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A Temporal variant-invariant validation approach for agent-based models of landscape dynamics / Christopher Bone in Transactions in GIS, vol 18 n° 2 (April 2014)  

Public [article]  inTransactions in GIS > vol 18 n° 2 (April 2014) . - pp 161 - 182 Titre : A Temporal variant-invariant validation approach for agent-based models of landscape dynamics Type de document : Article/Communication Auteurs : Christopher Bone, Auteur ; Bart Johnson, Auteur ; Max Nielsen-Pincus, Auteur ; Eric Sproles, Auteur ; John Bolte, Auteur Année de publication : 2014 Article en page(s) : pp 161 - 182 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] analyse de variance [Termes IGN] modèle de simulation [Termes IGN] Oregon (Etats-Unis) [Termes IGN] simulation [Termes IGN] système multi-agents Résumé : (Auteur) Agent-based modeling provides a means for addressing the way human and natural systems interact to change landscapes over time. Until recently, evaluation of simulation models has focused on map comparison techniques that evaluate the degree to which predictions match real-world observations. However, methods that change the focus of evaluation from patterns to processes have begun to surface; that is, rather than asking if a model simulates a correct pattern, models are evaluated on their ability to simulate a process of interest. We build on an existing agent-based modeling validation method in order to present a temporal variant-invariant analysis (TVIA). The enhanced method, which focuses on analyzing the uncertainty in simulation results, examines the degree to which outcomes from multiple model runs match some reference to how land use parcels make the transition from one land use class to another over time. We apply TVIA to results from an agent-based model that simulates the relationships between landowner decisions and wildfire risk in the wildland-urban interface of the southern Willamette Valley, Oregon, USA. The TVIA approach demonstrates a novel ability to examine uncertainty across time to provide an understanding of how the model emulates the system of interest. Numéro de notice : A2014-163 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12016 Date de publication en ligne : 09/06/2013 En ligne : https://doi.org/10.1111/tgis.12016 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33068 [article]

An evaluation of internet versus paper-based methods for public participation geographic information Systems (PPGIS) / A. Pocewicz in Transactions in GIS, vol 16 n° 1 (February 2012)  

Public [article]  inTransactions in GIS > vol 16 n° 1 (February 2012) . - pp 39 - 53 Titre : An evaluation of internet versus paper-based methods for public participation geographic information Systems (PPGIS) Type de document : Article/Communication Auteurs : A. Pocewicz, Auteur ; G. Brown, Auteur ; Max Nielsen-Pincus, Auteur ; R. Schnitzer, Auteur Année de publication : 2012 Article en page(s) : pp 39 - 53 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] données localisées des bénévoles [Termes IGN] évaluation des données [Termes IGN] SIG participatif [Termes IGN] support électronique [Termes IGN] support papier [Termes IGN] utilisateur civil [Termes IGN] Wyoming (Etats-Unis) Résumé : (Auteur) Public participation geographic information systems (PPGIS) are an increasingly important tool for collecting spatial information about the social attributes of place. The availability of Internet-based options for implementing PPGIS presents new opportunities for increased efficiency and new modes of access. Here we used a mixed-mode approach to evaluate paper versus Internet mapping methods for the same PPGIS survey in Wyoming. We compared participant characteristics, mapping participation, and the spatial distribution of mapped attributes between participants who responded to the paper versus Internet option. The response rate for those who completed the paper version of the survey was nearly 2.5 times the response rate of the Internet version. Paper participants also mapped significantly more places than did Internet participants (43 vs. 18). Internet participants tended to be younger, more likely to have a college degree, and had lived in the region for less time than paper participants. For all but one attribute there was no difference in the spatial distribution of places mapped between Internet and paper methods. Using a paper-based PPGIS survey resulted in a higher response rate, reduced participant bias, and greater mapping participation. However, survey mode did not influence the spatial distribution of the PPGIS data. Numéro de notice : A2012-097 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2011.01287.x En ligne : https://doi.org/10.1111/j.1467-9671.2011.01287.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31545 [article]