A distance based test on random trees

Details A distance based test on random trees A distance based test on random trees

2007-08-13

arxiv.org/abs/0708.1733v1

Mathematics

Statistics Theory

10 pages, 1 figure

Scientific paper

In this paper, we address the question of comparison between populations of trees. We study an statistical test based on the distance between empirical mean trees, as an analog of the two sample z statistic for comparing two means. Despite its simplicity, we can report that the test is quite powerful to separate distributions with different means but it does not distinguish between different populations with the same mean, a more complicated test should be applied in that setting. The performance of the test is studied via simulations on Galton-Watson branching processes. We also show an application to a real data problem in genomics.

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