# Some code here has been modified from:
# https://github.com/togethercomputer/RedPajama-Data/tree/rp_v1/
# --------------------------------------------------------
import regex as re
from ..base_op import OPERATORS, Mapper
[docs]@OPERATORS.register_module('remove_bibliography_mapper')
class RemoveBibliographyMapper(Mapper):
"""Mapper to remove bibliography at the end of documents in Latex
samples."""
_batched_op = True
[docs] def __init__(self, *args, **kwargs):
"""
Initialization method.
:param args: extra args
:param kwargs: extra args
"""
super().__init__(*args, **kwargs)
self.pattern = r'(\\appendix|'
self.pattern += r'\\begin\{references\}|'
self.pattern += r'\\begin\{REFERENCES\}|'
self.pattern += r'\\begin\{thebibliography\}|'
self.pattern += r'\\bibliography\{.*\}'
self.pattern += r').*$'
[docs] def process_batched(self, samples):
samples[self.text_key] = [
re.sub(pattern=self.pattern,
repl=r'',
string=text,
flags=re.DOTALL) for text in samples[self.text_key]
]
return samples