3 citations · 6 across the 5 of their papers we have counts for
12 papers
On the Correlation between Random Variables and their Principal Components
Zenon Gniazdowski
The article attempts to find an algebraic formula describing the correlation coefficients between random variables and the principal components representing them. As a result of th…
On the Analysis of Correlation Between Nominal Data and Numerical Data
Zenon Gniazdowski
The article investigates the possibility of measuring the strength of a linear correlation relationship between nominal data and numerical data. Correlation coefficients for variab…
Principal Component Analysis versus Factor Analysis
Zenon Gniazdowski
The article discusses selected problems related to both principal component analysis (PCA) and factor analysis (FA). In particular, both types of analysis were compared. A vector i…
Detection of a Source Code Plagiarism in a Student Programming Competition
Zenon Gniazdowski, Maciej Boniecki
The article presents a system for testing the independence of solutions to algorithmic problems sent by students as part of the student programming competition. First, the context…
Extension of the one-dimensional Stoney algorithm to a two-dimensional case
Zenon Gniazdowski
This article presents the extension of the one-dimensional Stoney algorithm to a two-dimensional case. The proposed extension consists in modifying the method of curvature estimati…
On the clustering of correlated random variables
Zenon Gniazdowski, Dawid Kaliszewski
In this work, the possibility of clustering correlated random variables was examined, both because of their mutual similarity and because of their similarity to the principal compo…
New Interpretation of Principal Components Analysis
Zenon Gniazdowski
A new look on the principal component analysis has been presented. Firstly, a geometric interpretation of determination coefficient was shown. In turn, the ability to represent the…
Modeling of gas sample behavior in gas chromatography column
Zenon Gniazdowski, Pawel Kowalski
The equilibrium-dispersive model of the linear GC (gas chromatography) was derived using both assumptions and the method of its derivation different from the known in literature. I…
New approach to exact extraction of piezoresistance coefficient
Zenon Gniazdowski, Bogdan Latecki, Pawel Kowalski
The extension of piezoresistance coefficient extraction method was proposed, for protection from errors in estimation of the thickness of the test structure membrane. This new appr…
Conditioning of Piezoresistance Coefficient Extraction
Zenon Gniazdowski, Jan Koszur, Pawel Kowalski
The necessary and sufficient condition for the piezoresistance coefficient extraction and conditioning of the extraction problem are considered as a problem of the certain matrix A…
Numerical Coding of Nominal Data
Zenon Gniazdowski, Michal Grabowski
In this paper, a novel approach for coding nominal data is proposed. For the given nominal data, a rank in a form of complex number is assigned. The proposed method does not lose a…
Behavioral modeling of stressed MOSFET
Zenon Gniazdowski
In this paper piezoconductivity phenomenon in MOSFET channel is discussed and extension of drain current model with possibility of stress consideration is proposed. Analysis of obt…