Modelling Heuristics
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The document discusses the learnable skill of modeling within the context of system design, exploring various heuristics and anti-patterns in modeling practices. It references works from notable authors in the field and emphasizes the continuous making of mental models, the importance of distinguishing between different types of models, and the need for collaborative construction in the design process. The author also lists multiple heuristics related to finding elements in language and modeling, indicating a focus on practical applications in systems analysis.
![[ {
"licensePlate": "1-ABC-123",
"brand": "BMW",
"make": "X1",
"color": "Aggregate Blue",
...,
"location": "40.7127837,-74.0059413"
},
...
]](https://image.slidesharecdn.com/modellingheuristics-141120162826-conversion-gate02/85/Modelling-Heuristics-12-320.jpg)
![Verb-based:
f = chain(
breakTextIntoWords() : [String]
groupWordsIntoLines() : [[String]]
joinWordsInBrokenLines() : [String]
joinBrokenLines() : String
)
f("A long paragraph") -> "A longnparagraph"](https://image.slidesharecdn.com/modellingheuristics-141120162826-conversion-gate02/85/Modelling-Heuristics-15-320.jpg)
![Noun-based: 7
f = chain(
words() : [String]
brokenLines() : [[String]]
wordJoinedLines() : [String]
joinedLines() : String
)
f("A long paragraph") -> "A longnparagraph"
7 Michael Feathers, "A Type Driven Approach to Functional Design", InfoQ](https://image.slidesharecdn.com/modellingheuristics-141120162826-conversion-gate02/85/Modelling-Heuristics-16-320.jpg)
Modelling Heuristics
- 2. Mathias Verraes Independent Consultant Value Object Comm.V Student of Systems Meddler of Models Labourer of Legacy verraes.net
- 3. Is modelling a learnable skill?
- 4. The pain of a wrong abstraction
- 5. Upfront Model? 1 1 Scott W. Ambler, "Big Modeling Up Front (BMUF) Anti-Pattern", http://www.agilemodeling.com/ essays/bmuf.htm
- 6. You are always making mental models
- 7. Analysis model 2 vs Domain model 2 Martin Fowler, 1996, "Analysis Patterns: Reusable Object Models"
- 9. Linguistic Relativism Sapir-Whorf Hypothesis 3,4 3 Steven Pinker, 1994, "The Language Instinct" 4 Paul Graham, "Beating the Averages", http://www.paulgraham.com/avg.html
- 10. Heuristic Find the Nouns Anti-pattern?
- 11. Heuristic Descriptive vs Influential Properties
- 12. [ { "licensePlate": "1-ABC-123", "brand": "BMW", "make": "X1", "color": "Aggregate Blue", ..., "location": "40.7127837,-74.0059413" }, ... ]
- 13. Heuristic Static / Dynamic
- 14. Heuristic Find the Verbs Commands
- 15. Verb-based: f = chain( breakTextIntoWords() : [String] groupWordsIntoLines() : [[String]] joinWordsInBrokenLines() : [String] joinBrokenLines() : String ) f("A long paragraph") -> "A longnparagraph"
- 16. Noun-based: 7 f = chain( words() : [String] brokenLines() : [[String]] wordJoinedLines() : [String] joinedLines() : String ) f("A long paragraph") -> "A longnparagraph" 7 Michael Feathers, "A Type Driven Approach to Functional Design", InfoQ
- 17. Heuristic Find the Sentences Find the Idioms
- 18. Heuristic Find the Scenarios
- 19. Given I have a product When I look at the price of a product ... or Given I have a product When I lookup the product in the pricing table ... ?
- 20. Remember, you are always making mental models
- 21. As a customer I want to ... Given there is a product When I look at the price of a product ... As a shop owner I want to ... Given I have a product When I lookup the product in the pricing table ...
- 22. Heuristic Actors and Roles
- 23. Heuristic The Worker and the Beneficiary
- 24. When I look at the price of a product ... When I lookup the product in the pricing table ...
- 25. Heuristic Segregating Reading and Writing
- 26. Heuristic Being Behaving Becoming Three B's 5 5 Gerald M. Weinberg, 1988, "Rethinking Systems Analysis and Design"
- 27. The customer sometimes has an email. Missing concept?
- 28. Heuristic Collaborative Construction6 Execution Tracking aka Planning/Execution/Analysis 6 Cyrille Martraire, "Collaborative Construction by Alberto Brandolini", http:// cyrille.martraire.com/2012/09/collaborative-construction-by-alberto-brandolini/
- 29. Heuristic Domain Events8 8 http://verraes.net/2014/11/domain-events/
- 30. Time ->
- 31. Heuristic Cause & Consequence
- 33. Cause & Consequence Human External system Process Time
- 34. Heuristic Business Rules Reasons for failure
- 51. Heuristic Happy Path / Divergent Path9 9 Mathias Verraes, "Event Storming: on Fake Domains and Happy Paths", http://verraes.net/ 2014/07/event-storming-fake-domains-happy-paths/
- 53. Throw Away the Model
- 54. @mathiasverraes verraes.net Workshops Domain-Driven Design verraes.net/workshops Ghent, Belgium, January 20-22 Newcastle, UK (TBC)