Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Jacek Koronacki"'
Publikováno v:
Applied Mathematics and Computation. 256:591-601
There are numerous measures designed to evaluate quality of a given data grouping in terms of its distinctness and between-cluster separation. However, there seems to be no efficient method to assess distinctness of the intrinsic structure within dat
Autor:
Jacek Koronacki, Jan Ćwik
Publikováno v:
Computational Statistics & Data Analysis. 26:199-218
A multivariate extension of the plug-in kernel (and filtered kernel) estimator is proposed and this uses asymptotically optimal bandwidth matrix (matrices) for a normal mixture approximation of a density to be estimated (the filtered kernel estimator
Autor:
Jacek Koronacki, U. Luboińska
Publikováno v:
Computational Statistics & Data Analysis. 18:317-330
Let X (1) ,..., X (m) be m independent, real-valued random variables with unknown densities and let Y = Ψ(X (1) ,...,X (m) ) be their known functional. The aim is to estimate the density of the random variable Y , given n independent realizations of
Publikováno v:
Bioinformatics and Biology Insights, Vol 4 (2010)
Bioinformatics and Biology Insights, Vol 2010, Iss 4, Pp 137-146 (2010)
Bioinformatics and Biology Insights
Bioinformatics and Biology Insights, Vol 2010, Iss 4, Pp 137-146 (2010)
Bioinformatics and Biology Insights
Motivation Despite more than two decades of research, HIV resistance to drugs remains a serious obstacle in developing efficient AIDS treatments. Several computational methods have been developed to predict resistance level from the sequence of viral
Autor:
Jacek Koronacki, W. Feluch
Publikováno v:
Computational Statistics & Data Analysis. 13:143-151
In the note, a simple modification of the least-squares cross-validation criterion is proposed for choosing the bandwidth of kernel density estimators. For an i.i.d. sample X1, X2, …, Xn, the modification consists in leaving out a number of terms w
Autor:
Jan Komorowski, Alvaro Rada-Iglesias, Stefan Enroth, Claes Wadelius, Michał Dramiński, Jacek Koronacki
Publikováno v:
Bioinformatics (Oxford, England). 24(1)
Motivation: Pre-selection of informative features for supervised classification is a crucial, albeit delicate, task. It is desirable that feature selection provides the features that contribute most to the classification task per se and which should
Autor:
Michał Dramiński, Jacek Koronacki, Marcin Kierczak, Witold R. Rudnicki, Krzysztof Ginalski, Jan Komorowski
Publikováno v:
ResearcherID
Bioinformatics and Biology Insights, Vol 2009, Iss 3, Pp 109-127 (2009)
Bioinformatics and Biology Insights
Bioinformatics and Biology Insights, Vol 3 (2009)
Bioinformatics and Biology Insights, Vol 2009, Iss 3, Pp 109-127 (2009)
Bioinformatics and Biology Insights
Bioinformatics and Biology Insights, Vol 3 (2009)
Reverse transcriptase (RT) is a viral enzyme crucial for HIV-1 replication. Currently, 12 drugs are targeted against the RT. The low fidelity of the RT-mediated transcription leads to the quick accumulation of drug-resistance mutations. The sequence-
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