Daru (Data Analysis in RUby) is a library for analysis, manipulation and visualization of data. Daru works seamlessly accross interpreters and leverages interpreter-specific optimizations whenever they are available. It is the default data storage gem for all the statsample gems (glm, timeseries...

Scientific gems for Ruby. This is the full installation with rigid version constraints.

A suite for basic and advanced statistics on Ruby. Tested on CRuby 1.9.3, 2.0.0 and 2.1.1. See `.travis.yml` for more information. Include: - Descriptive statistics: frequencies, median, mean, standard error, skew, kurtosis (and many others). - Correlations: Pearson's r, Spearman's rank correla...

Proper related posts plugin for Jekyll - uses document correlation matrix on TF-IDF (optionally with Latent Semantic Indexing). Each document is tokenized and stemmed, every word found is treated as keyword for analysis (except for some stop words). TF-IDF matrix for the whole site is calculate...

DataFrame works with NMatrix, Statsample, and Nyaplot

Fit statistical (linear) models with fixed and mixed (random) effects in Ruby

Polychoric and Tetrachoric extensions for Statsample::Bivariate.

This directly implements a ruby version of the arcade learning environment interface.

Neural networks in Ruby and CUDA.

Jekyll plugin to show related posts based on the content, tags, and categories. The similarity is calculated using TF-IDF(term frequency-inverted document frequency). Since tags and categories are use-defined values, those are considered with higher weights than a content while calculating.

Runs Wavefront algorithm to find the shortest path from A to B

Methods for using maximum likelihood calculations to estimate parmeters of ratios of gaussian variates

A Ruby interface for reading and writing NetCDF files. NetCDF-NMatrix is a rewrite of the previous ruby-netcdf gem which uses NMatrix instead of NArray, and so is compatible with SciRuby.

Neuralnet for newbies

For using linear algebra fuctions provided by ATLAS

Extra functions for nmatrix

NMatrix extension for using fuctions provided by FFTW

For using linear algebra fuctions provided by LAPACK and BLAS

Arbitrary row/column selection for NMatrix

RandSVD is a class that performs truncated singular value decomposition using a randomized algorithm.