摘要：Abstract OBJECTIVES: The authors study two approaches to assertion classification. One of these approaches, Extended NegEx (ENegEx), extends the rule-based...

原文链接:http://jamia.bmj.com/content/16/1/109.short

送人玫瑰，手留余香~如您已下载到该资源，可在回帖当中上传与大家共享，欢迎来CDA社区交流学习。（仅供学术交流用。）