multi-scale training

[foralliance]

from the code, i found that "multi-scale training" means : randomly select a scale from multiple scales. u only need to train once. is that right?? Because in the past, I always thought that "multi-scale training" was to train all the scales, so you had to train many times

[wwwpbai]

@foralliance, Do you know how to achieve multi-scale training now ?