Výsledky vyhledávání - "Melicher, Valdemar"

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Saving proof-of-work by hierarchical block structure

Autor: Melicher, Valdemar

We argue that the current POW based consensus algorithm of the Bitcoin network suffers from a fundamental economic discrepancy between the real world transaction (txn) costs incurred by miners and the wealth that is being transacted. Put simply, whet

Externí odkaz: http://arxiv.org/abs/2404.14958

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Fast derivatives of likelihood functionals for ODE based models using adjoint-state method

Autor: Melicher, Valdemar, Haber, Tom, Vanroose, Wim

Publikováno v: Computational Statistics, 2017. The final publication is available at Springer via http://dx.doi.org/10.1007/s00180-017-0765-8

We consider time series data modeled by ordinary differential equations (ODEs), widespread models in physics, chemistry, biology and science in general. The sensitivity analysis of such dynamical systems usually requires calculation of various deriva

Externí odkaz: http://arxiv.org/abs/1606.04406

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On a continuation approach in Tikhonov regularization and its application in piecewise-constant parameter identification

Autor: Melicher, Valdemar, Vrabel, Vladimir

We present a new approach to convexification of the Tikhonov regularization using a continuation method strategy. We embed the original minimization problem into a one-parameter family of minimization problems. Both the penalty term and the minimizer

Externí odkaz: http://arxiv.org/abs/1305.3707

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Akademický článek

Homogenized eddy current model for non‐destructive testing of metallic cables

Autor: Melicher, Valdemar, Sergeant, Peter

Publikováno v: COMPEL -The international journal for computation and mathematics in electrical and electronic engineering, 2012, Vol. 31, Issue 6, pp. 1656-1680.

Externí odkaz: http://www.emeraldinsight.com/doi/10.1108/03321641211267056