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txtplot - Text Based Plots

Provides functions to produce rudimentary ascii graphics directly in the terminal window. Provides a basic plotting function (and equivalents of curve, density, acf and barplot) as well as boxplot and image functions.

Last updated

6.22 score 33 stars 3 dependents 111 scripts 865 downloads

crossdes - Construction of Crossover Designs

Contains functions for the construction of carryover balanced crossover designs. In addition contains functions to check given designs for balance.

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3.74 score 1 stars 9 dependents 54 scripts 1.3k downloads

SEL - Semiparametric Elicitation

Implements a method for fitting a bounded probability distribution to quantiles (for example stated by an expert), see Bornkamp and Ickstadt (2009) for details. For this purpose B-splines are used, and the density is obtained by penalized least squares based on a Brier entropy penalty. The package provides methods for fitting the distribution as well as methods for evaluating the underlying density and cdf. In addition methods for plotting the distribution, drawing random numbers and calculating quantiles of the obtained distribution are provided.

Last updated

3.50 score 2 dependents 53 scripts 343 downloads

gsbDesign - Group Sequential Bayes Design

Group Sequential Operating Characteristics for Clinical, Bayesian two-arm Trials with known Sigma and Normal Endpoints, as described in Gerber and Gsponer (2016) <doi: 10.18637/jss.v069.i11>.

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2.48 score 3 stars 4 scripts 225 downloads

iterLap - Approximate Probability Densities by Iterated Laplace Approximations

The iterLap (iterated Laplace approximation) algorithm approximates a general (possibly non-normalized) probability density on R^p, by repeated Laplace approximations to the difference between current approximation and true density (on log scale). The final approximation is a mixture of multivariate normal distributions and might be used for example as a proposal distribution for importance sampling (eg in Bayesian applications). The algorithm can be seen as a computational generalization of the Laplace approximation suitable for skew or multimodal densities.

Last updated

1.00 score 5 scripts 213 downloads