Lifecycle models For more info on these models

Lifecycle models For more info on these models – see text 2. Specific References are in notes view 3. Present the model you think is most appropriate for IXD and Web 2. 0 processes 1.

Lifecycle models Show activities are related to each other l Lifecycle models are: l management tools — simplified versions of reality — l Many lifecycle models exist, for example: From software engineering: waterfall, spiral, JAD/RAD, Microsoft — from HCI: Star, usability engineering —

A simple interaction design model Identify needs/ establish requirements (Re)Design Evaluate Build an interactive version Final product Exemplifies a user-centered design approach

From software engineering Traditional ‘waterfall’ lifecycle Requirements analysis Design Code Test Maintenance

From software engineering Spiral model (Barry Boehm) Important features: — Risk analysis — Prototyping — Iterative framework so ideas can be checked and evaluated — Explicitly encourages considering alternatives Good for large and complex projects but not simple ones

From software engineering Spiral model (Barry Boehm) From cctr. umkc. edu/~kennethjuwng/spiral. htm

From software engineering A Lifecycle for RAD (Rapid Applications Development) Project set-up JAD workshops Iterative design and build Engineer and test final prototype Implementation review

From software engineering DSDM lifecycle model

From Human Computer Interaction The Star lifecycle model task/functional analysis Implementation Prototyping Evaluation Conceptual/ formal design Requirements specification

From Human Computer Interaction Usability engineering lifecycle model Reported by Deborah Mayhew l Important features: l l l Holistic view of usability engineering Provides links to software engineering approaches, e. g. OOSE Stages of identifying requirements, designing, evaluating, prototyping Can be scaled down for small projects Uses a style guide to capture a set of usability goals

Your Model for AGILE

Your Model for AGILE & IXD