Archive stats

This command inspects the MAP-Elites archive statistics for a given island.

Usage

uv run loreley archive stats

It outputs key metrics about the learned behaviour space for the target island:

• island_id
• occupied (behaviour cells with at least one retained member)
• elites (all retained Pareto members)
• cells (total cell capacity)
• coverage
• objective_count
• front_max_size
• primary_metric_name / primary_metric_direction
• best_primary_value (an explicit operational projection, not archive admission)

Options

• --island-id: Inspect a specific island. If omitted, uses the first ID in MAPELITES_ISLANDS.
• --json: Print stats as JSON.