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Feature transformation by function decomposition

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4 Author(s)
Zupan, B. ; Jozef Stefan Inst., Ljubljana Univ., Slovenia ; Bohanec, M. ; Demsar, J. ; Bratko, I.

The function decomposition described can identify subsets of existing features and discover nongiven functions that map these subsets to a new feature, also, it can organize the existing and new features into a hierarchy. The authors demonstrate their Hierarchy Induction Tool (HINT) system on a housing loan-allocation application. Methods for switching circuit design often implicitly deal with feature transformation. Such methods construct a circuit to implement a given or partially given tabulated Boolean function. The authors' function-decomposition method can discover and construct a hierarchy of new features that one can add to the original dataset or transform into a hierarchy of less complex datasets. The method allows the decomposition to deal with nominal-feature (that is, not necessarily binary) functions

Published in:

Intelligent Systems and their Applications, IEEE  (Volume:13 ,  Issue: 2 )