Online team games need matchmaking systems which can handle a high throughput of players and form fair teams to play matches together. We study this problem from a theoretical perspective, by defining and analyzing a broad model which captures many applications. In the most basic formulation, we desire a data structure which supports adding and removing players, and extracting the best possible...

In this paper we describe a formal framework for the problem of mining association rules. The theoretical foundation is based on the field of formal concept analysis. A concept is composed of closed subsets of attributes (itemsets) and objects (transactions). We show that all frequent itemsets are uniquely determined by the frequent concepts. We further show how this lattice-theoretic framework...

This paper extends the decision tree technique to an uncertain environment where the uncertainty is represented by belief functions as interpreted in the Transferable Belief Model (TBM). This so-called belief decision tree is a new classification method adapted to uncertain data. We will be concerned with the construction of the belief decision tree from a training set where the knowledge about...

Fractional supersymmetry denotes a generalisation of supersymmetry which may be constructed using a single real generalised Grassmann variable, θ = θ̄, θn = 0, for arbitrary integer n = 2, 3, .... An explicit formula is given in the case of general n for the transformations that leave the theory invariant, and it is shown that these transformations possess interesting group properties. It is sho...

1. A. Atanasiu. Binary amiable words. International Journal of Foundations of Computer Science, 18(2):387–400, 2007. 2. A. Atanasiu, R. Atanasiu, and I. Petre. Parikh matrices and amiable words. Theoretical Computer Science, 390:102–109, 2008. 3. A. Atanasiu, C. Martin-Vide, and A. Mateescu. On the injectivity of the parikh matrix mapping. Fundamenta Informatica, 46:1–11, 2001. 4. S. Bera and K...

University of Twente The paper assesses the current standing of the 4Ps Marketing Mix framework as the dominant marketing management paradigm and identifies market developments, environmental changes, and trends, as well as changing academic attitudes likely to affect the future of the Mix as theoretical concept and also the favourite management tool of marketing practitioners. It reviews the c...