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Test Driven Development: By Example by Kent Beck

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Appendix I. Influence Diagrams

This book contains many examples of influence diagrams. The idea of influence diagrams is taken from Gerald Weinberg's excellent Quality Software Management series, particularly Book 1: Systems Thinking.[1] The purpose of an influence diagram is to see how the elements of a system affect one another.

[1] Weinberg, Gerald. 1992. Systems Thinking. Quality Software Management. New York: Dorset House. ISBN: 0932633226.

Influence diagrams have three elements:

  • Activities, notated as a word or short phrase

  • Positive connections, notated as a directed arrow between two activities; meaning that more of the source activity tends to create more of the destination activity, or less of the source activity tends to create less of ...

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