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from functools import partial
from datasets import Dataset
def process_docs(dataset, set_answer_type="bool"):
FEATURES = ["title", "abstract", "question", "answer", "answer_type"]
def _categorise_answer(answer_blob):
if answer_blob["unanswerable"]:
answer = "unanswerable"
answer_type = "unanswerable"
return answer, answer_type
elif answer_blob["yes_no"]:
answer = "yes"
answer_type = "bool"
return answer, answer_type
elif answer_blob["free_form_answer"]:
answer = answer_blob["free_form_answer"]
answer_type = "free form answer"
return answer, answer_type
elif answer_blob["extractive_spans"]:
answer = answer_blob["extractive_spans"]
answer_type = "extractive_spans"
return answer, answer_type
elif answer_blob["yes_no"] is False:
answer = "no"
answer_type = "bool"
return answer, answer_type
def _flatten(doc):
"""Given a `doc`, flatten it out so that each JSON blob
contains exactly one question and one answer. Logic taken from
the reference implementation available at
https://github.com/allenai/qasper-led-baseline/blob/main/scripts/evaluator.py
"""
obs_list = {
"title": [],
"abstract": [],
"question": [],
"answer": [],
"answer_type": [],
}
title = doc.pop("title")
abstract = doc.pop("abstract")
for question, answer_list in zip(doc["qas"]["question"], doc["qas"]["answers"]):
for answer_blob in answer_list["answer"]:
answer, answer_type = _categorise_answer(answer_blob)
if answer_type == set_answer_type:
obs_list["title"].append(title)
obs_list["abstract"].append(abstract)
obs_list["question"].append(question)
obs_list["answer_type"].append(answer_type)
if isinstance(answer, list):
answer = ", ".join(answer)
obs_list["answer"].append(answer)
return obs_list
dataset = dataset.map(
_flatten,
remove_columns=[key for key in dataset.features.keys() if key not in FEATURES],
)
new_dataset = {}
for key in dataset.features.keys():
new_dataset[key] = [x for row in dataset[key] for x in row]
return Dataset.from_dict(new_dataset)
process_docs_bool = partial(process_docs, set_answer_type="bool")
process_docs_freeform = partial(process_docs, set_answer_type="free form answer")
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