52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
import pynini
|
|
from fun_text_processing.text_normalization.en.graph_utils import (
|
|
DAMO_NOT_QUOTE,
|
|
GraphFst,
|
|
delete_space,
|
|
insert_space,
|
|
)
|
|
from pynini.lib import pynutil
|
|
|
|
|
|
class TimeFst(GraphFst):
|
|
"""
|
|
Finite state transducer for verbalizing electronic
|
|
e.g. time { hours: "два часа пятнадцать минут" } -> "два часа пятнадцать минут"
|
|
|
|
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="time", kind="verbalize", deterministic=deterministic)
|
|
|
|
hour = (
|
|
pynutil.delete("hours:")
|
|
+ delete_space
|
|
+ pynutil.delete('"')
|
|
+ pynini.closure(DAMO_NOT_QUOTE, 1)
|
|
+ pynutil.delete('"')
|
|
)
|
|
minutes = (
|
|
pynutil.delete("minutes:")
|
|
+ delete_space
|
|
+ pynutil.delete('"')
|
|
+ pynini.closure(DAMO_NOT_QUOTE, 1)
|
|
+ pynutil.delete('"')
|
|
)
|
|
|
|
self.graph = (
|
|
hour
|
|
+ delete_space
|
|
+ insert_space
|
|
+ minutes
|
|
+ delete_space
|
|
+ pynutil.delete("preserve_order: true")
|
|
)
|
|
self.graph |= hour + delete_space
|
|
self.graph |= minutes + delete_space + insert_space + hour + delete_space
|
|
|
|
delete_tokens = self.delete_tokens(self.graph)
|
|
self.fst = delete_tokens.optimize()
|