Visualizing textual models with in-text and word-as-pixel highlighting
  We explore two techniques which use color to make sense of statistical text models. One method uses in-text annotations to illustrate a model's view of particular tokens in particular documents. Another uses a high-level, "words-as-pixels" graphic to display an entire corpus. Together, these methods offer both zoomed-in and zoomed-out perspectives into a model's understanding of text. We show how these interconnected methods help diagnose a classifier's poor performance on Twitter slang, and make sense of a topic model on historical political texts. 
Abram Handler, Su Lin Blodgett, Brendan O'Connor
stat.ML cs.CL cs.LG