www-ai.cs.tu-dortmund.de/LEHRE/FACHPROJEKT/SS12/paper/outlier/marascu2009.pdf
of values: [1, 1, 2, 5, 9, 10, 13, 15]. Its Haar wavelet transform is illustrated by the following table:
Level Approximations Coefficients 8 1, 1, 2, 5, 9, 10, 13, 15 4 1, 3.5, 9.5, 14 0, -1.5, -0.5, -1 [...] involved in the alignment. Ip (1 ≤ p ≤ r) is an itemset represented as (xi1 : mi1 , ...xit : mit ),where mit is the number of sequences containing the item xi at the p
th position in the aligned sequences [...] clusters. WOD’s principle of separating outliers from clusters is based on theorem 1.
THEOREM 1. Let P1 and P2 be the two plateaux obtained after applying the wavelet transform and selecting the most two signifi- …