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walkr (version 0.3.3)

Random Walks in the Intersection of Hyperplanes and the N-Simplex

Description

Consider the intersection of two spaces: the complete solution space to Ax = b and the N-simplex. The intersection of these two spaces is a non-negative convex polytope. The package walkr samples from this intersection using two Monte-Carlo Markov Chain (MCMC) methods: hit-and-run and Dikin walk. walkr also provide tools to examine sample quality.

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Install

install.packages('walkr')

Monthly Downloads

2

Version

0.3.3

License

GPL-3

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Maintainer

Andy Yao

Last Published

August 27th, 2015

Functions in walkr (0.3.3)

walkr

The walkr package.
rcppeigen_fsolve

Fast Matrix Inverse
dikin_walk

Dikin Walk
rcppeigen_fprod

Fast Matrix Product
start_point

start point
rcppeigen_ftcrossprod

Fast Matrix T-Cross-Product
calc_rhat

R hat
rcppeigen_fdet

Fast Matrix Determinant
hit_and_run

Hit and Run
complete_solution

Complete Solution
rcppeigen_fcrossprod

Fast Matrix Cross-Product
rcppeigen_ftrans

Fast Matrix Transpose
explore_walkr

Explore Walkr