Concept Answer（概念答案）与Keyword Answer（关键字答案）的不同之处在于：Keyword Answer（关键字答案）需要呼叫方说出触发识别的具体语句，而Concept Answer（概念答案）允许用户提供与预定义的Answers（答案）语句之一类似的响应。
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Using your question, a special keyword along with your search term will bring up an Instant Answer.
在你的问题里，搜索词中一个特定关键字将会带来即时答案。
When asking yourself how quickly you need to achieve a quality rank, and the answer is "NOW!" then stop doing keyword research for SEO and start building out lists for a great PPC campaign.
如果你问自己希望多快能够获得一个比较令人满意的排名，而回答是“现在！”那么，让我们停止做SEO的关键字研究转而开始建立一个伟大的PPC活动列表。
This paper mainly focuses on question analysis and answer extraction. Question analysis includes question classification, keyword extraction and keyword expansion.
本文主要研究了问答系统的问题理解与答案抽取两个部分。
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