EARS
A requirements syntax specification method that writes requirements using structured templates, such as "When..., the system shall...", to reduce the ambiguity of natural language and improve the readability and verifiability of requirements.
Core Facts
Timeline (last 90 days)
The basic sentence patterns of the EARS method include the event-driven type (When [trigger], the system shall [response]), which forces the trigger condition and the system response to be separated.
All Facts (3)
The EARS (Easy Approach to Requirements Syntax) specification was originally proposed by Alistair Mavin and others in 2009 during aerospace engineering practice at Rolls-Royce.
65%UnverifiedEARS规范通过五种固定句式模板（泛在型、事件驱动型、状态驱动型、可选型、复杂型）来消除自然语言需求中的歧义性
90%UnverifiedThe basic sentence patterns of the EARS method include the event-driven type (When [trigger], the system shall [response]), which forces the trigger condition and the system response to be separated.
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