Author(s)

A.F. Gualtierotti

Abstract

There are many data mining problems which do not fit easily into the text- book mold of data mining exposition and software tools. In fact, most real life problems have a wider, less precisely defined scope than that of typical data mining discourse. One such example, for which a data mining project is under way, is presented and commented. The attendant difficulties as well as some potentially available tools (those that are presently tried, or eventually will be) are described and their (lack of) merit discussed. 1 Introduction Health insurance is ruled, in Switzerland, by a law (Loi federate du 18 mars 1994 sur 1'assurance-maladie - LAMal) which requires from every resident of Switzerland that he or she be insured against illness (Art. 3). Each resident is free to choose the insurance company that will provide the required in- surance (Art. 4). Insurance compa

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