From d4a7c9e022cce6f0ccb068ffedeb25c79497b6fb Mon Sep 17 00:00:00 2001
From: Wenyu <wenyu.lyu@gmail.com>
Date: Sat, 6 Nov 2021 13:03:02 +0800
Subject: [PATCH] add reference (#4461)

---
 ppdet/modeling/backbones/swin_transformer.py | 5 +++++
 ppdet/modeling/heads/sparsercnn_head.py      | 5 +++++
 ppdet/modeling/initializer.py                | 4 ++++
 ppdet/modeling/losses/sparsercnn_loss.py     | 5 +++++
 4 files changed, 19 insertions(+)

diff --git a/ppdet/modeling/backbones/swin_transformer.py b/ppdet/modeling/backbones/swin_transformer.py
index 73da7958f..027e4f67a 100644
--- a/ppdet/modeling/backbones/swin_transformer.py
+++ b/ppdet/modeling/backbones/swin_transformer.py
@@ -11,6 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""
+This code is based on https://github.com/microsoft/Swin-Transformer/blob/main/models/swin_transformer.py
+Ths copyright of microsoft/Swin-Transformer is as follows:
+MIT License [see LICENSE for details]
+"""
 
 import paddle
 import paddle.nn as nn
diff --git a/ppdet/modeling/heads/sparsercnn_head.py b/ppdet/modeling/heads/sparsercnn_head.py
index 30270b6ec..377cf27fc 100644
--- a/ppdet/modeling/heads/sparsercnn_head.py
+++ b/ppdet/modeling/heads/sparsercnn_head.py
@@ -11,6 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""
+This code is based on https://github.com/PeizeSun/SparseR-CNN/blob/main/projects/SparseRCNN/sparsercnn/head.py
+Ths copyright of PeizeSun/SparseR-CNN is as follows:
+MIT License [see LICENSE for details]
+"""
 
 from __future__ import absolute_import
 from __future__ import division
diff --git a/ppdet/modeling/initializer.py b/ppdet/modeling/initializer.py
index ae0bc4287..b7a135dcc 100644
--- a/ppdet/modeling/initializer.py
+++ b/ppdet/modeling/initializer.py
@@ -11,6 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""
+This code is based on https://github.com/pytorch/pytorch/blob/master/torch/nn/init.py
+Ths copyright of pytorch/pytorch is a BSD-style license, as found in the LICENSE file.
+"""
 
 import math
 import numpy as np
diff --git a/ppdet/modeling/losses/sparsercnn_loss.py b/ppdet/modeling/losses/sparsercnn_loss.py
index d8fc3d117..2d36b21a2 100644
--- a/ppdet/modeling/losses/sparsercnn_loss.py
+++ b/ppdet/modeling/losses/sparsercnn_loss.py
@@ -11,6 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""
+This code is based on https://github.com/PeizeSun/SparseR-CNN/blob/main/projects/SparseRCNN/sparsercnn/loss.py
+Ths copyright of PeizeSun/SparseR-CNN is as follows:
+MIT License [see LICENSE for details]
+"""
 
 from __future__ import absolute_import
 from __future__ import division
-- 
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