Tidytext comp
3 important questions on Tidytext comp
What is the tidytext format?
- The tidy format is:
- Each variable is a column
- Each observation is a row
- Each type of observational unit is a table
- buildin from that, the tidytext format is a table that has one token per row, where a token is a meaningful piece of text, which is most often a word but it can also be word groups or punctuation
How is text converted into a tidy format?
- Using unnest_tokens(word, data) creates a new dataframe where every row holds a single word
What are stopwords and how can they be removed from your dataset?
- stop words are words that are not useful for an analysis, typically extremely common words such as “the”, “of”, “to”, and so forth in English.
- We can remove stop words (kept in the tidytext dataset stop_words) with an anti_join().
- if you have another list of stopwords that you'd rather use then provide that list to the antijoin argument instead.
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