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Added directclr loss #963

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Atharva-Phatak wants to merge 18 commits into lightly-ai:master from Atharva-Phatak:directclr

Contributor

Atharva-Phatak commented Oct 20, 2022

Addded Implementation of DirectCLR loss as proposed in #781

@philippmwirth I need some help on writing tests. If you could guide me that would be amazing.


          Added directclr loss

e3a19e2

codecov bot commented Oct 20, 2022 •

edited

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Codecov Report

Base: 88.95% // Head: 88.46% // Decreases project coverage by -0.50% ⚠️

Coverage data is based on head (05dab52) compared to base (54cb38a).
Patch coverage: 41.66% of modified lines in pull request are covered.

❗ Current head 05dab52 differs from pull request most recent head 20b71f2. Consider uploading reports for the commit 20b71f2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #963      +/-   ##
==========================================
- Coverage   88.95%   88.46%   -0.50%     
==========================================
  Files         108       96      -12     
  Lines        5023     4567     -456     
==========================================
- Hits         4468     4040     -428     
+ Misses        555      527      -28

Impacted Files	Coverage Δ
lightly/loss/directclr_loss.py	`39.13% <39.13%> (ø)`
lightly/loss/__init__.py	`100.00% <100.00%> (ø)`
lightly/api/version_checking.py	`84.90% <0.00%> (-10.93%)`	⬇️
lightly/api/api_workflow_download_dataset.py	`87.36% <0.00%> (-7.51%)`	⬇️
lightly/models/utils.py	`77.98% <0.00%> (-2.02%)`	⬇️
lightly/data/collate.py	`92.85% <0.00%> (-1.20%)`	⬇️
lightly/api/utils.py	`93.33% <0.00%> (-0.86%)`	⬇️
lightly/models/modules/heads.py	`83.89% <0.00%> (-0.84%)`	⬇️
lightly/loss/swav_loss.py	`93.75% <0.00%> (-0.59%)`	⬇️
lightly/models/modules/masked_autoencoder.py	`92.00% <0.00%> (-0.21%)`	⬇️
... and 32 more

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philippmwirth reviewed

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Contributor

philippmwirth left a comment

Hey @Atharva-Phatak, thank you so much for implementing this! I have left some comments and a few commit suggestions but the overall contribution looks already great.

Regarding the tests, I'd suggest the following steps:

create a new file under tests/loss/test_InfoNCELoss
add a class class TestInfoNCELoss(unittest.TestCase)
add functions of the form test_xyz(self) to verify that the loss is computed correctly (e.g. for a certain input we expect a certain output).

You can take a look at other examples for inspiration.

lightly/loss/directclr_loss.py

+              #Adapted from https://github.com/facebookresearch/directclr/blob/main/directclr/main.py
+              class InfoNCELoss(nn.Module):
+                  """Implementation of InfoNCELoss as required for DIRECTCLR"""

Contributor

philippmwirth Oct 21, 2022

You can leave the reference to DIRECTCLR away here.

lightly/loss/directclr_loss.py Outdated Show resolved Hide resolved

lightly/loss/directclr_loss.py Show resolved Hide resolved

lightly/loss/directclr_loss.py Outdated

+                          dim : Dimension of subvector to be used to compute InfoNCELoss.
+                          temprature: The value used to scale logits.
+                      """
+                      self.temprature = temprature

Contributor

philippmwirth Oct 21, 2022

typo, it's temperature 🙂

Contributor Author

Atharva-Phatak Oct 21, 2022

Sorry :(

lightly/loss/directclr_loss.py Outdated Show resolved Hide resolved

lightly/loss/directclr_loss.py Outdated Show resolved Hide resolved

lightly/loss/directclr_loss.py Outdated

+                      #dimension of subvector sent to infoNCE
+                      self.dim = dim
+                  def normalize(self, x:torch.Tensor) -> torch.Tensor:

Contributor

philippmwirth Oct 21, 2022

I would raise the question if it's necessary to put this in its own function.

Contributor Author

Atharva-Phatak Oct 21, 2022

Well technically not but I would avoid writing torch.nn.functional(x, dim = 1) again and again :)

lightly/loss/directclr_loss.py Outdated Show resolved Hide resolved

Atharva-Phatak and others added 5 commits

October 21, 2022 10:18


          Update lightly/loss/directclr_loss.py

2cdcbf8

Co-authored-by: Philipp Wirth <[email protected]>


          Update lightly/loss/directclr_loss.py

c536318

Co-authored-by: Philipp Wirth <[email protected]>


          Update lightly/loss/directclr_loss.py

Co-authored-by: Philipp Wirth <[email protected]>


          Update lightly/loss/directclr_loss.py

5bf1eba

Co-authored-by: Philipp Wirth <[email protected]>


          Update lightly/loss/directclr_loss.py

05dab52

Co-authored-by: Philipp Wirth <[email protected]>

Contributor Author

Atharva-Phatak commented Oct 21, 2022

I will add tests ASAP :)

Contributor

philippmwirth commented Nov 3, 2022

I will add tests ASAP :)

Hey @Atharva-Phatak do you need more help regarding the tests?

Contributor Author

Atharva-Phatak commented Nov 3, 2022

@philippmwirth I am sorry for the delay, I am currently busy with my mid-semesters. I have my last paper tomorrow, then I would add the tests at the EOD tomorrow.
But if you would like or this PR is delaying things, feel free to add tests :)

Contributor

philippmwirth commented Nov 4, 2022

@philippmwirth I am sorry for the delay, I am currently busy with my mid-semesters. I have my last paper tomorrow, then I would add the tests at the EOD tomorrow. But if you would like or this PR is delaying things, feel free to add tests :)

No, don't worry! Good luck with your mid-semesters 🙂

Atharva-Phatak added 6 commits

November 10, 2022 17:03


          infonce fixes

1dc252d


          text-fixes

1928cbc


          fix resnet structure

35a7bb9


          fix resnet structure

9f2421c


          fix typo

1f97ef5


          fix-spelling

d48afe2

Contributor Author

Atharva-Phatak commented Nov 12, 2022

@philippmwirth Can you help me out here? I am not able to spot the mistake or Have I written the test wrong ?

Contributor

guarin commented Nov 23, 2022

Hi @Atharva-Phatak I believe you have to call super().__init__() in the __init__ function of the loss. Otherwise the nn.Module is not correctly initialized.

The error message indicates that some modules related attributes are missing:

self = <[AttributeError("'InfoNCELoss' object has no attribute '_modules'") raised in repr()] InfoNCELoss object at 0x7f4df2b735b0>
name = '_backward_hooks'

    def __getattr__(self, name: str) -> Union[Tensor, 'Module']:
        if '_parameters' in self.__dict__:
            _parameters = self.__dict__['_parameters']
            if name in _parameters:
                return _parameters[name]
        if '_buffers' in self.__dict__:
            _buffers = self.__dict__['_buffers']
            if name in _buffers:
                return _buffers[name]
        if '_modules' in self.__dict__:
            modules = self.__dict__['_modules']
            if name in modules:
                return modules[name]
>       raise AttributeError("'{}' object has no attribute '{}'".format(
            type(self).__name__, name))
E       AttributeError: 'InfoNCELoss' object has no attribute '_backward_hooks'

You sadly have to scroll quite far back up in the unit tests output to find the actual stacktrace.

Atharva-Phatak added 4 commits

November 25, 2022 10:30


          fix nn.Module error

543cf9b


          test-fix

2dc7804


          fix resnet structure

535a2f5


          fix resnet structure

95d419a

Contributor Author

Atharva-Phatak commented Nov 25, 2022

@guarin Need help fixing this conflict.


          Merge branch 'master' into directclr

2d8b25e

Contributor

guarin commented Nov 28, 2022

Hi @Atharva-Phatak, sorry for the late reply but I fixed the merge conflict. There still seems to be an issue with the loss implementation though.

Contributor Author

Atharva-Phatak commented Nov 28, 2022

Hi @Atharva-Phatak, sorry for the late reply but I fixed the merge conflict. There still seems to be an issue with the loss implementation though.

Let me check the implementation once again.


          Merge branch 'master' into directclr

20b71f2

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