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ABSTRACT

Barry B. Boehm suggested an interesting spiral model for the software development process in the International Workshop on the Software Process and Software Environments last Year (Boe86). The model is particularly interesting to me, since it seems to be highly consistent with some of the basic ideas of the PIOCO model for the information systems (IS) design process (Iiv82, Iiv83a, IiKo86) and also with its application to the development of embedded software (IiKT86). For instance, he characterizes the spiral model as a risk-driven approach. In the PIOCO model we have chosen to use the term uncertainty instead of risk emphasiznig that the IS/SW process, particularly in its earlier phases, is information production for the steering committee deciding about the IS/SW product and process (Iiv83a, Iiv86). In Iiv83a and b we have also formalized this idea in terms of Information Economics (Mar74) leading to the conclusion that IS/SW elaboration should be directed to those aspects of the IS/SW process in which the uncertainty, and therefore the potential value of the new information, is greatest (cf. Boe86).

REFERENCES

• 1: Barry W. Boehm, Software Engineering Economics, Prentice Hall PTR, Upper Saddle River, NJ, 1981
• 2: Boe84 Boehm, B.: Verifying and validating software requirements and design spesifications, IEEE Software, January 1984
• 3: B Boehm, A spiral model of software development and enhancement, ACM SIGSOFT Software Engineering Notes, v.11 n.4, p.14-24, August 1986 [doi>10.1145/12944.12948]
• 4: Flo84 Floyd, C.: A systematic look at prototyping, in Budde, R., Kuhlenkamp, K., Mathiassen, L. and Züllighoven, H. (eds.): Approaches to Prototyping, Springer-Verlag, Berlin 1984
• 5: Iiv82 Iivari, J.: Taxonomy of the experimental and evolutionary approaches to systemeering, in Hawgood, J. (ed.): Evolutionary Information Systems, North-Holland, Amsterdam, 1982
• 6: Iiv83a Iivari, J.: Contributions to the theoretical foundations of systemeering research and the PIOCO model, Acta Universitatis Ouluensis, Series A, No. 150, Oulu, 1983
• 7: Iiv83b Iivari, J.: A sociocybernetic metamodel for systemeering as a framework for the contingency research into information systems development, in Bemelmans, Th. M. A. (ed.): Beyond Productivity: information systems development for organizational effectiveness, North-Holland, Amsterdam, 1983
• 8: Juhani Iivari, Dimensions of information systems design: A framework for a long-range research program, Information Systems, v.11 n.2, p.185-197, 1986 [doi>10.1016/0306-4379(86)90007-4]
• 9: IiKo83 Iivari, J. and Koskela, E.: An extended EAR approach for information system specification, in Davis, C. G., Jajodia, S., Ng, P. A., Yeh, R. T. (eds.): Entity-relationship Approach to Software Engineering, North-Holland, Amsterdam, 1983
• 10: IiKo86 Iivari, J. and Koskela, E.: The PIOCO model for IS design, to appear in MIS Quarterly, 1986
• 11: IKIT86 Iivari, J., Koskela, E., Ihme, M., Tervonen, I: Upotetun ohjel-miston käsitemalli, Research paper, Series A5, Institute of Information Processing Science, Oulu 1986
• 12: IiKT86 Iivari, J., Koskela, E., Ihme, M., Tervonen, I.: A hierarchical metamodel for embedded software: the embedding level as a mechanism for requirements analysis, in Barnes, D. and Brown, P. (eds.): Software Engineering'86, Peter Peregrinus Ltd, London, 1986
• 13: IiKT86 Iivari, J., Koskela, E. and Tervonen, I.: A macro model for embedded software development, manuscript, Oulu, 1986
• 14: Mar74 Marschak, J.: Economic Information, Decision and Prediction, selected essays, Volume II, Dordrecht, 1974
• 15: Paul T. Ward , Stephen J. Mellor, Structured Development for Real-Time Systems, Yourdon Press, Upper Saddle River, NJ, 1986

INDEX TERMS

Classification:
  K. Computing Milieux
  K.6 MANAGEMENT OF COMPUTING AND INFORMATION SYSTEMS
      K.6.3 Software Management
          Subjects: Software development

General Terms:
Design, Management