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object --+ | Grammar --+ | WeightedGrammar
A probabilistic context-free grammar. A Weighted Grammar consists of a start state and a set of weighted productions. The set of terminals and nonterminals is implicitly specified by the productions.
PCFG productions should be WeightedProduction
s.
WeightedGrammar
s impose the constraint that the set of
productions with any given left-hand-side must have probabilities that
sum to 1.
If you need efficient key-based access to productions, you can use a subclass to implement it.
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Inherited from Inherited from |
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float
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EPSILON = 0.01 The acceptable margin of error for checking that productions with a given left-hand side have probabilities that sum to 1. |
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Inherited from |
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Create a new context-free grammar, from the given start state and set
of
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