Performance of in-country Stance Classifiers at different context levels.

Model performance metrics correspond to the median of 1000 bootstrapped samples of the test set. For each metric, the classifiers whose performance is not statistically different, at a 95% confidence level, from the best-performing model are highlighted in bold. We also highlight in bold the name of the best-performing model if it obtains the best results (or is statistically tied) in all presented metrics. The corresponding confidence bands, computed from the bootstrapped empirical distribution of each metric, are included in Table 1 of S1.