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Koen Van de Moortel

Koen Van de Moortel
independent math & physics tutor

Master of Science
Open for challenges: do you have questions about measuring methodology, modeling, regression? Ask me! No cure, no pay.

About

11
Publications
17,983
Reads
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2
Citations
Citations since 2017
11 Research Items
2 Citations
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Introduction
Experimental physicist, looking for professional challenges. 2021: finished writing a book about measuring methodology and regression analysis + software, for students and teachers, in my native language: Dutch. See: book: www.lerenisplezant.be/metenisweten.htm software: www.lerenisplezant.be/fitting.htm If a publisher is interested, I can translate the book in English.
Additional affiliations
January 1990 - June 2020
Many schools
Position
  • math/physics teacher
Education
September 1984 - June 1988
Ghent University
Field of study
  • Experimental physics

Publications

Publications (11)
Data
FittingKVdm 1.14 has been released! There are many software programs that do regression analysis (curve fitting), BUT only this one makes optimal use of the symmetry whenever dependent and independent variables can be switched! This will definitely improve your scientific modeling or calibration work! And in most cases it will estimate good initial...
Data
(European) shoe sizes of adults versus their height (126 men and 242 women, mostly from Belgium and Holland, Feb. 2023) - an educational example of my regression software "FittingKVdm".
Data
Software manual version 1.9, with more models and examples.
Method
Full-text available
Two methods for finding the "best" curve fitting through a set of data points are evaluated here: "multidirectional" and "ordinary" least squares regression (MDLS and OLS). The same artificial datasets with several amplitudes of generated noise were fed to both algorithms and the results were compared.
Method
Full-text available
This real life example shows why Multidirectional regression is better than the classical method (OLS): it treats the so-called independent and dependent variables equally.
Method
Full-text available
Does a person unconsciously improve his psychomotor while performing a simple task like throwing a pebble? Apparently he/she does, at least with our test person. The hypothesis was tested with 3 different methods: comparing averages, Kendall's tau, and regression.
Method
Full-text available
Regression analysis software manual with many real life examples from various sciences.
Preprint
Full-text available
The so-called 'least squares regression' for mathematical modeling is a widely used technique. It's so common that one might think nothing could be improved to the algorithm anymore. But it can. By minimizing the squares of the differences between measured and predicted values not only in the vertical, but also in the horizontal direction. I call t...
Method
Full-text available
The article shows an improvement for the well-known least squares regression analysis is possible in the case of invertible functions.
Method
Full-text available
For non-linear regression, often the logarithms of the variables are taken, to reduce the problem to a linear regression. With some examples, I explain you why this is not such a good idea.

Questions

Questions (2)