Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Łukasz Waszak"'
Autor:
Joanna Kubik, Łukasz Waszak, Grzegorz Adamczuk, Ewelina Humeniuk, Magdalena Iwan, Kamila Adamczuk, Mariola Michalczuk, Agnieszka Korga-Plewko, Aleksandra Józefczyk
Publikováno v:
Molecules, Vol 27, Iss 21, p 7537 (2022)
The Centaurea L. (Asteraceae) genus includes many plant species with therapeutic properties. Centaurea castriferrei Borbás & Waisb is one of the least known and least described plants of this genus. The aim of the study was the phytochemical analysi
Externí odkaz:
https://doaj.org/article/76f2acc9e7804f92b771ef8e96c12957
Autor:
Mirosław Krzyśko, Łukasz Waszak
Publikováno v:
Acta Universitatis Lodziensis. Folia Oeconomica, Vol 5, Iss 325 (2016)
Canonical correlation methods for data representing functions or curves have received much attention in recent years. Such data, known in the literature as functional data (Ramsay and Silverman, 2005), has been the subject of much recent research int
Externí odkaz:
https://doaj.org/article/c3394bec46014761acc1dfbf13b2b1fc
Publikováno v:
Communications in Statistics - Theory and Methods. 49:4506-4519
One of the basic statistical methods of dimensionality reduction is analysis of discriminant coordinates given by Fisher (1936) and Rao (1948). The space of discriminant coordinates is a space conv...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1aafebae894177bcd8242684749971cc
https://doi.org/10.1080/03610926.2019.1602650
https://doi.org/10.1080/03610926.2019.1602650
Publikováno v:
Wiadomości Statystyczne. The Polish Statistician. 62:19-37
The article aims to examine the relations between expenditure on alcoholic beverages and tobacco and other consumer expenditure of households in 27 European countries within 2000—2010. The choice of countries and time series was determined by the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d15ffd7eab20e7a652bd02ebf962899f
https://doi.org/10.5604/01.3001.0014.0897
https://doi.org/10.5604/01.3001.0014.0897
Publikováno v:
Communications in Statistics - Simulation and Computation. 43:2138-2148
The construction of kernel discriminant coordinates reduces to the solution of a generalized eigenvalue problem in which both matrices are nonnegative definite. Six different algorithms for solving that problem are described, and the performance of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::008f490ec988e5a95755644bf08a9568
https://doi.org/10.1080/03610918.2013.827713
https://doi.org/10.1080/03610918.2013.827713
Publikováno v:
Communications in Statistics - Theory and Methods. 43:1013-1025
In this article we propose a new method of construction of discriminant coordinates and their kernel variant based on the regularization (ridge regression). Moreover, we compare the case of discriminant coordinates, functional discriminant coordinate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::437dafca76fc37aa11e2bc96b93c1ae2
https://doi.org/10.1080/03610926.2013.828074
https://doi.org/10.1080/03610926.2013.828074
Autor:
Mirosław Krzyśko, Łukasz Waszak
Publikováno v:
Biometrical Letters. 50:95-105
Summary Classical canonical correlation analysis seeks the associations between two data sets, i.e. it searches for linear combinations of the original variables having maximal correlation. Our task is to maximize this correlation, and is equivalent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bd7a42f214009a4116617468ef800a6
https://doi.org/10.2478/bile-2013-0020
https://doi.org/10.2478/bile-2013-0020
Publikováno v:
Statistical Papers.
Data in the form of a continuous vector function on a given interval are referred to as multivariate functional data. These data are treated as realizations of multivariate random processes. The paper is devoted to three statistical dimension reducti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4bef1c8daa253750cd40857b49ab854