需求抽取 ·抽取技术 ·协同工作(Collaborative sessions) ·面谈 (Interviewing techniques) ·问卷调查(Questionnaires) ·观察法 (Ethnography) ·原型法 (Prototyping) ·文档分析(Documentation) ·建模 (Modeling) ·角色扮演(Roleplaying) ·非功能性需求列表(Checklists of NFRs) ·冲突识别与磋商(Conflict Identification and Negotiation)