Mark-André Krogel: Database Mining. Propositionalization for Knowledge Discovery in Relational Databases

Database Mining. Propositionalization for Knowledge Discovery in Relational Databases


Description

Propositionalization is a process that leads from relational data and background knowledge to a single-table representation thereof, which serves as the input to widespread systems for knowledge discovery in databases. Systems for propositionalization thus support the analyst during the usually costly phase of data preparation for data mining. We present a framework that allows for a unified description of approaches to propositionalization. Within our framework, we systematically enhance existing approaches with techniques well-known in the area of relational databases, especially the application of aggregate functions. Further, we suggest special database schema transformations for efficiency reasons. We put special emphasis on empirical investigations into the spectrum of approaches. Data set sizes vary across different orders of magnitude, up to several million data points. Also, the domains are diverse, ranging from biological data sets to financial ones, in order to demonstrate the broad applicability of propositionalization.


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Author: Mark-André Krogel
Number of Pages: 204 pages
Published Date: 30 May 2008
Publisher: VDM Verlag Dr. Mueller e.K.
Publication Country: Germany
Language: English
ISBN: 9783639014198
Download Link: Click Here
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