97847 artpubuab driver oai:ddd.uab.cat:97847 articleid 16962281vSpecialp41 eng Erola, Arnau Semantic microaggregation for the anonymization of query logs using the open directory project Web search engines gather information from the queries performed by the user in the form of query logs. These logs are extremely useful for research, marketing, or profiling, but at the same time they are a great threat to the user’s privacy. We provide a novel approach to anonymize query logs so they ensure user k-anonymity, by extending a common method used in statistical disclosure control: microaggregation. Furthermore, our microaggregation approach takes into account the semantics of the queries by relying on the Open Directory Project. We have tested our proposal with real data from AOL query logs. Tots els drets reservats http://www.europeana.eu/rights/rr-f/ Anglès Article de fons Privacy Web search engines Query logs K-anonymity Microaggregation Semantic info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Castellà-Roca, Jordi Navarro-Arribas, Guillermo Torra, Vicenç Vol. Special, Núm. (2011), p. 41-58 SORT : statistics and operations research transactions 1696-2281 18 138184 http://ddd.uab.cat/uab/sort/sort_a2011vSPECIAL/sort_a2011nSPECIALp41.pdf 0041 58 Special sort_a2011vSPECIAL 2011 ARTPUB UAB SORT file 0 MD5 8c4fe4f3140c4ec780c6a218050ea939 138184 PDF 1.6 filepath uab/sort/sort_a2011vSPECIAL/sort_a2011nSPECIALp41.pdf disk