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from collections import defaultdict
from typing import Dict, List, Type
from pydantic import BaseModel
from typing_extensions import Literal
from ...models import DOCUMENT_CLASSIFICATION, SEQ2SEQ, SEQUENCE_LABELING
class Format:
name = ''
accept_types = ''
@classmethod
def dict(cls):
return {
'name': cls.name,
'accept_types': cls.accept_types
}
class CSV(Format):
name = 'CSV'
accept_types = 'text/csv'
class FastText(Format):
name = 'fastText'
accept_types = 'text/plain'
class JSON(Format):
name = 'JSON'
accept_types = 'application/json'
class JSONL(Format):
name = 'JSONL'
accept_types = 'application/jsonl'
class Excel(Format):
name = 'Excel'
accept_types = 'application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
class CoNLL(Format):
name = 'CoNLL'
accept_types = 'text/*'
class OptionColumn(BaseModel):
column_data: str = 'text'
column_label: str = 'label'
class OptionDelimiter(OptionColumn):
delimiter: Literal[',', '\t', ';', '|', ' '] = ','
class OptionNone(BaseModel):
pass
class OptionCoNLL(BaseModel):
scheme: Literal['IOB2', 'IOE2', 'IOBES', 'BILOU'] = 'IOB2'
class Options:
options: Dict[str, List] = defaultdict(list)
@classmethod
def filter_by_task(cls, task_name: str):
options = cls.options[task_name]
return [{**format.dict(), **option.schema()} for format, option in options]
@classmethod
def register(cls, task: str, format: Type[Format], option: Type[BaseModel]):
cls.options[task].append((format, option))
# Text Classification
Options.register(DOCUMENT_CLASSIFICATION, CSV, OptionDelimiter)
Options.register(DOCUMENT_CLASSIFICATION, FastText, OptionNone)
Options.register(DOCUMENT_CLASSIFICATION, JSON, OptionColumn)
Options.register(DOCUMENT_CLASSIFICATION, JSONL, OptionColumn)
Options.register(DOCUMENT_CLASSIFICATION, Excel, OptionColumn)
# Sequence Labeling
Options.register(SEQUENCE_LABELING, JSONL, OptionColumn)
Options.register(SEQUENCE_LABELING, CoNLL, OptionNone)
# Sequence to sequence
Options.register(SEQ2SEQ, CSV, OptionDelimiter)
Options.register(SEQ2SEQ, JSON, OptionColumn)
Options.register(SEQ2SEQ, JSONL, OptionColumn)
Options.register(SEQ2SEQ, Excel, OptionColumn)