Inderscience Publishers

Group method of data handling (GMDH) application for modelling of mechanical properties of trees irrigated with wastewater

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Experiments have been carried out to identify the mechanical properties of trees irrigated with wastewater, as well as mathematical modelling of measurement results via the group method of data handling (GMDH) method. Eucalyptus trees were cultivated and irrigated with processed wastewater from a treatment plant. Characteristics of wood quality (axial compression and bending, etc.) were measured and compared with those obtained for trees irrigated in a common way. The paper analyses the features of the GMDH method to adaptively estimate non-linear relationships between input and output variables. Modelling results are described and presented as plots and formulae. Other requirements for modelling tools are discussed: flexibility to adapt to new experimental results, and explicit representation of estimated input–output relationships to provide data structuring.

Keywords: GMDH, group method of data handling, mathematical modelling, mechanical properties, wastewater, wood quality, eucalyptus trees, irrigation

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