Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Video Playback Rate Perception for Self-supervisedSpatio-Temporal
  Representation Learning   In self-supervised spatio-temporal representation learning, the temporal
resolution and long-short term characteristics are not yet fully explored,
which limits representation capabilities of learned models. In this paper, we
propose a novel self-supervised method, referred to as video Playback Rate
Perception (PRP), to learn spatio-temporal representation in a
simple-yet-effective way. PRP roots in a dilated sampling strategy, which
produces self-supervision signals about video playback rates for representation
model learning. PRP is implemented with a feature encoder, a classification
module, and a reconstructing decoder, to achieve spatio-temporal semantic
retention in a collaborative discrimination-generation manner. The
discriminative perception model follows a feature encoder to prefer perceiving
low temporal resolution and long-term representation by classifying
fast-forward rates. The generative perception model acts as a feature decoder
to focus on comprehending high temporal resolution and short-term
representation by introducing a motion-attention mechanism. PRP is applied on
typical video target tasks including action recognition and video retrieval.
Experiments show that PRP outperforms state-of-the-art self-supervised models
with significant margins. Code is available at github.com/yuanyao366/PRP

34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
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The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: math
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con