuthor><person:PhDAlumnus rdf:about="http://ebiquity.umbc.edu/person/html/Palanivel/Andiappan/Kodeswaran/"><person:name><![CDATA[Palanivel Andiappan Kodeswaran]]></person:name><rdfs:label><![CDATA[Palanivel Andiappan Kodeswaran]]></rdfs:label></person:PhDAlumnus></pub:firstAuthor>
    <pub:softCopy><pub:SoftCopy>
      <pub:softCopyFormat><![CDATA[PDF Document]]></pub:softCopyFormat>
      <pub:softCopyURI><![CDATA[http://ebiquity.umbc.edu/get/a/publication/467.pdf]]></pub:softCopyURI>
      <pub:softCopySize>407606</pub:softCopySize>
    </pub:SoftCopy></pub:softCopy>
  </pub:InProceedings>

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