bsnsk / QA

[Broken] A Chinese Question and Answer System

QA

A Chinese Question and Answer System

Stages

• Question Processing

  • Word segmentation
  • Output:
    1. Query formulation
       • Keywords: 中心词，名词，其他词
       • 命名实体
       • 主谓宾
    2. Question Classification
       • Rules / Template matching
       • Parser -> wh-words is ATT to which word => question type
       • Learning

• Passage Retrieval

  • 篇章分词
  • 建立倒排索引
  • Input: Keywords
  • Output: Related Passages
    • 计算篇章的权重
    • 排序，输出前面的篇章

• Answer Extraction

  • Algorithm
    • N-gram?
    • Template matching? Template learning using Search Engines?
  • Output: set of pairs {(answer, passage), ...}

• Answer Ranking

  • Rank (answer, passage) pairs
  • Produce final answer(s)

Remarks

This is only part of the code we wrote.