Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pose-adaptive Hierarchical Attention Network for Facial Expression
  Recognition   Multi-view facial expression recognition (FER) is a challenging task because
the appearance of an expression varies in poses. To alleviate the influences of
poses, recent methods either perform pose normalization or learn separate FER
classifiers for each pose. However, these methods usually have two stages and
rely on good performance of pose estimators. Different from existing methods,
we propose a pose-adaptive hierarchical attention network (PhaNet) that can
jointly recognize the facial expressions and poses in unconstrained
environment. Specifically, PhaNet discovers the most relevant regions to the
facial expression by an attention mechanism in hierarchical scales, and the
most informative scales are then selected to learn the pose-invariant and
expression-discriminative representations. PhaNet is end-to-end trainable by
minimizing the hierarchical attention losses, the FER loss and pose loss with
dynamically learned loss weights. We validate the effectiveness of the proposed
PhaNet on three multi-view datasets (BU-3DFE, Multi-pie, and KDEF) and two
in-the-wild FER datasets (AffectNet and SFEW). Extensive experiments
demonstrate that our framework outperforms the state-of-the-arts under both
within-dataset and cross-dataset settings, achieving the average accuracies of
84.92\%, 93.53\%, 88.5\%, 54.82\% and 31.25\% respectively.

11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio