65 lines
2.9 KiB
Python
65 lines
2.9 KiB
Python
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import pynini
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from fun_text_processing.text_normalization.de.utils import get_abs_path
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from fun_text_processing.text_normalization.en.graph_utils import (
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DAMO_NOT_QUOTE,
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DAMO_SIGMA,
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GraphFst,
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delete_preserve_order,
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insert_space,
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)
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from pynini.lib import pynutil
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class ElectronicFst(GraphFst):
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"""
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Finite state transducer for verbalizing electronic
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e.g. electronic { username: "abc" domain: "hotmail.com" } -> "a b c at hotmail punkt com"
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-> "a b c at h o t m a i l punkt c o m"
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-> "a b c at hotmail punkt c o m"
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-> "a b c at h o t m a i l punkt com"
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Args:
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deterministic: if True will provide a single transduction option,
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for False multiple transduction are generated (used for audio-based normalization)
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"""
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def __init__(self, deterministic: bool = True):
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super().__init__(name="electronic", kind="verbalize", deterministic=deterministic)
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graph_digit_no_zero = pynini.invert(
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pynini.string_file(get_abs_path("data/numbers/digit.tsv"))
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).optimize() | pynini.cross("1", "eins")
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graph_zero = pynini.invert(
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pynini.string_file(get_abs_path("data/numbers/zero.tsv"))
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).optimize()
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graph_digit = graph_digit_no_zero | graph_zero
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graph_symbols = pynini.string_file(get_abs_path("data/electronic/symbols.tsv")).optimize()
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server_common = pynini.string_file(get_abs_path("data/electronic/server_name.tsv"))
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domain_common = pynini.string_file(get_abs_path("data/electronic/domain.tsv"))
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def add_space_after_char():
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return pynini.closure(DAMO_NOT_QUOTE - pynini.accep(" ") + insert_space) + (
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DAMO_NOT_QUOTE - pynini.accep(" ")
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)
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verbalize_characters = pynini.cdrewrite(graph_symbols | graph_digit, "", "", DAMO_SIGMA)
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user_name = pynutil.delete('username: "') + add_space_after_char() + pynutil.delete('"')
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user_name @= verbalize_characters
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convert_defaults = (
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pynutil.add_weight(DAMO_NOT_QUOTE, weight=0.0001) | domain_common | server_common
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)
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domain = convert_defaults + pynini.closure(insert_space + convert_defaults)
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domain @= verbalize_characters
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domain = pynutil.delete('domain: "') + domain + pynutil.delete('"')
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protocol = (
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pynutil.delete('protocol: "')
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+ add_space_after_char() @ pynini.cdrewrite(graph_symbols, "", "", DAMO_SIGMA)
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+ pynutil.delete('"')
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)
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self.graph = (pynini.closure(protocol + pynini.accep(" "), 0, 1) + domain) | (
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user_name + pynini.accep(" ") + pynutil.insert("at ") + domain
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)
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delete_tokens = self.delete_tokens(self.graph + delete_preserve_order)
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self.fst = delete_tokens.optimize()
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