ValLoop

class mmengine.runner.ValLoop(runner, dataloader, evaluator, fp16=False)

Loop for validation.

Parameters:

• runner (Runner) – A reference of runner.

• dataloader (Dataloader or dict) – A dataloader object or a dict to build a dataloader.

• evaluator (Evaluator or dict or list) – Used for computing metrics.

• fp16 (bool) – Whether to enable fp16 validation. Defaults to False.

run()

Launch validation.

Return type:

dict

run_iter(idx, data_batch)

Iterate one mini-batch.

Parameters:

data_batch (Sequence[dict]) – Batch of data from dataloader.