A fast version of the Rapid Automatic Keyword Extraction (RAKE) algorithm
You can get the stable version on CRAN:
install.packages("rapidraker")The development version of the package requires you to compile the
latest Java source code in rapidrake-java, so
installing it is not as simple as making a call to
devtools::install_github().
rapidraker?rapidraker is an R package that provides an
implementation of the same keyword extraction algorihtm (RAKE) as
slowraker. However, rapidraker::rapidrake() is
written in Java, whereas slowraker::slowrake() is written
in R. This means that you can expect rapidrake() to be
considerably faster than slowrake().
rapidrake() has the same arguments as
slowrake(), and both functions output the same type of
object. You can therefore substitue rapidrake() for
slowraker() without making any additional changes to your
code.
library(slowraker)
library(rapidraker)
data("dog_pubs")
rakelist <- rapidrake(txt = dog_pubs$abstract[1:5])rapidrake() 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 :22 ...
#> ..$ stem :"current dog suitabl assess focus" ...
#> #...With 3 more data frames.You can bind these data frames together using
slowaker::rbind_rakelist():
rakedf <- rbind_rakelist(rakelist, doc_id = dog_pubs$doi[1:5])
head(rakedf, 5)
#> doc_id keyword freq score stem
#> 1 10.1371/journal.pone.0132820 assistance dog identification tags 1 10.8 assist dog identif tag
#> 2 10.1371/journal.pone.0132820 animal control facilities 1 9.0 anim control facil
#> 3 10.1371/journal.pone.0132820 emotional support animals 1 9.0 emot support anim
#> 4 10.1371/journal.pone.0132820 small body sizes 1 9.0 small bodi size
#> 5 10.1371/journal.pone.0132820 seemingly inappropriate dogs 1 7.9 seem inappropri dogslowraker and
rapidraker, head over to slowraker’s webpage.