Patterns improvement

[pa-shk]

I'd like to suggest 3 small improvements to existing patterns:

1. In homophone_scorer add pattern "Both words have different sounds, but {answer} sounds more {like} {query}". Seems like it might be considered as a right answer, but I'm not absolutely sure
2. In rhyming_scorer add pattern "{query} and {answer} are a rhyme"
3. In rhyming_scorer apply a more strict rule for negative scoring. If the answer is not in predictions and there is no negation in the answer, the answer should be considered wrong with certainty 1. With the current rule, the majority of wrong answers have certainty 0

[vvchernov]

Hello @pa-shk! Could you present accuracy values for corresponding tasks before and after scorer update?

[pa-shk]

Yes, shure, though the improvement isn’t significant.

For the task rhyming_words old and new scores respectively:
0.6,47.8,47.6
0.6,48.9,47.6

For the task homophones old and new scores respectively:
40.0,36.2,59.5
40.0,36.5,59.5