Hunting for Troll Comments in News Community Forums
Table 3: Mentioned troll vs. non-troll comments. Ablation excluding feature groups.
['[BOLD] Features', '[BOLD] F', '[BOLD] Acc']
We can see that excluding character n-grams, word suffixes and word prefixes from the features, as well as excluding bag of words with stems or stop words, yields performance gains; the most sizable gain is when excluding char n-grams, which yields one point of improvement. Excluding bad words usage and emoticons also improves the performance but insignificantly, which might be because they are covered by the bag of words features.