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improved_mrc_model's Introduction

机器阅读理解模型改进

本项目是在毕业设计的机器阅读理解模型上进行改进,结合其他的模型思路以及自己的想法,争取做出改进模型。

数据

数据依旧使用百度的数据集Dureader。

数据内容

百度提供的数据是百度知道与百度搜索中的真实数据,都是由人提问回答,然后选取问题的正确答案进行标注。

数据特点

正是因为是真实数据,由用户产生的,所以QA用语比较随意,通俗。

  • 所有的问题、原文都来源于实际数据(百度搜索引擎数据和百度知道问答社区),答案是由人类回答的。
  • 数据集中包含大量的之前很少研究的是非和观点类的样本。
  • 每个问题都对应多个答案,数据集包含200k问题、1000k原文和420k答案,是目前最大的中文MRC数据集。

question的分析

根据答案类型,DuReader将问题分为:Entity(实体)、Description(描述)和YesNo(是非)

  • 对于实体类问题,其答案一般是单一确定的回答,比如:iPhone是哪天发布?
  • 对于描述类问题,其答案一般较长,是多个句子的总结,典型的how/why类型的问题,比如:消防车为什么是红的?
  • 对于是非类问题,其答案往往较简单,是或者否,比如:39.5度算高烧吗?

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