Two hundred five packages made it to CRAN in May, but seven were removed before this post went to print. Here are my “Top40” picks in ten categories: Computational Methods, Data, Genomics, Machine Learning, Medicine, Science, Statistics, Time Series, Utilities, and Visualization.

Computational Methods

madgrad v0.1.0: Implements MADGRAD, a Momentumized, Adaptive Dual Averaged Gradient method for stochastic optimization. See Defazio & …