Feature Model
Feature Models are comprehensive visual tools used in the business analysis and product development processes to depict all the features of a solution in a structured, hierarchical format. This hierarchical organization is vital for showcasing how various features are grouped, the relationships between them, and the sub-features within larger, more complex features.
Structure and Levels
The highest level of features is usually referred to as Level 1 (L1) features. These represent the most general functionalities or categories of the solution.
Below L1 are Level 2 (L2) features, which are sub-features that fall under L1 categories.
The hierarchy can continue further into additional levels, although most feature models typically consist of three or fewer levels for simplicity and clarity.
Initiation and Updates
A feature model is generally initiated at the outset of a project, providing a visual depiction of all features that fall within the project's scope.
As the project evolves and more features are identified, particularly through elicitation techniques and analysis, the model is updated.
Adaptive Projects
In adaptive or agile methodologies, feature models can serve as dynamic tools where features can be tagged or labeled for inclusion in specific iterations or sprints.
This iterative approach facilitates release planning and allows for agile adjustments as the project progresses.
Utility and Capacity
One of the key benefits of a feature model is its ability to display a multitude of features (up to 200 or more) across various levels on a single page.
It serves as a consolidated view that allows stakeholders to comprehend the entire feature set of a solution without having to sift through multiple documents or platforms.
Relation to Other Techniques and Tools
Feature Models can be used in combination with other elicitation and analysis techniques like brainstorming.
They are similar to affinity diagrams in helping stakeholders focus on the logical groupings of features or capabilities, facilitating richer discussions about the solution's future state.
Traceability and Requirements
Though the feature model primarily focuses on features, these features are groups of related requirements.
The model helps in the organization and tracing of these underlying requirements to ensure that nothing is overlooked or forgotten during the business analysis process.
Customization
- The models can be customized to include colors, patterns, or other visual cues to indicate scope, urgency, or any other project-specific categorizations.
By providing a high-level view that can be easily digested, feature models serve as powerful tools for stakeholder communication, requirement organization, and strategic decision-making.