Fig. 2: Proportion of occurrence of each motivational word category in the dataset.
From: Are meat alternatives a moral concern? A comparison of English and Japanese tweets
The figure shows the proportion of each motivational word’s occurrence in the dataset over the years, calculated by dividing the aggregated number of each motivational word (by category) by the total number of all motivational words (A English, B Japanese). The trend of keyword occurrence in tweets normalized to 2011 values, plotted in a log scale (C English, D Japanese). The number of tweets containing each keyword per year is normalized to the 2011 value, with 2011 as the base year. Motivational words that occurred in no tweets in 2011 are excluded.
