Search results for: FRACTAL CURVES

• Bifractal receiver operating characteristic curves: a formula for generating receiver operating characteristic curves in credit-scoring contexts

  Publication

  • B. Kochański

  - Journal of Risk Model Validation - Year 2021

  This paper formulates a mathematical model for generating receiver operating characteristic (ROC) curves without underlying data. Credit scoring practitioners know that the Gini coefficient usually drops if it is only calculated on cases above the cutoff. This fact is not a mathematical necessity, however, as it is theoretically possible to get an ROC curve that keeps the same Gini coefficient no matter how big a share of lowest...

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• Compact antenna array comprising fractal-shaped microstripradiators

  Publication

  • A. Bekasiewicz
  • P. Kurgan
  • P. Duraj
  • M. Kitliński

  - Przegląd Elektrotechniczny - Year 2011

  A design method of antenna array consisting of eight microstrip patches modified with Sierpinski fractal curves has been presented andexperimentally validated in this paper. Method proposed has enabled the achievement of considerable miniaturization of array length (26%),together with multi-band behavior of the antenna, which proves the attractiveness of presented design methodology and its ability to be implemented in more complex...

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