Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Kordecki Wojciech"'
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 33, Iss 3, Pp 599-602 (2013)
Dohmen [4] gives a simple inductive proof of Whitney’s famous broken circuits theorem. We generalise his inductive proof to the case of matroids
Externí odkaz:
https://doaj.org/article/9276739428f64c67bb0e59cf3e76b18e
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 33, Iss 2, Pp 277-288 (2013)
We formulate and prove a formula to compute the expected value of the minimal random basis of an arbitrary finite matroid whose elements are assigned weights which are independent and uniformly distributed on the interval [0, 1]. This method yields a
Externí odkaz:
https://doaj.org/article/d04e07e5b4b740739323cc4fc0b84013
Autor:
Kordecki, Wojciech
Publikováno v:
Operations Research Forum 2(4) 2021
In the paper the generalisation of the well known "secretary problem" is considered. The aim of the paper is to give a generalised model in such a way that the chosen set of the possible best $k$ elements have to be independent of all rejected elemen
Externí odkaz:
http://arxiv.org/abs/1801.00814
Autor:
Kipiński, Lech, Kordecki, Wojciech
Publikováno v:
In Journal of Neuroscience Methods 1 November 2021 363
We consider the problem of online graph colouring. Whenever a node is requested, a colour must be assigned to the node, and this colour must be different from the colours of any of its neighbours. According to the greedy algorithm the node is coloure
Externí odkaz:
http://arxiv.org/abs/1601.00252
Publikováno v:
Annals of Operations Research (2016) 238:299-313
In this paper, we pay our attention to geometric parameters and their applications in economics and finance. We discuss the multiplicative models in which a geometric mean and a geometric standard deviation are more natural than arithmetic ones. We g
Externí odkaz:
http://arxiv.org/abs/1306.4994
Publikováno v:
Operations Research and Decisions 25(3)(2015)
In this paper a quantitative analysis of the ruin probability in finite time of discrete risk process with proportional reinsurance and investment of finance surplus is focused on. It is assumed that the total loss on a unit interval has a light-tail
Externí odkaz:
http://arxiv.org/abs/1306.3479
Autor:
Kordecki, Wojciech
We study the number of hamiltonian circuits, containing a fixed basis, and the number of hyperplanes, which do not contain a fixed basis in perfect matroid designs. Projective and affine finite geometries are considered as examples of such matroids.
Externí odkaz:
http://arxiv.org/abs/1305.3119
Autor:
You, Wonsang, Kordecki, Wojciech
Publikováno v:
LIN Technical Reports 2010
A long memory process has self-similarity or scale-invariant properties in low frequencies. We prove that the log of the scale-dependent wavelet variance for a long memory process is asymptotically proportional to scales by using the Taylor expansion
Externí odkaz:
http://arxiv.org/abs/1202.4746
Publikováno v:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu / Research Papers of Wrocław University of Economics. (207):101-117
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=105794