The `Metric Set Management` component is fundamental because it provides a structured and extensible way to group related metrics into reusable `MetricSet` objects. This aligns with the "Modular Design" and "Component-Based Architecture" patterns, promoting reusability and clear separation of concerns. The `getClassHierarchy` output confirms that `ClassificationMetricSet`, `CoverageMetricSet`, `RankingMetricSet`, and `RatingMetricSet` all inherit from `MetricSet`, demonstrating a well-defined hierarchy and adherence to the Strategy Pattern, where each subclass represents a specific evaluation strategy.

Components

Metric Set Management

This component, primarily located in `rexmex.metricset`, is responsible for defining and managing collections of evaluation metrics. It provides a structured and extensible way to group related metrics into reusable `MetricSet` objects (e.g., `ClassificationMetricSet`, `RankingMetricSet`, `RatingMetricSet`, `CoverageMetricSet`). The base class `rexmex.metricset.MetricSet` establishes a common interface, allowing for the aggregation of individual `Metric Definitions` (from `rexmex.metrics.*`) into coherent evaluation scenarios. This component embodies the Strategy Pattern, where different `MetricSet` implementations represent distinct evaluation strategies.

Metric Implementations (Performance)

This component includes implementations of performance-related evaluation metrics, such as classification, ranking, and rating metrics. These are the concrete metric calculations that are aggregated by the `Metric Set Management` component.

Metric Implementations (Coverage)

This component includes implementations of coverage-related evaluation metrics. Similar to performance metrics, these are the specific calculations used within `MetricSet` objects.

Evaluation Orchestrator (ScoreCard)

This component is responsible for orchestrating the evaluation process, typically using `Metric Sets` to generate scorecards. It acts as a Facade, simplifying the evaluation workflow for users by leveraging the defined metric sets.