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Support for quality metrics in metamodelling
Xavier Le Pallec, Lille, France Sophie Dupuy-Chessa, Grenoble, France
Support for quality metrics in metamodelling Xavier Le Pallec, - - PowerPoint PPT Presentation
Support for quality metrics in metamodelling Xavier Le Pallec, - - PowerPoint PPT Presentation
Support for quality metrics in metamodelling Xavier Le Pallec, Lille, France Sophie Dupuy-Chessa, Grenoble, France Agenda How to evaluate visual notation? How to apply Physics of Notations? Our proposition Agenda How to evaluate visual
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Agenda
How to evaluate visual notation?
How to apply Physics of Notations? Our proposition
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Nadia - PhD Student
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Smartphone and interaction devices
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Mobile Multimodal applications
Proximity sensor Gyroscope
- rientation sensor
light sensor
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MDE Chain
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Finding a more efficient visual notation...
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Which one?
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Several scientific works exist
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Existing frameworks
- SEQUAL
- Cognitive Dimensions
- Physics of Notations
- 7 Process Modelling Guidelines
- GoBPM
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Physics of Notations
- 9 principles
- Clear guidelines
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Agenda
How to evaluate visual notation?
How to apply Physics of Notations?
Our proposition
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Applying PoN ... manually ?
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Manually ?
Visual distance from Perceptual discriminability: 2 x 7 tests n=6 105 tests n x (n-1)
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Software!
5/10 8/10
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But there is no tool to evaluate visual notation
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Courageous meta-designers have to do the job
- 9 principles... may be more, or sub-
principles
- Translate them to code
- Still abstract
- Test implementation on material
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Abstract principles
Perceptual discriminability : «Discriminability is primarily determined by the visual distance between symbols. This is measured by the number of visual variables on which they differ and the size of these differences» Moody «In general, the greater the visual distance between symbols, the faster and more accurately they will be recognized» Moody «A l'intérieur d'un code, l'efficacité des signes dépendra moins de leur capacité évocatrice que des distances visuelles que l'on parviendra à obtenir entre les formes pour éviter l'ambiguïté et exclure la confusion.» Bertin
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What do «we» need?
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On Semiotic clarity
Simple principle
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A Meta-Case Tools
- To define metamodels
- To associate one or more visual notations
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A way to code principles/metrics
For each concept of the metamodel if (visualRep(concept).length>1) Symb. Redundancy For each visual_rep of the concrete syntax For each visual_rep2 of the concrete syntax if visuallySimilar(visual_rep, visual_rep2) Symb. Overload visuallySimilar tests if both representations share the same shape, color, brightness, size... (For what kind of differences they are not similar ?)
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A way to display score
8/10 5/10
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A way to quickly test implementation
Short cycle to test the implementation of a principle/metric
For each concept of the metamodel if (visualRep(concept).length>1) NOT GOOD For each visual_rep of the concrete syntax For each visual_rep2 of the concrete syntax if visuallySimilar(visual_rep, visual_rep2) NOT GOOD
10/10 2/10 5/10 7/10 5/10 8/10
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So we need...
- API to access visual entities/features
- Visual box to display results
- Easy/quick way to implement principles/
metrics
visualRep, color, shape... 8/10
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Agenda
How to evaluate visual notation? How to apply Physics of Notations?
Our proposition
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ModX
- Metamodelling tool
- Metrics /
Visual notation: API, visual box, short cycle
- Also for diagrams
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Demo
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