Bridging Knowledge Gaps in Neural Entailment via Symbolic Models
Table 2: Ablation: Both Symbolic Lookup and Symbolic Matcher have significant impact on NSnet performance.
['[EMPTY]', '[BOLD] Valid.', '[BOLD] Test']
As we see, removing the symbolic matcher, despite its simplicity, results in a 3.2% drop. Also, the KB lookup model is able to fill some knowledge gaps, contributing 2.1% to the final score. Together, these symbolic matching models contribute 4% to the overall score.