Stack-Pointer Networks for Dependency Parsing
Table 4: UAS and LAS on both the development and test datasets of 12 treebanks from UD Treebanks, together with BiAF for comparison.
['[EMPTY]', '[BOLD] Dev BiAF', '[BOLD] Dev BiAF', '[BOLD] Dev StackPtr', '[BOLD] Dev StackPtr', '[BOLD] Test BiAF', '[BOLD] Test BiAF', '[BOLD] Test StackPtr', '[BOLD] Test StackPtr']
First, both BiAF and StackPtr parsers achieve relatively high parsing accuracies on all the 12 languages — all with UAS are higher than 90%. On nine languages — Catalan, Czech, Dutch, English, French, German, Norwegian, Russian and Spanish — StackPtr outperforms BiAF for both UAS and LAS. On Bulgarian, StackPtr achieves slightly better UAS while LAS is slightly worse than BiAF. On Italian and Romanian, BiAF obtains marginally better parsing performance than StackPtr.