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Auflistung nach Autor:in "Sturm, Arnon"

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  • Konferenzbeitrag
    A decision tree based recommender system
    (10th International Conferenceon Innovative Internet Community Systems (I2CS) – Jubilee Edition 2010 –, 2010) Gershman, Amir; Meisels, Amnon; Lüke, Karl-Heinz; Rokach, Lior; Schclar, Alon; Sturm, Arnon
    A new method for decision-tree-based recommender systems is proposed. The proposed method includes two new major innovations. First, the decision tree produces lists of recommended items at its leaf nodes, instead of single items. This leads to reduced amount of search, when using the tree to compile a recommendation list for a user and consequently enables a scaling of the recommendation system. The second major contribution of the paper is the splitting method for constructing the decision tree. Splitting is based on a new criterion - the least probable intersection size. The new criterion computes the probability for getting the intersection for each potential split in a random split and selects the split that generates the least probable size of intersection. The proposed decision tree based recommendation system was evaluated on a large sample of the MovieLens dataset and is shown to outperform the quality of recommendations produced by the well known information gain splitting criterion.
  • Konferenzbeitrag
    A domain engineering approach to specifying and applying reference models
    (Enterprise modelling and information systems architectures, 2005) Reinhartz-Berger, Iris; Soffer, Pnina; Sturm, Arnon
    Business process modeling and design, as an essential part of business process management, has gained much attention in recent years. An important tool for this purpose is reference models, whose aim is to capture domain knowledge and assist in the design of enterprise specific business processes. However, while much attention has been given to the content of these models, the actual process of reusing this knowledge has not been extensively addressed. In order to address this lack, we propose to utilize a domain engineering approach, called Applicationbased Domain Modeling (ADOM), for the purpose of specifying and applying reference models. We demonstrate the approach by specifying a sell process reference model and instantiating it for a chocolate manufacturer. The benefits of utilizing the ADOM approach for specifying business models are the provisioning of validation templates by the reference models and the ability to apply the approach to various modeling languages and business process views.