Coding Sound Files for Use with NDL (AcousticNDLCodeR)
Make acoustic cues to use with the R packages ‘ndl’ or ‘ndl2’. The package implements functions used in the PLOS ONE paper: Denis Arnold, Fabian Tomaschek, Konstantin Sering, Florence Lopez, and R. Harald Baayen (accepted). Words from spontaneous conversational speech can be recognized with human-like accuracy by an error-driven learning algorithm that discriminates between meanings straight from smart acoustic features, bypassing the phoneme as recognition unit. PLOS ONE More details can be found in the paper and the supplement. ‘ndl’ is available on CRAN. ‘ndl2’ is available by request from <konstantin.sering@uni-tuebingen.de>.

Schedule R Scripts and Processes with the ‘cron’ Job Scheduler (cronR)
Create, edit, and remove ‘cron’ jobs on your unix-alike system. The package provides a set of easy-to-use wrappers to ‘crontab’. It also provides an RStudio add-in to easily launch and schedule your scripts.

Evaluation of Classification Model Options (modeval)
Designed to assist novice to intermediate analysts in choosing an optimal classification model, particularly for working with relatively small data sets. It provides cross-validated results comparing several different models at once using a consistent set of performance metrics, so users can hone in on the most promising approach rather than attempting single model fittings at a time. The package predefined 12 most common classification models, although users are free to select from the 200+ other options available in caret package.

Fitting Frailty Models with the EM Algorithm (frailtyEM)
Contains functions for fitting shared frailty models with a semi-parametric baseline hazard with the Expectation-Maximization algorithm. Supported data formats include clustered failures with left truncation and recurrent events in gap-time or Andersen-Gill format. Several frailty distributions, such as the the gamma, positive stable and the Power Variance Family are supported.

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