randomsearch v0.2.0

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Random Search for Expensive Functions

Simple Random Search function for the 'smoof' and 'ParamHelpers' ecosystem with termination criteria and parallelization.

Readme


output: md_document:

variant: markdown_github

randomsearch

CRAN_Status_Badge Build Status Build status Coverage Status Monthly RStudio CRAN Downloads

Random Search for Expensive Functions

Simple Random Search function for the smoof and ParamHelpers ecosystem with termination criteria and parallelization.

Installation

We recommend to install the official release version:

install.packages("randomsearch")

For experimental use you can install the latest development version:

devtools::install_github("jakob-r/randomsearch")

Usage

obj.fun = makeSingleObjectiveFunction(
  fn = function(x) x[1]^2 + sin(x[2]),
  par.set = makeNumericParamSet(len = 2, lower = -1, upper = 2),
  minimize = TRUE
)
res = randomsearch(obj.fun, max.evals = 10)
ind = getOptPathBestIndex(res)
getOptPathEl(res, ind)
## $x
## $x$x
## [1] -0.2617368 -0.8738214
## 
## 
## $y
##          y 
## -0.6982813 
## 
## $dob
## [1] 9
## 
## $eol
## [1] NA
## 
## $exec.time
## [1] 0
as.data.frame(res)
##             x1         x2          y dob eol exec.time
## 1  -0.13726744  1.3649154  0.9977236   1  NA     0.001
## 2   0.22693077  1.6490522  1.0484371   2  NA     0.002
## 3   1.82140185 -0.8633305  2.5574934   3  NA     0.000
## 4   0.58431646  1.6772571  1.3357641   4  NA     0.000
## 5   0.65430504  0.3698442  0.7895853   5  NA     0.000
## 6   1.87050004  0.3600025  3.8510469   6  NA     0.000
## 7   1.03271191  0.7179002  1.7242985   7  NA     0.000
## 8  -0.69122595  1.6994749  1.4695256   8  NA     0.000
## 9  -0.26173680 -0.8738214 -0.6982813   9  NA     0.000
## 10 -0.01623784  1.8635109  0.9577278  10  NA     0.000

Functions in randomsearch

Name Description
randomsearch Optimizes a function with random search.
summary.RandomsearchResult Generate result summary
No Results!

Vignettes of randomsearch

Name
randomsearch.Rmd
No Results!

Last month downloads

Details

License BSD_2_clause + file LICENSE
URL https://github.com/jakob-r/randomsearch
BugReports https://github.com/jakob-r/randomsearch/issues
LazyData yes
Encoding UTF-8
ByteCompile yes
RoxygenNote 6.1.1
VignetteBuilder knitr
NeedsCompilation no
Packaged 2019-01-17 12:07:05 UTC; richter
Repository CRAN
Date/Publication 2019-01-17 12:50:03 UTC

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