47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
|
import pynini
|
||
|
|
from fun_text_processing.text_normalization.en.graph_utils import (
|
||
|
|
DAMO_NOT_QUOTE,
|
||
|
|
GraphFst,
|
||
|
|
delete_space,
|
||
|
|
)
|
||
|
|
from pynini.lib import pynutil
|
||
|
|
|
||
|
|
|
||
|
|
class DecimalFst(GraphFst):
|
||
|
|
"""
|
||
|
|
Finite state transducer for verbalizing decimal, e.g.
|
||
|
|
tokens { decimal { integer_part: "одно целая" fractional_part: "восемь сотых} } ->
|
||
|
|
"одно целая восемь сотых"
|
||
|
|
|
||
|
|
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="decimal", kind="verbalize", deterministic=deterministic)
|
||
|
|
|
||
|
|
optional_sign = pynini.closure(pynini.cross('negative: "true" ', "минус "), 0, 1)
|
||
|
|
integer = pynutil.delete(' "') + pynini.closure(DAMO_NOT_QUOTE, 1) + pynutil.delete('"')
|
||
|
|
integer_part = pynutil.delete("integer_part:") + integer
|
||
|
|
fractional_part = pynutil.delete("fractional_part:") + integer
|
||
|
|
optional_quantity_part = pynini.closure(
|
||
|
|
pynini.accep(" ")
|
||
|
|
+ pynutil.delete('quantity: "')
|
||
|
|
+ pynini.closure(DAMO_NOT_QUOTE, 1)
|
||
|
|
+ pynutil.delete('"'),
|
||
|
|
0,
|
||
|
|
1,
|
||
|
|
)
|
||
|
|
|
||
|
|
self.graph = (
|
||
|
|
optional_sign
|
||
|
|
+ integer_part
|
||
|
|
+ pynini.accep(" ")
|
||
|
|
+ fractional_part
|
||
|
|
+ optional_quantity_part
|
||
|
|
+ delete_space
|
||
|
|
)
|
||
|
|
delete_tokens = self.delete_tokens(self.graph)
|
||
|
|
self.fst = delete_tokens.optimize()
|