Barry Boehm
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Barry W. Boehm (1935) is an American software engineer, TRW Emeritus Professor of Software Engineering at the Computer Science Department of the University of Southern California, and known for his many contributions to software engineering.
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[edit] Biography
Barry Boehm received his B.A. degree from Harvard University in 1957, and his M.S. in 1961, and Ph.D. degrees from UCLA in 1964, all in mathematics.
Boehm has worked as educator and researcher for many years. From 1955 to 1959 he was a Programmer-Analyst at General Dynamics, and from 1959 to 1973 as Head of the Information Sciences Department at the Rand Corporation. From 1973 to 1989 he worked at TRW Inc. as Chief Scientist of the Defense Systems Group, and from 1989 and 1992 he served within the U.S. Department of Defense (DoD) as Director of the DARPA Information Science and Technology Office, and as Director of the DDR&E Software and Computer Technology Office.[1] Ever since he is TRW Professor of Software Engineering, Computer Science Department, and Director, USC Center for Systems and Software Engineering, formerly Center for Software Engineering.
He has served on the board of several scientific journals, including the IEEE Transactions on Software Engineering, IEEE Computer, IEEE Software, ACM Computing Reviews, Automated Software Engineering, Software Process, and Information and Software Technology.[1]
Recent awards for Barry Boehm include the Office of the Secretary of Defense Award for Excellence in 1992, the ASQC Lifetime Achievement Award in 1994, and the ACM Distinguished Research Award in Software Engineering in 1997. He is an AIAA Fellow, an ACM Fellow, an IEEE Fellow, and a member of the National Academy of Engineering. He received the Mellon Award for Excellence in Mentoring in 2005.[2]
[edit] Work
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Boehm's research interests include software development process modeling, software requirements engineering, software architectures, software metrics and cost models, software engineering environments, and knowledge-based software engineering.
Boehm was the first to identify software as the primary expense of future computer systems. His further contributions to the field include the Constructive Cost Model (COCOMO), the spiral model of the software process, the Theory W (win-win) approach to software management and requirements determination and two advanced software engineering environments: the TRW Software Productivity System and Quantum Leap Environment.[1]
[edit] Software versus hardware costs
In an important 1973 report entitled "Ada - The Project : The DoD High Order Language Working Group" to the Defense Advanced Research Projects Agency (DARPA) [3], Boehm predicted that software costs would overwhelm hardware costs. DARPA had expected him to predict that hardware would remain the biggest problem, encouraging them to invest in even larger computers. The report inspired a change of direction in computing.
[edit] Software economics
Barry Boehm's 1981 book "Software Engineering Economics" documents his Constructive Cost Model (COCOMO). It relates software development effort for a program, in man-years T, to source lines of code (SLOC).
T = k * (SLOC)(1 + x)
For a single software developer, k can be factored out by using more than 1 SLOC data point. In this case, x can be a fraction like 0.1 or 0.25.
- Note: since man-years are not interchangeable with years, Brooks' Law applies:
- Adding programmers to a late project makes it later.
- Thus this formula is best applied to stable software development teams which have completed multiple projects.
[edit] Spiral model
Boehm also created the spiral model of software development, in which the phases of development are repeatedly revisited. This iterative software development process influenced MBASE and extreme programming.
[edit] Wideband Delphi
Boehm refined the Delphi method of estimation to include more group iteration, making it more suitable for certain classes of problems, such as software development. This variant is called the Wideband Delphi method.
[edit] Incremental Commitment Model
The Incremental Commitment Model (ICM) [4] is a system design, developmental, and evolution process for the 21st Century systems. The systems' types cover a wide range from COTS based systems to "routine" Information Systems to human intensive and life or safety critical. [5] It was only in 1998, after the development of the ICM that Barry Boehm along with A Winsor Brown and Supannika Koolmanojwong started to focus on reconciling it with the WinWin Spiral Model and its incarnation in MBASE [6] and the follow-on Lean MBASE [7], and working towards an Incremental Commitment Model for Software (ICMS) by adapting the existing WinWin Sprial Model support tools.[8] In 2008, the evolving ICM for Software with its risk-driven anchor point decisions, proved very useful to several projects which ended up having unusual life cycle phase sequences.[9]
[edit] ICM for Software Systems
[edit] Instructional ICM for Software
[edit] Publications
Barry Boehm has published over 170 articles[10] and several books. Books, a selection:
- 1978. Characteristics of Software Quality. With J.R. Brown, H. Kaspar, M. Lipow, G. McLeod, and M. Merritt, North Holland.
- 1981. Software Engineering Economics. Englewood Cliffs, NJ : Prentice-Hall, 1981 ISBN 0-13-822122-7.
- 1989. Software Risk Management. IEEE Computer Society Press.
- 1996. Ada and Beyond: Software Policies for the Department of Defense. National Academy Press.
- 2007. Software engineering: Barry Boehm's lifetime contributions to software development, management and research. Ed. by Richard Selby. Wiley/IEEE press, 2007. ISBN 047014873X.
Articles:
- 1996. "Anchoring the Software Process",. In: IEEE Software, July 1996.
- 1997. "Developing Multimedia Applications with the WinWin Spiral Model," with A. Egyed, J. Kwan, and R. Madachy. In: Proceedings, ESEC/FSE 97 and ACM Software Engineering Notes, November 1997.
[edit] References
- ^ a b c Barry Boehm TRW Professor of Software Engineering, Computer Science Department Director, USC Center for Software Engineering. Accessdate 2008-10-18.
- ^ Mellon Award for Excellence in Mentoring on Tuesday, April 19, 2005.
- ^ William A. Whitaker (1993). Ada - The Project : The DoD High Order Language Working Group. Accessdate 2008-08-06.
- ^ Brown, A.W., and Meyers, S. 2005. COINCOMO—Combining Elements of the COCOMO Suite, ISPA, June 2005. To be available through http://sunset.usc.edu/cse/pub/publication/techReport.html
- ^ Boehm, B., Brown, A. W., and Koolmanojwong, S. Demonstration Proposal: Incremental Commitment Model for Software. University of Southern California, Los Angeles, CA. 90089.
- ^ Boehm, B., Abts, C., Brown, A. W., Chulani, S., Clark, B. K., Horowitz, K., Madachy, R., Reifer, D., and Steece, B. 2000. Software Cost Estimation with COCOMO II. ISBN 0130266922. Prentice Hall PTR Upper Saddle River, NJ.
- ^ Boehm, B. 2005. Guidelines for Lean Model-Based (System) Architecting and Software Engineering – Version 1.5. University of Southern California, Los Angeles, CA. 90089. http://greenbay.usc.edu/csci577/spring2006/site/guidelines/index.html.
- ^ Boehm, B., Brown, A. W., and Koolmanojwong, S. Demonstration Proposal: Incremental Commitment Model for Software. University of Southern California, Los Angeles, CA. 90089.
- ^ Boehm, B., Brown, A. W., and Koolmanojwong, S. Demonstration Proposal: Incremental Commitment Model for Software. University of Southern California, Los Angeles, CA. 90089.
- ^ Barry Boehm at dblp.mpi-inf.mpg.de. retrieved 18 October 2008.
[edit] External links
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Wikimedia Commons has media related to: Barry W. Boehm |
- Boehm's website
- "A View of 20th and 21st Century Software Engineering" -- talk by Boehm
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