参考：
使用以下命令在 TFDS 中加载此数据集：
ds = tfds.load('huggingface:cmrc2018')
- 说明：
A Span-Extraction dataset for Chinese machine reading comprehension to add language
diversities in this area. The dataset is composed by near 20,000 real questions annotated
on Wikipedia paragraphs by human experts. We also annotated a challenge set which
contains the questions that need comprehensive understanding and multi-sentence
inference throughout the context.
- 许可：无已知许可
- 版本：0.1.0
- 拆分：
| 拆分 | 样本 |
|---|---|
'test' |
1002 |
'train' |
10142 |
'validation' |
3219 |
- 特征：
{
"id": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"context": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"question": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"answers": {
"feature": {
"text": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"answer_start": {
"dtype": "int32",
"id": null,
"_type": "Value"
}
},
"length": -1,
"id": null,
"_type": "Sequence"
}
}