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- Newsgroups: comp.software-eng
- Path: sparky!uunet!cs.utexas.edu!torn!nott!uotcsi2!news
- From: bwatt@csi.uottawa.ca (Bill Watt)
- Subject: Debugging the process
- Message-ID: <1993Jan4.162006.8223@csi.uottawa.ca>
- Sender: news@csi.uottawa.ca
- Nntp-Posting-Host: csia
- Organization: Dept. of Computer Science, University of Ottawa
- Date: Mon, 4 Jan 93 16:20:06 GMT
- Lines: 78
-
- Thanks for the comments on, and corrections to, my initial posting
- on this subject.
-
- "There is no short cut, because there is no end." Korean anon.
-
-
-
- 1. Smaller firms
- "There are approximately 10,000 firms in the [Canadian] software
- industry. ... Ninety percent have less than ten employees and only
- one percent have fifty or more employees." Software - Human
- Resource Issues and Opportunities, Canadian government report,
- March 1992. There must be as many small firms in other countries.
- The future for software engineering is bright. Let's not let
- capability assessment models for large organizations discourage
- the existence of smaller innovative software engineering firms.
- Already, Bell Canada has a capability assessment checklist
- [Trillium draft 2.2] based on the SEI model, but with additional
- requirements. Where is this leading? I did a plan for advancing a
- firm from Bell's definition of level 3 to level 4. The fixed cost
- overhead would discourage the existence of smaller firms.
- "Managing the Software Process" says a capable company must assess
- its subcontractors for conformance to the SEI model (Appendix A -
- A Software Process Maturity Framework "Subcontracting"). On page x
- of "Managing the Software Process" it says "In addition to working
- with very large projects, however, we have found that the same
- methods are effective for smaller groups." I'd like to believe
- this.
-
-
- 2. Precise definition
- I may have a somewhat different perspective. My research in system
- science has been modelling "system development" with a knowledge
- engineering tool. A KE tool forces one to define and relate
- concepts precisely. Based on my KE model of system development,
- the software engineering "process" should be defined as a
- combination of the design and construction "processes" (rather
- than "production of quality software", "Managing the Software
- Process" pg 248). Requirements analysis should be a separate
- "process" from software engineering (a separate knowledge domain
- in my model). The output from analysis would be the *input* to
- software engineering. With a more precise definition it should be
- easier to simplify a capability assessment model for smaller
- firms.
-
- BTW, I managed the development of scientific software without
- having a lot of the problems I've heard about in the industry. Our
- "software process", if I may call it that, wasn't superior. I
- believe the difference was the *input* - formal math specs (often
- reviewed and published) from knowledgeable clients. I write this
- having studied of Dr. Humphrey's discussion on pg 25 that its a
- misconception that "we must begin with firm requirements".
-
-
- 3. Project/process management
- Using a KE tool would force clarification of the distinction
- between process management and project management (chapters 6 and
- 13 of "Managing the Software Process"). PM is an established
- management discipline with its own body of knowledge and proven
- procedures. One of those areas of knowledge, according to the
- Project Management Institute, is the management of quality.
-
-
- 4. The internal process
- The software development process is partly external and partly
- internal (mental). Its up to the participants collectively to
- improve the external process. (Management is just a
- specialization.) Its up to the individual, with the support of the
- others, to improve the internal process. I've had good results
- helping invdividuals improve their internal process by handing
- back assignments to be done over again until they get it right. :-)
-
-
- "Doan' you mind what Denis say", he whispered to me, "Denis, he
- quite a cutup. Sometime he run off at de mouf'."
- Last line of Jas. A. Michener's "Tales of the South Pacific"
-
-
-