File size: 2,440 Bytes
c3b1078 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 |
# Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from text_processing.vi.graph_utils import (
NEMO_NOT_QUOTE,
GraphFst,
delete_space,
)
try:
import pynini
from pynini.lib import pynutil
PYNINI_AVAILABLE = True
except (ModuleNotFoundError, ImportError):
PYNINI_AVAILABLE = False
class DecimalFst(GraphFst):
"""
Finite state transducer for verbalizing decimal, e.g.
decimal { negative: "true" integer_part: "12" fractional_part: "5006" quantity: "tỷ" } -> -12.5006 tỷ
"""
def __init__(self):
super().__init__(name="decimal", kind="verbalize")
optionl_sign = pynini.closure(pynini.cross('negative: "true"', "-") + delete_space, 0, 1)
integer = (
pynutil.delete("integer_part:")
+ delete_space
+ pynutil.delete('"')
+ pynini.closure(NEMO_NOT_QUOTE, 1)
+ pynutil.delete('"')
)
optional_integer = pynini.closure(integer + delete_space, 0, 1)
fractional = (
pynutil.insert(".")
+ pynutil.delete("fractional_part:")
+ delete_space
+ pynutil.delete('"')
+ pynini.closure(NEMO_NOT_QUOTE, 1)
+ pynutil.delete('"')
)
optional_fractional = pynini.closure(fractional + delete_space, 0, 1)
quantity = (
pynutil.delete("quantity:")
+ delete_space
+ pynutil.delete('"')
+ pynini.closure(NEMO_NOT_QUOTE, 1)
+ pynutil.delete('"')
)
optional_quantity = pynini.closure(pynutil.insert(" ") + quantity + delete_space, 0, 1)
graph = optional_integer + optional_fractional + optional_quantity
self.numbers = graph
graph = optionl_sign + graph
delete_tokens = self.delete_tokens(graph)
self.fst = delete_tokens.optimize()
|