如何从R中的文本向量中提取形容词和副词 [英] How to extract adjectives and adverbs from vector of text in R

问题描述

我想从向量中提取形容词和副词，有什么办法吗?

I want to extract adjectives and adverbs from a vector, is there any way to do this ?

input <- "It's a good phone" 

预期输出:"good"

推荐答案

您可以使用 tidytext :

library(tidytext)
library(tidyverse)
unnest_tokens(tibble(txt="It's a good phone"),word, txt) %>%
  left_join(parts_of_speech) %>%
  filter(pos %in% c("Adjective","Adverb")) %>%
  pull(word) %>%
  unique
# [1] "good"

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