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https://github.com/open-mmlab/mmselfsup.git
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56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
# Copyright (c) OpenMMLab. All rights reserved.
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import copy
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import platform
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import pytest
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import torch
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from mmselfsup.data import SelfSupDataSample
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from mmselfsup.models.algorithms.simclr import SimCLR
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backbone = dict(
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type='ResNet',
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depth=18,
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in_channels=3,
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out_indices=[4], # 0: conv-1, x: stage-x
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norm_cfg=dict(type='BN'))
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neck = dict(
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type='NonLinearNeck', # SimCLR non-linear neck
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in_channels=512,
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hid_channels=2,
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out_channels=2,
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num_layers=2,
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with_avg_pool=True)
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head = dict(
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type='ContrastiveHead',
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loss=dict(type='mmcls.CrossEntropyLoss'),
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temperature=0.1)
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@pytest.mark.skipif(platform.system() == 'Windows', reason='Windows mem limit')
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def test_simclr():
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data_preprocessor = {
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'mean': (123.675, 116.28, 103.53),
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'std': (58.395, 57.12, 57.375),
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'bgr_to_rgb': True,
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}
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alg = SimCLR(
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backbone=backbone,
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neck=neck,
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head=head,
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data_preprocessor=copy.deepcopy(data_preprocessor))
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fake_data = [{
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'inputs': [torch.randn((3, 224, 224)),
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torch.randn((3, 224, 224))],
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'data_sample':
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SelfSupDataSample()
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} for _ in range(2)]
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fake_inputs, fake_data_samples = alg.data_preprocessor(fake_data)
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# test extract
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fake_feat = alg(fake_inputs, fake_data_samples, mode='tensor')
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assert fake_feat[0].size() == torch.Size([2, 512, 7, 7])
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