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car-detection-bayes
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EMA class updates

This commit is contained in:
Glenn Jocher 2020-03-14 16:23:14 -07:00
parent 666ba85ed3
commit b89cc396af
2 changed files with 12 additions and 9 deletions
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5
train.py
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@ -217,7 +217,6 @@ def train():
if prebias:
ne = 3 # number of prebias epochs
ps = 0.1, 0.9 # prebias settings (lr=0.1, momentum=0.9)
model.gr = 0.0 # giou loss ratio (obj_loss = 1.0)
if epoch == ne:
ps = hyp['lr0'], hyp['momentum'] # normal training settings
model.gr = 1.0 # giou loss ratio (obj_loss = giou)
@ -307,6 +306,7 @@ def train():
scheduler.step()
# Process epoch results
# ema.update_attr(model)
final_epoch = epoch + 1 == epochs
if not opt.notest or final_epoch: # Calculate mAP
is_coco = any([x in data for x in ['coco.data', 'coco2014.data', 'coco2017.data']]) and model.nc == 80
@ -348,8 +348,7 @@ def train():
chkpt = {'epoch': epoch,
'best_fitness': best_fitness,
'training_results': f.read(),
'model': model.module.state_dict() if type(
model) is nn.parallel.DistributedDataParallel else model.state_dict(),
'model': model.module.state_dict() if hasattr(model, 'module') else model.state_dict(),
'optimizer': None if final_epoch else optimizer.state_dict()}
# Save last checkpoint

16
utils/torch_utils.py
View File

@ -141,10 +141,14 @@ class ModelEMA:
msd, esd = model.module.state_dict(), self.ema.module.state_dict()
else:
msd, esd = model.state_dict(), self.ema.state_dict()
# self.ema.load_state_dict({k: esd[k] * d + (1 - d) * v.detach() for k, v in model.items() if v.dtype.is_floating_point})
for k, v in esd.items():
if v.dtype.is_floating_point:
v *= d
v += (1. - d) * msd[k].detach()
# self.ema.load_state_dict(
# {k: esd[k] * d + (1 - d) * v.detach() for k, v in model.items() if v.dtype.is_floating_point})
for k in msd.keys():
if esd[k].dtype.is_floating_point:
esd[k] *= d
esd[k] += (1. - d) * msd[k].detach()
def update_attr(self, model):
# Assign attributes (which may change during training)
for k in model.__dict__.keys():
if not k.startswith('_'):
self.ema.__setattr__(k, model.getattr(k))