Figure 6

Plots (A) and (B) present distributions of comment sentiment and ratings in both datasets for recipes (all categories). As presented, in both datasets the ratings applied to recipes are extremely positive (\(M=4.96\) (Allrecipes.com) vs \(M=4.45\) (Kochbar.de)). Similar trends can be observed for the comment sentiment which is also very on the positive (M=2.02 (Allrecipes.com) vs M=1.87 (Kochbar.de), Scale: \(-4 = \mbox{very negative}\) to \(+4 = \mbox{very positive}\)). Plots (C) and (D) present mean rating and comment sentiment of recipes over time. The lines represent the linear regression of the observations and the lighter colored hulls show the confidence interval of the regression. As presented on average the trends are rather constant and there are neither strong up or downwards trends