Journal
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
Volume 112, Issue 1, Pages 135-145Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.cmpb.2013.05.023
Keywords
Data security; Statistical test; Kruskal-Wallis test
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Statistical tests are powerful tools for data analysis. Kruskal-Wallis test is a non-parametric statistical test that evaluates whether two or more samples are drawn from the same distribution. It is commonly used in various areas. But sometimes, the use of the method is impeded by privacy issues raised in fields such as biomedical research and clinical data analysis because of the confidential information contained in the data. In this work, we give a privacy-preserving solution for the Kruskal-Wallis test which enables two or more parties to coordinately perform the test on the union of their data without compromising their data privacy. To the best of our knowledge, this is the first work that solves the privacy issues in the use of the Kruskal-Wallis test on distributed data. (C) 2013 Elsevier Ireland Ltd. All rights reserved.
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