R多重模糊匹配agrep創建變量

Question

R的新手。我想通過創建一個變量（是/否）來創建測試，以檢查名字或姓氏是否與電子郵件地址模糊匹配。 如果是這樣，請將“ yes”變量附加到該行。

數據示例：

id firstname lastname email address match
1 patrick boyles patrickb@gmail.com yes
2 zeke cosmos zeke@gmail.com yes
3 foo foo abcd@gmail.com no

我了解我需要使用agrep。 令我困惑的是如何告訴R檢查2列（名字和姓氏）並且僅在該行中檢查。

謝謝-新手

Answer 1

從這里開始

library(stringdist) # install.packages("stringdist") b4, if you need to
df <- read.table(header = TRUE, text = "id firstname lastname emailaddress match
1 patrick boyles patrickb@gmail.com yes
2 zeke cosmos zeke@gmail.com yes
3 foo foo abcd@gmail.com no")
df$match2 <- ifelse(with(df, stringdist(a = paste0(firstname, lastname), 
                                        b = sub("(.*)@.*", "\\1", emailaddress), 
                                        method = "lcs")) <= 7, 
                    "yes", "no")
df
#   id firstname lastname      email.address match match2
# 1  1   patrick   boyles patrickb@gmail.com   yes    yes
# 2  2      zeke   cosmos     zeke@gmail.com   yes    yes
# 3  3       foo      foo     abcd@gmail.com    no     no