Native Language Identification using Stacked Generalization
Table 7: Results for our ensembles of meta-classifiers applied to Toefl11. Best result per column in bold, best result per row grouping is underlined.
['[EMPTY]', '[BOLD] Method', '[BOLD] Accuracy (%) CV', '[BOLD] Accuracy (%) Test']
As expected, we observe that the tree-based methods receive a substantial performance increase compared to the single decision tree meta-classifier from the previous model. Random forests provide the biggest boost, improving performance by almost 10%. However, this is still lower than our LDA meta-classifier.