I just found that there are apparently pretrained XResNets (XResNet2) in the github repository and immediately tried to put one to use (need it badly for a work project).
However, this call:
learn = cnn_learner(data, models.xresnet152(pretrained=True), metrics=[error_rate]).mixup()
hits this error:
/usr/local/lib/python3.6/site-packages/fastai/vision/models/xresnet.py in xresnet152(pretrained, **kwargs)
198 model = XResNet(Bottleneck, [3, 8, 36, 3], **kwargs)
–> 199 if pretrained: model.load_state_dict(model_zoo.load_url(model_urls[‘xresnet152’]))
200 return model
NameError: name ‘model_urls’ is not defined
Are these XResNet2 models available for use or do we have to wait for FastAI 2.0? And if available, how do I fix the model_url definition?