Search Results - isPartOf:"Software"

Robust Likelihood-Based Survival Modeling with Microarray Data

Cho, HyungJun; Yu, Ami; Kim, Sukwoo; Kang, Jaewoo; … - In: Journal of Statistical Software 29 (2009) i01

, sophisticated methods and software programs have been developed to overcome the high-dimensional difficulty of microarray data …. Nevertheless, new algorithms and software programs are needed to include practical functions such as the discovery of multiple sets … statisticians are familiar with. For survival modeling with microarray data, we have developed a software program (called rbsurv …

Persistent link: https://www.econbiz.de/10008460771

Fechnerian Scaling in R: The Package fechner

Ünlü, Ali; Kiefer, Thomas; Dzhafarov, Ehtibar N. - In: Journal of Statistical Software 31 (2009) i06

Fechnerian scaling is a procedure for constructing a metric on a set of objects (e.g., colors, symbols, X-ray films, or even statistical models) to represent dissimilarities among the objects "from the point of view" of a system (e.g., person, technical device, or even computational algorithm)...

Persistent link: https://www.econbiz.de/10008460772

MetaEasy: A Meta-Analysis Add-In for Microsoft Excel

Kontopantelis, Evangelos; Reeves, David - In: Journal of Statistical Software 30 (2009) i07

in specialised meta-analysis software packages and in mainstream statistical packages that have to rely on user …

Persistent link: https://www.econbiz.de/10008460774

PSAgraphics: An R Package to Support Propensity Score Analysis

Helmreich, James E.; Pruzek, Robert M. - In: Journal of Statistical Software 29 (2009) i06

Propensity score analysis is a technique for adjusting for selection bias in observational data. Estimated propensity scores (probability of treatment given observed covariates) are used for stratification of observations. Within strata covariates should be more balanced between the two...

Persistent link: https://www.econbiz.de/10008460777

Gifi Methods for Optimal Scaling in R: The Package homals

Leeuw, Jan de; Mair, Patrick - In: Journal of Statistical Software 31 (2009) i04

Homogeneity analysis combines the idea of maximizing the correlations between variables of a multivariate data set with that of optimal scaling. In this article we present methodological and practical issues of the R package homals which performs homogeneity analysis and various extensions. By...

Persistent link: https://www.econbiz.de/10008460780

Structural Adaptive Smoothing in Diffusion Tensor Imaging: The R Package dti

Polzehl, Jörg; Tabelow, Karsten - In: Journal of Statistical Software 31 (2009) i09

Diffusion weighted imaging has become and will certainly continue to be an important tool in medical research and diagnostics. Data obtained with diffusion weighted imaging are characterized by a high noise level. Thus, estimation of quantities like anisotropy indices or the main diffusion...

Persistent link: https://www.econbiz.de/10008460786

Response-Surface Methods in R, Using rsm

Lenth, Russell V. - In: Journal of Statistical Software 32 (2009) i07

This article describes the recent package rsm, which was designed to provide R support for standard response-surface methods. Functions are provided to generate central-composite and Box-Behnken designs. For analysis of the resulting data, the package provides for estimating the response...

Persistent link: https://www.econbiz.de/10008460787

From Spider-Man to Hero - Archetypal Analysis in R

Eugster, Manuel J. A.; Leisch, Friedrich - In: Journal of Statistical Software 30 (2009) i08

Archetypal analysis has the aim to represent observations in a multivariate data set as convex combinations of extremal points. This approach was introduced by Cutler and Breiman (1994); they defined the concrete problem, laid out the theoretical foundations and presented an algorithm written in...

Persistent link: https://www.econbiz.de/10008460788

Multi-Objective Optimal Experimental Designs for ER-fMRI Using MATLAB

Kao, Ming-Hung - In: Journal of Statistical Software 30 (2009) i11

Designs for event-related functional magnetic resonance imaging (ER-fMRI) that help to efficiently achieve the statistical goals while taking into account the psychological constraints and customized requirements are in great demand. This is not only because of the popularity of ER-fMRI but also...

Persistent link: https://www.econbiz.de/10008460789

Blocking Mixed-Level Factorials with SAS

Lawson, John; Schaalje, G. Bruce; Collings, Bruce Jay - In: Journal of Statistical Software 32 (2009) c01

Persistent link: https://www.econbiz.de/10008460793