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dc.contributor.authorComas Rodríguez, Carlos
dc.contributor.authorMateu, Jorge
dc.identifier.citationCOMAS RODRÍGUEZ, Carlos; MATEU, Jorge. Statistical inference for Gibbs point processes based on field observations. Stochastic Environmental Research and Risk Assesment (2011), v. 25, issue 2, pp. 287-300ca_CA
dc.description.abstractForest inventories are mostly based on field observations, and complete records of spatial tree coordinates are seldom taken. The lack of individual coordinates prevents the use of well stablised statistical inference tools based on the likelihood function. However, the Takacs–Fiksel approach, based on equating two expectations derived from different measures, can be used routinely without any measurement of tree coordinates, just by considering nearest neighbour measurements and the counting of trees at some random positions. Despite this, little attention has been paid to the Takacs–Fiksel method in terms of the type of test function and the type of field observation data considered. Motivated by problems based on field observations, we present a simulation study to analyse and illustrate the quality of the parameter estimates for this estimation approach under distinct simulated scenarios, where several test functions and distinct forest sampling designs are taken into account. Indeed, the type of the chosen test function affects the resulting estimates in terms of the forest field observation considered.ca_CA
dc.description.sponsorShipC. Comas was supported during 2009–2010 by a “Juan de la Cierva” contract from the Spanish Government. This research has been supported by the Spanish Ministry of Education and Science (MTM2007-62923).ca_CA
dc.format.extent14 p.ca_CA
dc.relation.isPartOfStochastic Environmental Research and Risk Assesment (2011), v. 25, issue 2ca_CA
dc.subjectForest field observationsca_CA
dc.subjectForest samplingca_CA
dc.subjectMonte Carlo simulationca_CA
dc.subjectNearest neighbour measurementsca_CA
dc.subjectPairwise interaction point processesca_CA
dc.subjectSpatial point patternsca_CA
dc.subjectTakacs–Fiksel methodca_CA
dc.titleStatistical inference for Gibbs point processes based on field observationsca_CA

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