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import pynini
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from fun_text_processing.text_normalization.en.graph_utils import (
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DAMO_DIGIT,
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DAMO_SIGMA,
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DAMO_SPACE,
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GraphFst,
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delete_space,
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insert_space,
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)
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from fun_text_processing.text_normalization.es.graph_utils import (
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cardinal_separator,
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decimal_separator,
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strip_cardinal_apocope,
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)
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from fun_text_processing.text_normalization.es.utils import get_abs_path
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from pynini.lib import pynutil
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quantities = pynini.string_file(get_abs_path("data/numbers/quantities.tsv"))
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digit = pynini.invert(pynini.string_file(get_abs_path("data/numbers/digit.tsv")))
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zero = pynini.invert(pynini.string_file(get_abs_path("data/numbers/zero.tsv")))
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def get_quantity(decimal_graph: 'pynini.FstLike', cardinal_graph: 'pynini.FstLike') -> 'pynini.FstLike':
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"""
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Returns FST that transforms either a cardinal or decimal followed by a quantity into a numeral,
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e.g. 2 millones -> integer_part: "dos" quantity: "millones"
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e.g. 2,4 millones -> integer_part: "dos" fractional_part: "quatro" quantity: "millones"
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e.g. 2,400 millones -> integer_part: "dos mil cuatrocientos" fractional_part: "quatro" quantity: "millones"
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Args:
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decimal_graph: DecimalFST
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cardinal_graph: CardinalFST
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"""
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numbers = pynini.closure(DAMO_DIGIT, 1, 6) @ cardinal_graph
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numbers = pynini.cdrewrite(pynutil.delete(cardinal_separator), "", "", DAMO_SIGMA) @ numbers
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res = (
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pynutil.insert("integer_part: \"")
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+ numbers # The cardinal we're passing only produces 'un' for one, so gender agreement is safe (all quantities are masculine). Limit to 10^6 power.
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+ pynutil.insert("\"")
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+ DAMO_SPACE
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+ pynutil.insert("quantity: \"")
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+ quantities
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+ pynutil.insert("\"")
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)
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res |= decimal_graph + DAMO_SPACE + pynutil.insert("quantity: \"") + quantities + pynutil.insert("\"")
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return res
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class DecimalFst(GraphFst):
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"""
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Finite state transducer for classifying decimal, e.g.
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-11,4006 billones -> decimal { negative: "true" integer_part: "once" fractional_part: "cuatro cero cero seis" quantity: "billones" preserve_order: true }
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1 billón -> decimal { integer_part: "un" quantity: "billón" preserve_order: true }
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Args:
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cardinal: CardinalFst
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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, cardinal: GraphFst, deterministic: bool = True):
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super().__init__(name="decimal", kind="classify", deterministic=deterministic)
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graph_digit = digit | zero
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if not deterministic:
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graph = pynini.union(graph_digit, cardinal.hundreds, cardinal.tens)
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graph += pynini.closure(insert_space + graph)
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else:
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# General pattern seems to be 1-3 digits: map as cardinal, default to digits otherwise \
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graph = pynini.union(
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graph_digit,
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cardinal.tens,
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cardinal.hundreds,
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graph_digit + pynini.closure(insert_space + graph_digit, 3),
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zero
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+ pynini.closure(insert_space + zero)
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+ pynini.closure(insert_space + graph_digit), # For cases such as "1,010"
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)
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# Need to strip apocope everywhere BUT end of string
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reverse_apocope = pynini.string_map([("un", "uno"), ("ún", "uno")])
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apply_reverse_apocope = pynini.cdrewrite(reverse_apocope, "", DAMO_SPACE, DAMO_SIGMA)
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graph @= apply_reverse_apocope
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# Technically decimals should be space delineated groups of three, e.g. (1,333 333). This removes any possible spaces
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strip_formatting = pynini.cdrewrite(delete_space, "", "", DAMO_SIGMA)
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graph = strip_formatting @ graph
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self.graph = graph.optimize()
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graph_separator = pynutil.delete(decimal_separator)
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optional_graph_negative = pynini.closure(pynutil.insert("negative: ") + pynini.cross("-", "\"true\" "), 0, 1)
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self.graph_fractional = pynutil.insert("fractional_part: \"") + self.graph + pynutil.insert("\"")
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# Integer graph maintains apocope except for ones place
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graph_integer = (
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strip_cardinal_apocope(cardinal.graph)
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if deterministic
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else pynini.union(cardinal.graph, strip_cardinal_apocope(cardinal.graph))
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) # Gives us forms w/ and w/o apocope
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self.graph_integer = pynutil.insert("integer_part: \"") + graph_integer + pynutil.insert("\"")
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final_graph_wo_sign = self.graph_integer + graph_separator + insert_space + self.graph_fractional
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self.final_graph_wo_negative = (
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final_graph_wo_sign | get_quantity(final_graph_wo_sign, cardinal.graph).optimize()
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)
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final_graph = optional_graph_negative + self.final_graph_wo_negative
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final_graph += pynutil.insert(" preserve_order: true")
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final_graph = self.add_tokens(final_graph)
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self.fst = final_graph.optimize()
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