Search Results - isPartOf:"Software"

actuar: An R Package for Actuarial Science

Dutang, Christophe; Goulet, Vincent; Pigeon, Mathieu - In: Journal of Statistical Software 25 (2008) i07

actuar is a package providing additional Actuarial Science functionality to the R statistical system. The project was launched in 2005 and the package is available on the Comprehensive R Archive Network since February 2006. The current version of the package contains functions for use in the...

Persistent link: https://www.econbiz.de/10008460767

Unified Geostatistical Modeling for Data Fusion and Spatial Heteroskedasticity with R Package ramps

Smith, Brian J.; Yan, Jun; Cowles, Mary Kathryn - In: Journal of Statistical Software 25 (2008) i10

This article illustrates usage of the ramps R package, which implements the reparameterized and marginalized posterior sampling (RAMPS) algorithm for complex Bayesian geostatistical models. The RAMPS methodology allows joint modeling of areal and point-source data arising from the same...

Persistent link: https://www.econbiz.de/10008460768

PresenceAbsence: An R Package for Presence Absence Analysis

Freeman, Elizabeth A.; Moisen, Gretchen - In: Journal of Statistical Software 23 (2008) i11

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...

Persistent link: https://www.econbiz.de/10008460773

Arbitrary Precision Mathematica Functions to Evaluate the One-Sided One Sample K-S Cumulative Sampling Distribution

Brown, J. Randall; Harvey, Milton E. - In: Journal of Statistical Software 26 (2008) i03

Efficient rational arithmetic methods that can exactly evaluate the cumulative sampling distribution of the one-sided one sample Kolmogorov-Smirnov (K-S) test have been developed by Brown and Harvey (2007) for sample sizes n up to fifty thousand. This paper implements in arbitrary precision the...

Persistent link: https://www.econbiz.de/10008460775

Exact Tests for Two-Way Contingency Tables with Structural Zeros

West, Luke J.; Hankin, Robin K. S. - In: Journal of Statistical Software 28 (2008) i11

Fisher's exact test, named for Sir Ronald Aylmer Fisher, tests contingency tables for homogeneity of proportion. This paper discusses a generalization of Fisher's exact test for the case where some of the table entries are constrained to be zero. The resulting test is useful for assessing cases...

Persistent link: https://www.econbiz.de/10008460776

Getting Things in Order: An Introduction to the R Package seriation

Hahsler, Michael; Hornik, Kurt; Buchta, Christian - In: Journal of Statistical Software 25 (2008) i03

Seriation, i.e., finding a suitable linear order for a set of objects given data and a loss or merit function, is a basic problem in data analysis. Caused by the problem's combinatorial nature, it is hard to solve for all but very small sets. Nevertheless, both exact solution methods and...

Persistent link: https://www.econbiz.de/10008460778

GLUMIP 2.0: SAS/IML Software for Planning Internal Pilots

Kairalla, John A.; Coffey, Christopher S.; Muller, Keith E. - In: Journal of Statistical Software 28 (2008) i07

version of our free SAS/IML software for planning internal pilot studies in the general linear univariate model (GLUM …) framework. The new analytic forms incorporated into the updated software solve many problems inherent to current internal pilot … techniques for linear models with Gaussian errors. Hence, the GLUMIP 2.0 software makes it easy to perform exact power analysis …

Persistent link: https://www.econbiz.de/10008460783

A statnet Tutorial

Goodreau, Steven M.; Handcock, Mark S.; Hunter, David R.; … - In: Journal of Statistical Software 24 (2008) i09

The statnet suite of R packages contains a wide range of functionality for the statistical analysis of social networks, including the implementation of exponential-family random graph (ERG) models. In this paper we illustrate some of the functionality of statnet through a tutorial analysis of a...

Persistent link: https://www.econbiz.de/10008460796

Fitting Latent Cluster Models for Networks with latentnet

Krivitsky, Pavel N.; Handcock, Mark S. - In: Journal of Statistical Software 24 (2008) i05

latentnet is a package to fit and evaluate statistical latent position and cluster models for networks. Hoff, Raftery, and Handcock (2002) suggested an approach to modeling networks based on positing the existence of an latent space of characteristics of the actors. Relationships form as a...

Persistent link: https://www.econbiz.de/10008460797

Invariant and Metric Free Proximities for Data Matching: An R Package

Iacus, Stefano; Porro, Giuseppe - In: Journal of Statistical Software 25 (2008) i11

methods require at most the notion of ordering. An open-source software in the form of a R package is also presented. …

Persistent link: https://www.econbiz.de/10008460798