kubeflow / katib / 29534199986

10%

master: 32%

Pull #2689

github

Honor parameter distribution in Skopt and Goptuna suggestion services

The Skopt and Goptuna suggestion services built their search spaces from
the parameter type only and ignored the declared distribution: Skopt
hardcoded a log-uniform prior for every double parameter, and Goptuna
always built a uniform distribution, so a parameter's distribution was
silently discarded.

Map the distribution to the backend equivalent (uniform and log-uniform)
and raise a clear error for distributions the backend cannot sample
(normal and log-normal, and log-uniform for Goptuna int parameters),
consistent with the Optuna suggestion service.

Signed-off-by: Saivedant Hava <saivedant169@gmail.com>

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