Properties and prediction accuracy of a sigmoid function of time-determinate growth

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F15%3A68484" target="_blank" >RIV/60460709:41320/15:68484 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3832/ifor1243-007" target="_blank" >http://dx.doi.org/10.3832/ifor1243-007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3832/ifor1243-007" target="_blank" >10.3832/ifor1243-007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Properties and prediction accuracy of a sigmoid function of time-determinate growth

Popis výsledku v původním jazyce

The properties and short-term prediction accuracy of mathematical model of sigmoid time-determinate growth, denoted as “KM-function”, are presented. Comparative mathematical analysis of the function revealed that it is a model of asymmetrical sigmoid growth, which starts at zero size of an organism and terminates when it reaches its final size. The function assumes a finite length of the growth period and includes a parameter interpretable as the expected lifespan of the organism. Moreover, the possibility for growth curve inflexion at any age is possible, so the function can be used for modelling of S-shaped growth trajectories with various degree of asymmetry. These good theoretical predispositions for realistic growth predictions were empirically evaluated. The KM-function used in three and four-parameter forms was compared with three classical (Richards, Korf and Weibull) growth functions employing two parameterisation methods - nonlinear least squares (NLS) and Bayesian method. The evaluation wa

Název v anglickém jazyce

Properties and prediction accuracy of a sigmoid function of time-determinate growth

Popis výsledku anglicky

The properties and short-term prediction accuracy of mathematical model of sigmoid time-determinate growth, denoted as “KM-function”, are presented. Comparative mathematical analysis of the function revealed that it is a model of asymmetrical sigmoid growth, which starts at zero size of an organism and terminates when it reaches its final size. The function assumes a finite length of the growth period and includes a parameter interpretable as the expected lifespan of the organism. Moreover, the possibility for growth curve inflexion at any age is possible, so the function can be used for modelling of S-shaped growth trajectories with various degree of asymmetry. These good theoretical predispositions for realistic growth predictions were empirically evaluated. The KM-function used in three and four-parameter forms was compared with three classical (Richards, Korf and Weibull) growth functions employing two parameterisation methods - nonlinear least squares (NLS) and Bayesian method. The evaluation wa

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GK - Lesnictví

OECD FORD obor

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Projekt

<a href="/cs/project/QJ1320230" target="_blank" >QJ1320230: Systémy pro podporu rozhodování v lesním hospodářství s cílem posílení produkčních i mimorpodukčních funkcí lesa</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IForest

ISSN

1971-7458

e-ISSN

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Svazek periodika

2015

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

631-637

Kód UT WoS článku

000366407400001

EID výsledku v databázi Scopus

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