File size: 1,831 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 |
# Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
# Copyright 2015 and onwards Google, Inc.
#
# 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.verbalizers.verbalize import (
VerbalizeFst,
)
from text_processing.vi.verbalizers.word import WordFst
from text_processing.vi.graph_utils import (
GraphFst,
delete_extra_space,
delete_space,
)
try:
import pynini
from pynini.lib import pynutil
PYNINI_AVAILABLE = True
except (ModuleNotFoundError, ImportError):
PYNINI_AVAILABLE = False
class VerbalizeFinalFst(GraphFst):
"""
Finite state transducer that verbalizes an entire sentence, e.g.
tokens { name: "its" } tokens { time { hours: "12" minutes: "30" } } tokens { name: "now" } -> its 12:30 now
"""
def __init__(self):
super().__init__(name="verbalize_final", kind="verbalize")
verbalize = VerbalizeFst().fst
word = WordFst().fst
types = verbalize | word
graph = (
pynutil.delete("tokens")
+ delete_space
+ pynutil.delete("{")
+ delete_space
+ types
+ delete_space
+ pynutil.delete("}")
)
graph = delete_space + pynini.closure(graph + delete_extra_space) + graph + delete_space
self.fst = graph
|