Evaluating Scoped Meaning Representations
Table 4: Comparison of three baseline DRS parsers to the gold-standard data set.
['[EMPTY]', '[BOLD] Precision%', '[BOLD] Recall%', '[BOLD] F-score%']
The surprisingly high score of Spar is explained by the fact that the first PMB release mainly contains relatively short sentences with little structural diversity. The average number of clauses per clausal form (excluding redundant REF-clauses) is 8.7, where a substantial share (approximately 3) comes from tense related clauses. Due to this fact, guessing temporal clauses for short sentences has a big impact on F-score.