User requirement

User requirement的最终产物是一个User requirement document(用户需求文档)

Classifying and identifying users（用户调查）–模板，用户的各方面信息（如用户类别，直接，非直接）–User class diagram
Direct user：使用，与系统进行交互
Indirect user: 不使用交互系统，可访问，获取信息
Stakeholder profiles：对用户的具体描述（identifying的具体化）
User story(用户的功能需求)：用户说需要什么功能—简短模板（profile的总结）
***As a chemist, I want to…***一句话
Use case(交互操作)：用户（stakeholder）对产品的操作与交互，实现需求
——— use case diagram(使用图)， use case template.
User story：作为用户，想要什么功能
Use case（diagram）基于User story，是功能的总结。描述的是stakeholder与系统的交互操作

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