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Two-stage modelling of random phenomena

Publication date: 12.2015

Geoinformatica Polonica, 2015, Vol. 14 (2015), pp. 41 - 49

Authors

Anna M. Barańska
Faculty of Mining Surveying and Environmental Engineering, AGH University of Krakow
https://orcid.org/0000-0002-6426-4115 Orcid
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Titles

Two-stage modelling of random phenomena

Abstract

The main objective of this publication was to present a two-stage algorithm of modelling random phenomena, based on multidimensional function modelling, on the example of modelling the real estate market for the purpose of real estate valuation and estimation of model parameters of foundations vertical displacements. The fi rst stage of the presented algorithm includes a selection of a suitable form of the function model. In the classical algorithms, based on function modelling, prediction of the dependent variable is its value obtained directly from the model. The better the model refl ects a  relationship between the independent variables and their effect on the dependent variable, the more reliable is the model value. In this paper, an algorithm has been proposed which comprises adjustment of the value obtained from the model with a random correction determined from the residuals of the model for these cases which, in a separate analysis, were considered to be the most similar to the object for which we want to model the dependent variable. The effect of applying the developed quantitative procedures for calculating the corrections and qualitative methods to assess the similarity on the fi nal outcome of the prediction and its accuracy, was examined by statistical methods, mainly using appropriate parametric tests of signifi cance. The idea of the presented algorithm has been designed so as to approximate the value of the dependent variable of the studied phenomenon to its value in reality and, at the same time, to have it “smoothed out” by a well fi tted modelling function.

References

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Barańska A. 2004. Kryteria stosowania modeli stochastycznych w predykcji rynkowej wartości nieruchomości. Rozprawa doktorska. AGH. Kraków

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Information

Information: Geoinformatica Polonica, 2015, Vol. 14 (2015), pp. 41 - 49

Article type: Original article

Titles:

English:

Two-stage modelling of random phenomena

Polish: Dwuetapowe modelowanie zjawisk losowych

Authors

https://orcid.org/0000-0002-6426-4115

Anna M. Barańska
Faculty of Mining Surveying and Environmental Engineering, AGH University of Krakow
https://orcid.org/0000-0002-6426-4115 Orcid
All publications →

Faculty of Mining Surveying and Environmental Engineering, AGH University of Krakow

Published at: 12.2015

Article status: Open

Licence: None

Percentage share of authors:

Anna M. Barańska (Author) - 100%

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Publication languages:

English

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