Strategy registry

The registry lets applications create an established algorithm from a string. Available names depend on whether the Rust extension imports successfully.

from squeeze import create_reducer, get_strategy, list_strategies

print(list_strategies())
reducer = create_reducer("pca", n_components=2)
assert reducer is not None
assert get_strategy("PCA").name == "pca"

The built-in names are umap and, with the extension, pca, tsne, mds, isomap, lle, phate, trimap, and pacmap. NeighborMap and SpectralMap are not registered by default; instantiate their exported classes directly.

get_strategy(name) returns a Strategy with name, algorithm_class, default_params, description, and category. .create(**kwargs) overrides its defaults. Unknown names raise KeyError.

For a local registry, create StrategyRegistry() and call register(Strategy(name="...", algorithm_class=..., default_params={...})). Names are case-insensitive. names(), categories(), by_category(category), and iteration support discovery. STRATEGIES is the shared default instance; use a separate instance when registrations should remain local to an application.