57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
|
import pynini
|
||
|
|
from fun_text_processing.text_normalization.en.graph_utils import DAMO_NOT_QUOTE, GraphFst
|
||
|
|
from fun_text_processing.text_normalization.en.verbalizers.ordinal import OrdinalFst
|
||
|
|
from pynini.lib import pynutil
|
||
|
|
|
||
|
|
|
||
|
|
class RomanFst(GraphFst):
|
||
|
|
"""
|
||
|
|
Finite state transducer for verbalizing roman numerals
|
||
|
|
e.g. tokens { roman { integer: "one" } } -> one
|
||
|
|
|
||
|
|
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="roman", kind="verbalize", deterministic=deterministic)
|
||
|
|
suffix = OrdinalFst().suffix
|
||
|
|
|
||
|
|
cardinal = pynini.closure(DAMO_NOT_QUOTE)
|
||
|
|
ordinal = pynini.compose(cardinal, suffix)
|
||
|
|
|
||
|
|
graph = (
|
||
|
|
pynutil.delete('key_cardinal: "')
|
||
|
|
+ pynini.closure(DAMO_NOT_QUOTE, 1)
|
||
|
|
+ pynutil.delete('"')
|
||
|
|
+ pynini.accep(" ")
|
||
|
|
+ pynutil.delete('integer: "')
|
||
|
|
+ cardinal
|
||
|
|
+ pynutil.delete('"')
|
||
|
|
).optimize()
|
||
|
|
|
||
|
|
graph |= (
|
||
|
|
pynutil.delete('default_cardinal: "default" integer: "')
|
||
|
|
+ cardinal
|
||
|
|
+ pynutil.delete('"')
|
||
|
|
).optimize()
|
||
|
|
|
||
|
|
graph |= (
|
||
|
|
pynutil.delete('default_ordinal: "default" integer: "') + ordinal + pynutil.delete('"')
|
||
|
|
).optimize()
|
||
|
|
|
||
|
|
graph |= (
|
||
|
|
pynutil.delete('key_the_ordinal: "')
|
||
|
|
+ pynini.closure(DAMO_NOT_QUOTE, 1)
|
||
|
|
+ pynutil.delete('"')
|
||
|
|
+ pynini.accep(" ")
|
||
|
|
+ pynutil.delete('integer: "')
|
||
|
|
+ pynini.closure(pynutil.insert("the "), 0, 1)
|
||
|
|
+ ordinal
|
||
|
|
+ pynutil.delete('"')
|
||
|
|
).optimize()
|
||
|
|
|
||
|
|
delete_tokens = self.delete_tokens(graph)
|
||
|
|
self.fst = delete_tokens.optimize()
|