Journal of KIISE (정보과학회 논문지)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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A Framework Integrating Problem Frames and Goal Modeling to Support Variability Analysis during Requirements Elicitation

요구사항 수집 단계에서 가변성 분석을 위한 문제 프레임 및 목표 모델 통합 프레임워크

  • Received : 2016.06.20
  • Accepted : 2016.12.09
  • Published : 2017.03.15
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Abstract

Variability management is the foremost criterion that defines the extent to which complexities can be handled in a system. Predominantly, the requirements' engineering (RE) study overlooks, or speculates a consistent behavior of, the environment in which a system functions. In real-time systems it is vital to observe and adjust to an intrinsically changing context. Therefore, in this work we identify the requirements of the system in various contexts by recommending a framework using i* goal model, problem frames, use case maps and live sequence charts. The framework is illustrated using a case study of the smart grid RTP system. In the case study, elaboration of scenarios using use case maps and live sequence charts proved beneficial as they assisted in early analysis and validation of contexts. In addition, the elaboration of requirements for obstacle and conflict analysis assists the requirements engineer to increase the robustness of the system. The proposed framework is evaluated theoretically and by empirical study.

가변성 관리는 시스템이 어느 정도까지의 복잡성을 처리할 수 있는가를 정의하는 가장 중요한 기준이다. 대부분의 요구 공학 연구에서는 시스템이 동작하는 환경에 대해 많은 부분을 간과하거나 추측하는 수준에 그치고 있다. 그러나 실시간 시스템에서는 본질적으로 변화하는 컨텍스트를 관찰하고 조정하는 것은 중요한 요소이다. 본 연구에서는 i* 목표 모델, 문제 프레임, 유즈 케이스 맵, 라이브 시퀀스 차트를 활용하여 다양한 컨텍스트에 적합한 요구사항을 식별할 수 있는 프레임워크를 제안하며 스마트 그리드의 실시간 가격 정책 변화 시스템을 사례 연구로 활용하여 제안하는 프레임워크를 단계별로 자세하게 설명한다. 사례 연구를 통해 제안방법에서 유즈 케이스 맵과 라이브 시퀀스 차트를 활용한 시나리오 정교화 과정이 초기 컨텍스트 분석 및 검증에 도움을 주는 것을 보여주며 장애물 및 충돌 분석을 위한 요구사항을 정교화함으로써 요구공학 엔지니어들이 시스템의 건장성을 증가시키는 것을 도와줄 수 있음을 증명한다. 이처럼 제안하는 프레임워크는 이론적인 방법과 실증적인 사례를 통해 평가된다.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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