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Artículo

A comparison of two sensitivity analysis techniques based on four bayesian models representing ecosystem services provision in the Argentine Pampas

Rositano, FlorenciaIcon ; Piñeiro, GervasioIcon ; Bert, Federico EstebanIcon ; Ferraro, Diego OmarIcon
Fecha de publicación: 09/2017
Editorial: Elsevier Science
Revista: Ecological Informatics
ISSN: 1574-9541
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Agricultura

Resumen

Sensitivity analyses (SAs) identify how an output variable of a model is modified by changes in the input variables. These analyses are a good way for assessing the performance of probabilistic models, like Bayesian Networks (BN). However, there are several commonly used SAs in BN literature, and formal comparisons about their outcomes are scarce. We used four previously developed BNs which represent ecosystem services provision in Pampean agroecosystems (Argentina) in order to test two local sensitivity approaches widely used. These SAs were: 1) One-at-a-time, used in BNs but more commonly in linear modelling; and 2) Sensitivity to findings, specific to BN modelling. Results showed that both analyses provided an adequate overview of BN behaviour. Furthermore, analyses produced a similar influence ranking of input variables over each output variable. Even though their interchangeably application could be an alternative in our bayesian models, we believe that OAT is the suitable one to implement here because of its capacity to demonstrate the relation (positive or negative) between input and output variables. In summary, we provided insights about two sensitivity techniques in BNs based on a case study which may be useful for ecological modellers.
Palabras clave: Bayesian Networks , One-At-A-Time , Probabilistic Models , Sensitivity Analyses , Sensitivity to Findings
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/65995
URL: http://linkinghub.elsevier.com/retrieve/pii/S1574954116301911
DOI: https://dx.doi.org/10.1016/j.ecoinf.2017.07.005
Colecciones
Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Rositano, Florencia; Piñeiro, Gervasio; Bert, Federico Esteban; Ferraro, Diego Omar; A comparison of two sensitivity analysis techniques based on four bayesian models representing ecosystem services provision in the Argentine Pampas; Elsevier Science; Ecological Informatics; 41; 9-2017; 33-39
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