Issues and Challenges in Coupling Tropos

with User-Centered Design

Luca Sabatucci, Chiara Leonardi, Angelo Susi, and Massimo Zancanaro

i* Workshop, August 30th, Trento

Slide 2

ACube Critical Context and Actors

Acceptability

Privacy and Value

Low Intrusiveness

Slide 3

Tropos

Strengths Strategic view of the

domain Analysis of

motivations and dependencies

Check of quality and coverage

Support traceability

Lacks and Limits Prioritization of

requirements Needs translation to

involve users Model mainly invariant

elements of the domain

Can’t model physical context

Slide 4

User-Centered Design

Strengths Engagement of

users Concrete

representation of the domain

Stories prioritize requirements

Limits Does not support

traceability Does not support

abstraction Coverage problem

Slide 5

Working Together

Integration bridge the gap

between different research traditions

to work in a situation of methodological pluralism

overhead for practitioners

Assimilation transform a specific

approach to make it fit into another one

to work in a situation of methodological purity

the risk is to loose the strength of one of the approaches

more complex for method designer

6

The Common Meta-Model: a lesson learned

7

Ambiguity:a different perspective

Slide 8

The aim is to find under what conditions our experience can be generalizes: recipe Strengths/limits analysis

Making the divides explicit

Mutual learning

Strengths/limits analysis It relies on the identification of strengths

and limits

This allows to define integration points to create a beneficial dialogue

It allows to preserve their strengths.

Slide 9

Making the divides explicitIdentifying barriers that may hinder the dialogue between the two methods.

Epistemological divides

Linguistic and conceptual divides

Slide 10

Mutual learningMutual learning represent the crucial aspect to mediate between the different epistemologies and languages

Definition of a shared dictionary of terms

Collaborative negotiation of the definition of terms in the dictionary which leads to discover hidden relationships between terms

Iteration with refinement until the agreement

Slide 11

Slide 12

Conclusion