Title: Department of Computer Science Seminar
Date: Feb. 4, 2000
Time: 2:00 pm to 3:00 pm
Venue: Room N101, CSIT Building [108]
Speaker: Dr Ljiljana Brankovic (Lecturer, Dept. of Comp. Sci.
& Soft Eng., The University of Newcastle )
Description: " Privacy in Data Mining"


                        Abstract

  The recent proliferation of data mining tools for the analysis of large
  volumes of data has paid little attention to individual privacy issues.
  In this talk we introduce methods aimed at finding a balance between the
 individuals' right to privacy and the data-miners' need to find general
  patterns in huge volumes of detailed records.  In particular, we focus
  on the data-mining task of classification with decision trees.  We base
  our security-control mechanism on noise-addition techniques used in
  statistical databases because
  (1) the multidimensional matrix model of statistical databases and the
  multidimensional cubes of On-Line Analytical Processing (OLAP)
  are essentially the same, and
  (2) noise-addition techniques are very robust.
  The main drawback of noise addition techniques in  the context of
  statistical databases is low statistical quality of released statistics.
  We argue that in data mining the major requirement of security
  control mechanism (in addition to protecting privacy) is not to
  ensure precise and bias-free statistics, but rather to preserve
  the high-level descriptions of knowledge constructed by artificial
  data mining tools.
  This is a joint research with Vladimir Estivill-Castro.
  
Biography: Dr Ljiljana Brankovic is a Lecturer in the Dept of Coputer
Science and Software Engineering at University of Newcastle, NSW.



URL: http://cs.anu.edu.au/lib/seminars/seminars00/dept2000020