It worked particularly poorly after changing the bbox_loss to SiouLoss on RTMDet.

[jigongbao]

Prerequisite

• I have searched the existing and past issues but cannot get the expected help.
• I have read the FAQ documentation but cannot get the expected help.
• The bug has not been fixed in the latest version.

🐞 Describe the bug

It worked particularly poorly after changing the bbox_loss to SiouLoss on RTMDet.

Environment

Here is my config:
model = dict(
type='YOLODetector',
data_preprocessor=dict(
type='YOLOv5DetDataPreprocessor',
mean=[103.53, 116.28, 123.675],
std=[57.375, 57.12, 58.395],
bgr_to_rgb=False),
backbone=dict(
type='CSPNeXt',
arch='P5',
expand_ratio=0.5,
deepen_factor=deepen_factor,
widen_factor=widen_factor,
channel_attention=True,
norm_cfg=norm_cfg,
act_cfg=dict(type='SiLU', inplace=True)),
neck=[dict(
type='CSPNeXtPAFPN',
deepen_factor=deepen_factor,
widen_factor=widen_factor,
in_channels=[256, 512, 1024],
out_channels=256,
num_csp_blocks=3,
expand_ratio=0.5,
norm_cfg=norm_cfg,
act_cfg=dict(type='SiLU', inplace=True)),
# dict(type='DyHead', in_channels=128, out_channels=128, num_blocks=1)
],
bbox_head=dict(
type='RTMDetHead',
head_module=dict(
type='RTMDetSepBNHeadModule',
num_classes=num_classes,
in_channels=256,
stacked_convs=2,
feat_channels=256,
norm_cfg=norm_cfg,
widen_factor=widen_factor,
act_cfg=dict(type='SiLU', inplace=True),
share_conv=True,
pred_kernel_size=1,
featmap_strides=strides),
prior_generator=dict(
type='mmdet.MlvlPointGenerator', offset=0, strides=strides),
bbox_coder=dict(type='DistancePointBBoxCoder'),
loss_cls=dict(
type='mmdet.QualityFocalLoss',
use_sigmoid=True,
beta=qfl_beta,
loss_weight=loss_cls_weight),
loss_bbox=dict(type='mmdet.SIoULoss', loss_weight=loss_bbox_weight)),
train_cfg=dict(
assigner=dict(
type='BatchDynamicSoftLabelAssigner',
num_classes=num_classes,
topk=dsl_topk,
iou_calculator=dict(type='mmdet.BboxOverlaps2D')),
allowed_border=-1,
pos_weight=-1,
debug=False),
test_cfg=model_test_cfg,
init_cfg=dict(
type='Pretrained',
prefix='backbone.',
checkpoint=checkpoint,
map_location='cpu')
)

Additional information

No response