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- from fun_text_processing.text_normalization.zh.graph_utils import GraphFst
- from fun_text_processing.text_normalization.zh.taggers.cardinal import Cardinal
- from pynini.lib import pynutil
- class Fraction(GraphFst):
- '''
- tokens { fraction { denominator: "5" numerator: "1" } } -> 五分之一
- '''
- def __init__(self, deterministic: bool = True, lm: bool = False):
- super().__init__(name="fraction", kind="verbalize", deterministic=deterministic)
- denominator = pynutil.delete("denominator: \"") + Cardinal().graph_cardinal + pynutil.delete("\"")
- numerator = pynutil.delete("numerator: \"") + Cardinal().graph_cardinal + pynutil.delete("\"")
- graph = denominator + pynutil.delete(" ") + pynutil.insert("分之") + numerator
- self.fst = self.delete_tokens(graph).optimize()
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