Using R and RStudio for Data Management, Statistical Analysis, and Graphics, 2nd Edition

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“K23166” — 2015/1/28 — 9:35 — page 202 — #228

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202 CHAPTER 12. CASE STUDIES

12.5 Text mining

12.5.1 Retrieving data from arXiv.org

The aRxiv package facilitates access to arXiv.org, a repository of electronic preprints for a

number of scientific disciplines. It receives many thousands of new submissions each month.

> library(aRxiv)

> library(lubridate)

> library(stringr)

> library(dplyr)

> efron = arxiv_search(query=’au:"Efron" AND cat:stat*’, limit=50)

> names(efron)

[1] "id" "submitted" "updated"

[4] "title" "abstract" "authors"

[7] "affiliations" "link_abstract" "link_pdf"

[10] "link_doi" "comment" "journal_ref"

[13] "doi" "primary_category" "categories" ...