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Does RE Apply to Open Source Development?. A requirements person\'s view Ian Alexander http://www.scenarioplus.org.uk. Cathedral vs Bazaar. Classical Software Development or Open Source. O\'Reilly, 2001. Cathedral vs Bazaar. Classical SW Development

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does re apply to open source development

Does RE Apply to Open Source Development?

A requirements person\'s view

Ian Alexander

http://www.scenarioplus.org.uk

cathedral vs bazaar
Cathedral vs Bazaar

Classical Software Development

or

Open Source

O\'Reilly, 2001

cathedral vs bazaar1
Cathedral vs Bazaar

Classical SW Development

  • shaped / scarred by "the software crisis"
  • deliberate, thorough, carefully documented
  • "carefully crafted by individual wizards or small bands of mages working in splendid isolation" Eric Raymond
cathedral vs bazaar2
Cathedral vs Bazaar

Open Source

  • shaped / scarred by painful experience of closed software, strict hierarchy, slow response
  • "a great babbling bazaar of differing agendas and approaches" Eric Raymond
re for osd
RE for OSD?
  • How to compare RE processes?
  • Three kinds of Software Development
  • What is Distinctive about OSD?
how to compare re processes
How to compare RE processes?
  • Al Davis:
    • 201 Principles of Software Development !
  • Kotonya & Sommerville:
    • a set of "Requirements Engineering Processes"
  • Beyer & Holtzblatt:
    • Contextual Design (5 major processes)
  • … etc …
  • … etc …
2 three kinds of software development
2. Three kinds of Software Development

A) Large-Scale Custom Development

2 three kinds of software development1
2. Three kinds of Software Development

B) Open Source

* = informal

re for osd1
RE for OSD?
  • Parallels with product line RE
  • Distinctively informal
  • Evolution by natural (market) selection
  • Successes, eg Mozilla
  • Can be commercial (eg Linux)
  • Origins: introspection not elicitation
    • assumes user is like developer
    • less true as usage widens
future of re for osd
Future of RE for OSD
  • Wider market, more commercial
  • More need for discovering requirements
  • Heavily-structured RE "not any time soon"
  • But, will need clear requirements to work from
scenario plus
Scenario Plus
  • Requirements Training
  • Consultancy
  • Workshop Facilitation

www.scenarioplus.org.uk

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