Displaying similar documents to “Some results on the m ( 4 ) problem of Erdös and Hajnal.”

Consensus clustering with differential evolution

Miroslav Sabo (2014)

Kybernetika

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Consensus clustering algorithms are used to improve properties of traditional clustering methods, especially their accuracy and robustness. In this article, we introduce our approach that is based on a refinement of the set of initial partitions and uses differential evolution algorithm in order to find the most valid solution. Properties of the algorithm are demonstrated on four benchmark datasets.

A modified K3M thinning algorithm

Marek Tabedzki, Khalid Saeed, Adam Szczepański (2016)

International Journal of Applied Mathematics and Computer Science

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The K3M thinning algorithm is a general method for image data reduction by skeletonization. It had proved its feasibility in most cases as a reliable and robust solution in typical applications of thinning, particularly in preprocessing for optical character recognition. However, the algorithm had still some weak points. Since then K3M has been revised, addressing the best known drawbacks. This paper presents a modified version of the algorithm. A comparison is made with the original...