23 lines
882 B
Python
23 lines
882 B
Python
import pynini
|
|
from fun_text_processing.text_normalization.en.graph_utils import GraphFst
|
|
from fun_text_processing.text_normalization.ru.alphabet import RU_ALPHA
|
|
from pynini.lib import pynutil
|
|
|
|
|
|
class DateFst(GraphFst):
|
|
"""
|
|
Finite state transducer for verbalizing date, e.g.
|
|
tokens { date { day: "первое мая" } } -> "первое мая"
|
|
|
|
Args:
|
|
deterministic: if True will provide a single transduction option,
|
|
for False multiple transduction are generated (used for audio-based normalization)
|
|
"""
|
|
|
|
def __init__(self, deterministic: bool = True):
|
|
super().__init__(name="date", kind="verbalize", deterministic=deterministic)
|
|
|
|
graph = pynutil.delete('day: "') + pynini.closure(RU_ALPHA | " ", 1) + pynutil.delete('"')
|
|
delete_tokens = self.delete_tokens(graph)
|
|
self.fst = delete_tokens.optimize()
|