355 citations · 881 across the 16 of their papers we have counts for
5 papers · 1 filter
Information requirements for enterprise systems
Ian Sommerville, Russell Lock, Tim Storer
In this paper, we discuss an approach to system requirements engineering, which is based on using models of the responsibilities assigned to agents in a multi-agency system of syst…
Large-scale Complex IT Systems
Ian Sommerville, Dave Cliff, Radu Calinescu +5
This paper explores the issues around the construction of large-scale complex systems which are built as 'systems of systems' and suggests that there are fundamental reasons, deriv…
Responsibility Modeling for the Sociotechnical Risk Analysis of Coalitions of Systems
David Greenwood, Ian Sommerville
Society is challenging systems engineers by demanding ever more complex and integrated systems. With the rise of cloud computing and systems-of-systems (including cyber-physical sy…
Expectations and Reality: Why an enterprise software system didn't work as planned
David Greenwood, Ian Sommerville
Over two decades, we and other research groups have found that ethnographic and social analyses of work settings can provide insights useful to the process of system analysis and d…
Lessons from the Failure and Subsequent Success of a Complex Healthcare Sector IT Project
David Greenwood, Ali Khajeh-Hosseini, Ian Sommerville
This paper argues that IT failures diagnosed as errors at the technical or project management level are often mistakenly pointing to symptoms of failure rather than a project's und…