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Finding Trees From Unordered 0--1 Data

by: Hannes Heikinheimo, Heikki Mannila, Jouni K Seppänen
(2006)


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Tree structures are a natural way of describing occurrence relationships between attributes in a dataset. We define a new class of tree patterns for unordered 0--1 data and consider the problem of discovering frequently occurring members of this pattern class. Intuitively, a tree T occurs in a row u of the data, if the attributes of T that occur in u form a subtree of T containing the root. We show that this definition has advantageous properties: only shallow trees have a significant...


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