# 索引法與資料庫設計

* 有許多語料索引可能。
  * lucene/ElasticSearch
  * CWB
  * Emdros
* 決定用 CWB，原因還是語言學上的理由。

> "The IMS Open Corpus Workbench (CWB) is a collection of open-source tools for managing and querying large text corpora (ranging from 10 million to 2 billion words) with linguistic annotations. Its central component is the flexible and efficient query processor CQP.