Hi how to train your code with different pre-trained models

[ssbilakeri]

How to train with different pre-trained models.
please reply.

[huanghoujing]

Hi, to use another backbone.

• First, you create another file, e.g. resnext.py under directory tri_loss/model. The content is the original resnext.py provided by pytorch.
• Then, modify the forward function of resnext, removing unnecessary operation after this line x = self.layer4(x), so that it returns the result of layer4.
• Finally, you can use from .resnext import resnext50 in tri_loss/model/Model.py, and then replace this line

self.base = resnet50(pretrained=True, last_conv_stride=last_conv_stride)

with

self.base = resnext50(pretrained=True)

If you would like to reduce the last convolutional stride of the backbone, you can modify it yourself in resnext.py accordingly.

[ssbilakeri]

Thank you very much for your clear explanation. I want to check with different networks like Efficient net, Inception. Where do I get pretrained weight for these networks. Can you suggest which pretrained network is preferred for reidentification. Thank you.

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On Wed, 3 Mar 2021, 1:34 am Houjing Huang, ***@***.***> wrote: Hi, to use another backbone. - First, you create another file, e.g. resnext.py under directory tri_loss/model. The content is the original resnext.py provided by pytorch. - Then, modify the forward function of resnext, removing unnecessary operation after this line x = self.layer4(x), so that it returns the result of layer4. - Finally, you can use from .resnext import resnext50 in tri_loss/model/Model.py, and then replace this line self.base = resnet50(pretrained=True, last_conv_stride=last_conv_stride) with self.base = resnext50(pretrained=True) If you would like to reduce the last convolutional stride of the backbone, you can modify it yourself in resnext.py accordingly. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#43 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOOYJBPSEOJLQ5H5234LWQLTBVAEZANCNFSM4YOF3KGQ> .

[ssbilakeri]

Can I get anystrong literature to choose best pre-trained model for people reidentification. Kindly suggest Thank you. On Wed, 3 Mar 2021, 6:49 am Shavantrevva Bilakeri, <ssbilakeri@gmail.com> wrote:

…

Thank you very much for your clear explanation. I want to check with different networks like Efficient net, Inception. Where do I get pretrained weight for these networks. Can you suggest which pretrained network is preferred for reidentification. Thank you. On Wed, 3 Mar 2021, 1:34 am Houjing Huang, ***@***.***> wrote: > Hi, to use another backbone. > > - First, you create another file, e.g. resnext.py under directory > tri_loss/model. The content is the original resnext.py provided by > pytorch. > - Then, modify the forward function of resnext, removing unnecessary > operation after this line x = self.layer4(x), so that it returns the > result of layer4. > - Finally, you can use from .resnext import resnext50 in > tri_loss/model/Model.py, and then replace this line > > self.base = resnet50(pretrained=True, last_conv_stride=last_conv_stride) > > with > > self.base = resnext50(pretrained=True) > > If you would like to reduce the last convolutional stride of the > backbone, you can modify it yourself in resnext.py accordingly. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#43 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AOOYJBPSEOJLQ5H5234LWQLTBVAEZANCNFSM4YOF3KGQ> > . >

[huanghoujing]

Sorry for the late response. If you want to try on many different backbones or understand which one is better, as well as some training tricks, you can read the paper FastReID: A Pytorch Toolbox for General Instance Re-identification and the accompanying code https://github.com/JDAI-CV/fast-reid.