如何从 R 访问维基百科？

R 是否有任何包允许查询维基百科（最有可能使用 Mediawiki API）来获取与此类查询相关的可用文章列表，以及导入选定的文章以进行文本挖掘？

有WikipediR, 'R 中的 MediaWiki API 包装器'

library(devtools)
install_github("Ironholds/WikipediR")
library(WikipediR)

它包括以下功能：

ls("package:WikipediR")
 [1] "wiki_catpages"      "wiki_con"           "wiki_diff"          "wiki_page"         
 [5] "wiki_pagecats"      "wiki_recentchanges" "wiki_revision"      "wiki_timestamp"    
 [9] "wiki_usercontribs"  "wiki_userinfo"  

这里正在使用它，获取一堆用户的贡献详细信息和用户详细信息：

library(RCurl)
library(XML)

# scrape page to get usernames of users with highest numbers of edits
top_editors_page <- "http://en.wikipedia.org/wiki/Wikipedia:List_of_Wikipedians_by_number_of_edits"
top_editors_table <- readHTMLTable(top_editors_page)
very_top_editors <- as.character(top_editors_table[[3]][1:5,]$User)

# setup connection to wikimedia project 
con <- wiki_con("en", project = c("wikipedia"))

# connect to API and get last 50 edits per user
user_data <- lapply(very_top_editors,  function(i) wiki_usercontribs(con, i) )
# and get information about the users (registration date, gender, editcount, etc)
user_info <- lapply(very_top_editors,  function(i) wiki_userinfo(con, i) )