Cited by 461

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PresenceAbsence : An R Package for Presence Absence Analysis

Freeman, Elizabeth A., Moisen, Gretchen·2008·Journal of Statistical Software

Abstract

The PresenceAbsence package for R provides a set of functions useful when evaluating the results of presence-absence analysis, for example, models of species distribution or the analysis of diagnostic tests. The package provides a toolkit for selecting the optimal threshold for translating a probability surface into presence-absence maps specifically tailored to their intended use. The package includes functions for calculating threshold dependent measures such as confusion matrices, percent correctly classified (PCC), sensitivity, specificity, and Kappa, and produces plots of each measure as the threshold is varied. It also includes functions to plot the Receiver Operator Characteristic (ROC) curve and calculates the associated area under the curve (AUC), a threshold independent measure of model quality. Finally, the package computes optimal thresholds by multiple criteria, and plots these optimized thresholds on the graphs.

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Crossref · 10.18637/jss.v023.i11

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  • A probability threshold value for predicting terra preta presence and absence was generated based on maximizing the percentage of sites correctly classified.

    “A probability threshold value for predicting terra preta presence and absence was generated based on maximizing the percentage of sites correctly classified [51].”

    From Predicting pre-columbian anthropogenic soils in amazonia (2014) · cites this paper as [51]

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Metadata

Authors
Freeman, E. A., & Moisen, G.
Venue
Journal of Statistical Software
Published
2008
Volume
23
Issue
11
ISSN
1548-7660
Cited by
461
References
2
Language
en

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