K.O. Conrad and V.A. Schmidt (USA)
Evolvable Systems, Dynamic Software, Dynamic Work, Progressive Software System, User Support Systems
1 Valuable time and money are spent developing software systems. Once a system is fielded, the operational and work requirements frequently require additional software changes over the life of the system, which increases system cost and can cause unexpected delays. This paper defines and surveys the progressive software system (PSS), an instance of what is commonly referred to as an evolvable software system (ESS). We describe the fundamental characteristics of the PSS and conclude with a discussion of PSS advantages, disadvantages, and usage tradeoffs.
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