Naslov (eng)

Generalized stem profile model based on neural networks

Naslov (srp)

Generalizovan model profilne funkcije debla baziran na neuronskim mrežama

Autor

Radonja, Pero

Publisher

Opis (srp)

Izvod: Generalizovan model profilne funkcije debla nalazi primenu kod inventure šuma i služi da se što tačnije odredi zapremina i sortimentna struktura dubećih stabala i celih sastojina u nekom regionu. U ovom radu predloženo je da se generalizovan model dobije kao srednja rednost normalizovanih individualnih, pojedinačnih modela profilne funkcije. Individualni modeli su dobijeni koristeći neuronske mreže, NM, pri čemu su korišćeni programi koji se nalaze u programskom paketu MATLAB. Izračunate su zapremine na bazi ovako dobijenog generalizovanog modela a zatim posebno i referentne zapremine. Referntne zapremine su izračunate koristeći profilne funkcije koje su dobijene na bazi modifikovane Brinkove funkcije, MBF. Regresionim postupkom izvršeno je za posmatrani region, poređenje veličina svih ovako dobijenih zapremina.

Opis (eng)

Abstract: Generalized stem profile model is used in forest inventory and serves for the more accurate determination of volume and assortment structure of standing trees and whole stands in some region. It is suggested in this paper that the generalized model should be obtained as the mean value of the normalized, individual, separate profile function models. The individual models are obtained by the use of neural network, NN, for which the programs from the program package MATLAB were used. The volumes based on the generalized model obtained in this way were also calculated, and then the referent volumes were calculated in a separate way. The referent volumes were calculated by the use of profile functions obtained by the application of modified Brink’s function, MBF. The values of the volumes obtained in these two different way, were compared by regression method, for all the trees in the observed region.

Jezik

engleski

Datum

2008

Licenca

© All rights reserved

Predmet

Key words: generalized stem profile function, neural networks, standard modelling error

Ključne reči: generalizovana profilna funkcija debla, neuronske mreže, standardna greška modeliranja.

Deo kolekcije (2)

	o:6206	Zbornik Radova Instituta za šumarstvo
	o:1347	Radovi Instituta za šumarstvo