Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TFPnP: Tuning-free Plug-and-Play Proximal Algorithm with Applications to
  Inverse Imaging Problems   Plug-and-Play (PnP) is a non-convex optimization framework that combines
proximal algorithms, for example, the alternating direction method of
multipliers (ADMM), with advanced denoising priors. Over the past few years,
great empirical success has been obtained by PnP algorithms, especially for the
ones that integrate deep learning-based denoisers. However, a key challenge of
PnP approaches is the need for manual parameter tweaking as it is essential to
obtain high-quality results across the high discrepancy in imaging conditions
and varying scene content. In this work, we present a class of tuning-free PnP
proximal algorithms that can determine parameters such as denoising strength,
termination time, and other optimization-specific parameters automatically. A
core part of our approach is a policy network for automated parameter search
which can be effectively learned via a mixture of model-free and model-based
deep reinforcement learning strategies. We demonstrate, through rigorous
numerical and visual experiments, that the learned policy can customize
parameters to different settings, and is often more efficient and effective
than existing handcrafted criteria. Moreover, we discuss several practical
considerations of PnP denoisers, which together with our learned policy yield
state-of-the-art results. This advanced performance is prevalent on both linear
and nonlinear exemplar inverse imaging problems, and in particular shows
promising results on compressed sensing MRI, sparse-view CT, single-photon
imaging, and phase retrieval.

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The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph