Slide 49
Slide 49 text
TEXT CLASSIFICATION
T I D Y T E X T
> sparse_words <- tidy_books %>%
+ count(document, word, sort = TRUE) %>%
+ cast_sparse(document, word, n)
>
> books_joined <- data_frame(document = as.integer(rownames(sparse_words))) %>%
+ left_join(books %>%
+ select(document, title))