6 papers
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…