Fig. 2
From: Sentiment and structure in word co-occurrence networks on Twitter
Distribution of words and their contributions to the deviation from neutrality in terms of their word counts and happiness scores. a The 2D histogram for word count vs. happiness score, with the corresponding marginal distributions shown (note that each word has a weight of 1 in the marginal distribution). b A 2D histogram of the contributions of words in word count-happiness space to the deviation from neutrality, \(h_{\Delta , w} = (h_w - 5) * N_w / \sum _{w^{\prime }}{N_{w^{\prime }}}\), where \(h_w\) is the word’s happiness score of word and \(N_w\) is the number of times the word appears in the corpus. The marginal distributions are also included. Vertical lines at \(h=5\) are added to guide the eye