141 research outputs found
Tensor Decomposition Based Attention Module for Spiking Neural Networks
The attention mechanism has been proven to be an effective way to improve
spiking neural network (SNN). However, based on the fact that the current SNN
input data flow is split into tensors to process on GPUs, none of the previous
works consider the properties of tensors to implement an attention module. This
inspires us to rethink current SNN from the perspective of tensor-relevant
theories. Using tensor decomposition, we design the \textit{projected full
attention} (PFA) module, which demonstrates excellent results with linearly
growing parameters. Specifically, PFA is composed by the \textit{linear
projection of spike tensor} (LPST) module and \textit{attention map composing}
(AMC) module. In LPST, we start by compressing the original spike tensor into
three projected tensors using a single property-preserving strategy with
learnable parameters for each dimension. Then, in AMC, we exploit the inverse
procedure of the tensor decomposition process to combine the three tensors into
the attention map using a so-called connecting factor. To validate the
effectiveness of the proposed PFA module, we integrate it into the widely used
VGG and ResNet architectures for classification tasks. Our method achieves
state-of-the-art performance on both static and dynamic benchmark datasets,
surpassing the existing SNN models with Transformer-based and CNN-based
backbones.Comment: 11 page
Identity-Aware Hand Mesh Estimation and Personalization from RGB Images
Reconstructing 3D hand meshes from monocular RGB images has attracted
increasing amount of attention due to its enormous potential applications in
the field of AR/VR. Most state-of-the-art methods attempt to tackle this task
in an anonymous manner. Specifically, the identity of the subject is ignored
even though it is practically available in real applications where the user is
unchanged in a continuous recording session. In this paper, we propose an
identity-aware hand mesh estimation model, which can incorporate the identity
information represented by the intrinsic shape parameters of the subject. We
demonstrate the importance of the identity information by comparing the
proposed identity-aware model to a baseline which treats subject anonymously.
Furthermore, to handle the use case where the test subject is unseen, we
propose a novel personalization pipeline to calibrate the intrinsic shape
parameters using only a few unlabeled RGB images of the subject. Experiments on
two large scale public datasets validate the state-of-the-art performance of
our proposed method.Comment: ECCV 2022. Github
https://github.com/deyingk/PersonalizedHandMeshEstimatio
Controllability of Second-Order Semilinear Impulsive Stochastic Neutral Functional Evolution Equations
We consider a class of impulsive neutral second-order stochastic functional evolution equations. The Sadovskii fixed point theorem and the theory of strongly continuous cosine families of operators are used to investigate the sufficient conditions for the controllability of the system considered. An example is provided to illustrate our results
Production of Gadolinium-loaded Liquid Scintillator for the Daya Bay Reactor Neutrino Experiment
We report on the production and characterization of liquid scintillators for
the detection of electron antineutrinos by the Daya Bay Reactor Neutrino
Experiment. One hundred eighty-five tons of gadolinium-loaded (0.1% by mass)
liquid scintillator (Gd-LS) and two hundred tons of unloaded liquid
scintillator (LS) were successfully produced from a linear-alkylbenzene (LAB)
solvent in six months. The scintillator properties, the production and
purification systems, and the quality assurance and control (QA/QC) procedures
are described.Comment: 15 pages, 11 figures. Submitted to Nuclear Instruments and Methods in
Physics Research Section
Anisotropic, Intermediate Coupling Superconductivity in Cu0.03TaS2
The anisotropic superconducting state properties in Cu0.03TaS2 have been
investigated by magnetization, magnetoresistance, and specific heat
measurements. It clearly shows that Cu0.03TaS2 undergoes a superconducting
transition at TC = 4.03 K. The obtained superconducting parameters demonstrate
that Cu0.03TaS2 is an anisotropic type-II superconductor. Combining specific
heat jump = 1.6(4), gap ratio 2/kBTC = 4.0(9) and the estimated electron-phonon
coupling constant ~ 0.68, the superconductivity in Cu0.03TaS2 is explained
within the intermediate coupling BCS scenario. First-principles electronic
structure calculations suggest that copper intercalation of 2H-TaS2 causes a
considerable increase of the Fermi surface volume and the carrier density,
which suppresses the CDW fluctuation and favors the raise of TC.Comment: 16pages, 5figure
Real-time Monitoring for the Next Core-Collapse Supernova in JUNO
Core-collapse supernova (CCSN) is one of the most energetic astrophysical
events in the Universe. The early and prompt detection of neutrinos before
(pre-SN) and during the SN burst is a unique opportunity to realize the
multi-messenger observation of the CCSN events. In this work, we describe the
monitoring concept and present the sensitivity of the system to the pre-SN and
SN neutrinos at the Jiangmen Underground Neutrino Observatory (JUNO), which is
a 20 kton liquid scintillator detector under construction in South China. The
real-time monitoring system is designed with both the prompt monitors on the
electronic board and online monitors at the data acquisition stage, in order to
ensure both the alert speed and alert coverage of progenitor stars. By assuming
a false alert rate of 1 per year, this monitoring system can be sensitive to
the pre-SN neutrinos up to the distance of about 1.6 (0.9) kpc and SN neutrinos
up to about 370 (360) kpc for a progenitor mass of 30 for the case
of normal (inverted) mass ordering. The pointing ability of the CCSN is
evaluated by using the accumulated event anisotropy of the inverse beta decay
interactions from pre-SN or SN neutrinos, which, along with the early alert,
can play important roles for the followup multi-messenger observations of the
next Galactic or nearby extragalactic CCSN.Comment: 24 pages, 9 figure
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