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A slow version of the Rapid Automatic Keyword Extraction (RAKE) algorithm
You can get the stable version from CRAN:
install.packages("slowraker")
Or the development version from GitHub:
if (!require(devtools)) install.packages("devtools")
::install_github("crew102/slowraker") devtools
There is one main function in the slowraker
package -
slowrake()
. slowrake()
extracts keywords from
a vector of documents using the RAKE algorithm. This algorithm doesn’t
require any training data, so it’s super easy to use:
library(slowraker)
data("dog_pubs")
<- slowrake(txt = dog_pubs$abstract[1:5]) rakelist
#> Warning: package 'slowraker' was built under R version 3.4.2
slowrake()
outputs a list of data frames. Each data
frame contains the keywords that were extracted for an element of
txt
:
rakelist#>
#> # A rakelist containing 5 data frames:
#> $ :'data.frame': 61 obs. of 4 variables:
#> ..$ keyword:"assistance dog identification tags" ...
#> ..$ freq :1 1 ...
#> ..$ score :11 ...
#> ..$ stem :"assist dog identif tag" ...
#> $ :'data.frame': 90 obs. of 4 variables:
#> ..$ keyword:"current dog suitability assessments focus" ...
#> ..$ freq :1 1 ...
#> ..$ score :21 ...
#> ..$ stem :"current dog suitabl assess focu" ...
#> #...With 3 more data frames.
You can bind these data frames together using
rbind_rakelist()
:
<- rbind_rakelist(rakelist = rakelist, doc_id = dog_pubs$doi[1:5])
rakedf head(rakedf, 5)
#> doc_id keyword freq score
#> 1 10.1371/journal.pone.0132820 assistance dog identification tags 1 10.8
#> 2 10.1371/journal.pone.0132820 animal control facilities 1 9.0
#> 3 10.1371/journal.pone.0132820 emotional support animals 1 9.0
#> 4 10.1371/journal.pone.0132820 small body sizes 1 9.0
#> 5 10.1371/journal.pone.0132820 seemingly inappropriate dogs 1 7.9
#> stem
#> 1 assist dog identif tag
#> 2 anim control facil
#> 3 emot support anim
#> 4 small bodi size
#> 5 seemingli inappropri dog
slowrake()
, check out the “Getting started” vignette
(vignette("getting-started")
). Frequently asked questions
are answered in the FAQs vignette (vignette("faqs")
).These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.