如何用R码找出句子中的连词

Question

如何用R码找出句子中的连词。

例如：

下面提到了一个句子，它是以下内容的输出

sentence <- text[grep("Guarantee of",text)]

请提交13,863.00卢比/-(13,000,863卢比)的履约保证

现在我需要得到"Rs.13,863.00/-"的的连续词“的保证”

-Thanks

Answer 1

sentence <- 'You are requested to submit the Performance Guarantee of Rs.13,863.00/-( Rupees thirteen thousand and eight sixty three)';
sub('.*Guarantee\\s+of\\s+([a-zA-Z0-9,._/-]+).*','\\1',sentence);
## [1] "Rs.13,863.00/-"

Answer 2

试一试

gsub('.*Guarantee of\\s*|\\(.*', '', str1)
[1] "Rs.13,863.00/-"

或

library(stringr)
str_extract(str1, '(?:Rs.)[^(]+')
#[1] "Rs.13,863.00/-"

数据

  str1 <- "You are requested to submit the Performance Guarantee of Rs.13,863.00/-( Rupees thirteen thousand and eight sixty three)"