Liane Acker

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Ideally, definitions induced from examples should consist of all, and only, disjuncts that are meaningful (e.g., as measured by a statistical significance test) and have a low error rate. Existing inductive systems create definitions that are ideal with regard to large dis-juncts, but far from ideal with regard to small disjuncts, where a small (large)(More)
Classification and Association rule mining are two basic tasks of Data Mining. Classification rules mining finds rules that partition the data into disjoint sets. This paper is based on MrCAR (Multi-relational Classification Algorithm) and Kohonen's Self-Organizing Maps (SOM) approach. SOM is a class of typical artificial neural networks (ANN) with(More)
Viewpoints are coherent collections of facts that describe a concept from a particular perspective. They are essential for a wide variety of tasks, such as explanation generation and qualitative model-ing. We have identified many types of viewpoints and developed a program, the View Retriever, for extracting them from knowledge bases, either singly or in(More)
For the children of the world in the hope that they will one day have access to on-line tutoring systems. And, for my wife Edna, who made sure that that I nished. Acknowledgments I would like to thank all the people who have, over time, used the KnEd interface. Your use, testing, and feedback have helped KnEd to become a robust system. In particular, I(More)
Ideally, deenitions induced from examples should consist of all, and only, disjuncts that are meaningful (e.g., as measured by a statistical signiicance test) and have a l o w error rate. Existing inductive systems create deenitions that are ideal with regard to large disjuncts, but far from ideal with regard to small disjuncts, where a small (large)(More)
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