Abstract optuna.samplers.BruteForceSampler explores a define-by-run search space as a tree: each internal node is a parameter, and a path from the root to a leaf is one trial’s complete params. This package renders that tree as an interactive icicle chart, so you can see which branches have been sampled, how each trial’s parameters relate to one another, and how much of a finite (grid-like) search space is still unexplored.
Leaves are colored by trial state (complete/pruned/failed/running); hovering over a complete trial’s leaf shows its objective value(s).