tidytext 0.1.6

  • unnest_tokens can now unnest a data frame with a list column (which formerly threw the error unnest_tokens expects all columns of input to be atomic vectors (not lists)). The unnested result repeats the objects within each list. (It’s still not possible when collapse = TRUE, in which tokens can span multiple lines).
  • Add get_tidy_stopwords() to obtain stopword lexicons in multiple languages in a tidy format.
  • Add a dataset nma_words of negators, modals, and adverbs that affect sentiment analysis (#55).
  • Updated various vignettes/docs/tests so package can build on R-oldrel.

tidytext 0.1.5

  • Change how NA values are handled in unnest_tokens so they no longer cause other columns to become NA (#82).
  • Update tidiers and casters to align with quanteda v1.0 (#87).
  • Handle input/output object classes (such as data.table) consistently (#88).

tidytext 0.1.4

  • Fix tidier for quanteda dictionary for correct class (#71).
  • Add a pkgdown site.
  • Convert NSE from underscored function to tidyeval (unnest_tokens, bind_tf_idf, all sparse casters) (#67, #74).
  • Added tidiers for topic models from the stm package (#51).

tidytext 0.1.3

  • get_sentiments now works regardless of whether tidytext has been loaded or not (#50).
  • unnest_tokens now supports data.table objects (#37).
  • Fixed to_lower parameter in unnest_tokens to work properly for all tokenizing options.
  • Updated tidy.corpus, glance.corpus, tests, and vignette for changes to quanteda API
  • Removed the deprecated pair_count function, which is now in the in-development widyr package
  • Added tidiers for LDA models from the mallet package
  • Added the Loughran and McDonald dictionary of sentiment words specific to financial reports
  • unnest_tokens preserves custom attributes of data frames and data.tables

tidytext 0.1.2

  • Updated DESCRIPTION to require purrr >= 0.1.1.
  • Fixed cast_sparse, cast_dtm, and other sparse casters to ignore groups in the input (#19)
  • Changed unnest_tokens so that it no longer uses tidyr’s unnest, but rather a custom version that removes some overhead. In some experiments, this sped up unnest_tokens on large inputs by about 40%. This also moves tidyr from Imports to Suggests for now.
  • unnest_tokens now checks that there are no list columns in the input, and raises an error if present (since those cannot be unnested).
  • Added a format argument to unnest_tokens so that it can process html, xml, latex or man pages using the hunspell package, though only when token = "words".
  • Added a get_sentiments function that takes the name of a lexicon (“nrc”, “bing”, or “sentiment”) and returns just that sentiment data frame (#25)

tidytext 0.1.1

  • Added documentation for n-grams, skip n-grams, and regex
  • Added codecov and appveyor
  • Added tidiers for LDA objects from topicmodels and a vignette on topic modeling
  • Added function to calculate tf-idf of a tidy text dataset and a tf-idf vignette
  • Fixed a bug when tidying by line/sentence/paragraph/regex and there are multiple non-text columns
  • Fixed a bug when unnesting using n-grams and skip n-grams (entire text was not being collapsed)
  • Added ability to pass a (custom tokenizing) function to token. Also added a collapse argument that makes the choice whether to combine lines before tokenizing explicit.
  • Changed tidy.dictionary to return a tbl_df rather than a data.frame
  • Updated cast_sparse to work with dplyr 0.5.0
  • Deprecated the pair_count function, which has been moved to pairwise_count in the widyr package. This will be removed entirely in a future version.

tidytext 0.1.0

  • Initial release for text mining using tidy tools