Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $P^2$ Net: Augmented Parallel-Pyramid Net for Attention Guided Pose
  Estimation   We propose an augmented Parallel-Pyramid Net ($P^2~Net$) with feature
refinement by dilated bottleneck and attention module. During data
preprocessing, we proposed a differentiable auto data augmentation ($DA^2$)
method. We formulate the problem of searching data augmentaion policy in a
differentiable form, so that the optimal policy setting can be easily updated
by back propagation during training. $DA^2$ improves the training efficiency. A
parallel-pyramid structure is followed to compensate the information loss
introduced by the network. We innovate two fusion structures, i.e. Parallel
Fusion and Progressive Fusion, to process pyramid features from backbone
network. Both fusion structures leverage the advantages of spatial information
affluence at high resolution and semantic comprehension at low resolution
effectively. We propose a refinement stage for the pyramid features to further
boost the accuracy of our network. By introducing dilated bottleneck and
attention module, we increase the receptive field for the features with limited
complexity and tune the importance to different feature channels. To further
refine the feature maps after completion of feature extraction stage, an
Attention Module ($AM$) is defined to extract weighted features from different
scale feature maps generated by the parallel-pyramid structure. Compared with
the traditional up-sampling refining, $AM$ can better capture the relationship
between channels. Experiments corroborate the effectiveness of our proposed
method. Notably, our method achieves the best performance on the challenging
MSCOCO and MPII datasets.

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The categories of this paper are: math
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
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The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an