31 Daniel Abril Guillermo Navarro-Arribas Vicenç Torra 2010 Web Intelligence and Intelligent Agent Technology (WI-IAT), 2010 IEEE/WIC/ACM International Conference on Toronto, Canada IEEE 3 296 - 299 Aug. 31 2010 978-1-4244-8482-9 Web indexing task,classification task,frequency term vector,k-anonymity preservation,privacy preserving information retrieval,semantic microaggregation,Internet,data privacy,information retrieval,pattern classification,vectors In this paper we introduce the problem of providing privacy preserving information for Web indexing, classification, and other information retrieval task. Web pages are represented by a frequency term vector that preserves k-anonymity for all the Web pages. This vector can then be used, for example, to build indexes of classifiers. Our proposal makes use of semantic micro aggregation. http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5614556