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PIC: Permutation Invariant Convolution for Recognizing Long-range Activities
[article]
2020
arXiv
pre-print
Preserved Fulltext
This paper presents PIC, Permutation Invariant Convolution, a novel neural layer to model the temporal structure of long-range activities. It has three desirable properties. i. ...
Neural operations as convolutions, self-attention, and vector aggregation are the go-to choices for recognizing short-range actions. ...
On the micro-level, each segment consists of a few but 1 2 … Figure 1 : PIC, Permutation Invariant Convolution, recognizes long-range activities using multiple levels of abstractions. ...
arXiv:2003.08275v1
fatcat:iywbdhu7drhthl3m6rdxbyvpo4
Technical Report: Temporal Aggregate Representations
[article]
2021
arXiv
pre-print
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In [9], we tackle long-term video understanding, which requires reasoning from current and past or future observations and raises several fundamental questions. ...
Table 2 . 2 Comparisons to methods developed for recognizing
long-range complex activities, Timeception [5] and PIC [6] on
the Breakfast Actions dataset. ...
Placed on top of backbone CNNs, the permutation invariant convolution layer, PIC [6] , also aims at modelling only the temporal dimension. ...
arXiv:2106.03152v2
fatcat:unw4q5yo7rapdmy4ufc66rme24
Deep and concordant subdivisions in the self-fertilizing mangrove killifishes (Kryptolebias) revealed by nuclear and mtDNA markers
2017
Biological Journal of the Linnean Society
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We use extensive geographical sampling and surveys of nuclear microsatellite and mitochondrial DNA loci to investigate the phylogeographic structure of the only recognized self-fertilizing vertebrates, ...
We also thank the Keys Marine Laboratory (Long Key, FL), Blake Ross and Sarah Edwards (Lighthouse Reef, Long Caye, Belize); Phillip Hughes (National Key Deer Refuge, Big Pine Key, FL); and Yvonne Wielhouwer ...
Portions of this work were approved by the following permits to Ryan Earley -FFWCC Special Activity License SAL-09-1132-SR; Florida State Parks Permit 03071220; National Key Deer Refuge Permit 2010-008 ...
doi:10.1093/biolinnean/blx103
fatcat:kscggnz3vvdkvah2cask6t5he4
Content-Based Image Retrieval Using Self-Organizing Maps
[chapter]
1999
Lecture Notes in Computer Science
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In many settings, the existing and widely adopted methods for text-based indexing and information retrieval are inadequate for these new purposes. ...
As a result, the amount of data in visual form is increasing and there is a strong need for effective ways to manage and process it. ...
This can be done assuming the used convolution kernel is separable and shift-invariant. ...
doi:10.1007/3-540-48762-x_67
fatcat:6pqbfjjhibbudlx5fquttmzete
A Survey of Non-Orthogonal Multiple Access for 5G
2018
IEEE Communications Surveys and Tutorials
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Finally, we will highlight a range of challenging open problems that should be solved for NOMA, along with corresponding opportunities and future research trends to address these challenges. ...
As one of the promising techniques of addressing these challenges, non-orthogonal multiple access (NOMA) has been actively investigated in recent years. ...
their convolution with the CIR even in the absence of co-channel interference. ...
doi:10.1109/comst.2018.2835558
fatcat:ycxmkfe3rjet7eikctqijc554m
Privacy Intelligence: A Survey on Image Privacy in Online Social Networks
[article]
2021
arXiv
pre-print
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2020 pre-print arXiv:2008.12199v1 fatcat:htniak3pangmtpixwdgq5n3m34
Image sharing on online social networks (OSNs) has become an indispensable part of daily social activities, but it has also led to an increased risk of privacy invasion. ...
A more intelligent environment for privacy-friendly OSN image sharing is in demand. ...
[73] developed the I-Pic, a software platform for individual policy-compliant content filtering for real-time photography. ...
arXiv:2008.12199v2
fatcat:vxv6rsnyavesjiw2bbnc4jzsiy
Symmetry, Almost
2019
Notices of the American Mathematical Society
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The AMS is not responsible for rate changes or for the quality of the accommodations. Hotels have varying cancellation and early checkout penalties; be sure to ask for details. ...
For the latest information, see www.ams.org/amsmtgs/sectional.html. ...
The latest in a long history of compu-
tations is due to Hart, Harvey, and Ong for
< 2 31 =
2147483648. In this range, attains a maximum value
of 9. ...
doi:10.1090/noti1775
fatcat:xwrijzvqazg7bdym7un5qq2jjq
Late-Onset Offending
2012
International journal of offender therapy and comparative criminology
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Researchers have recognized the benefits of self-report data long ago (see Maxfield, et al., 2000) . ...
For example, marriage has long been believed to be a precursor to desistance from crime and empirical evidence shows that marriage does indeed affect criminality by influencing peer groups, routine activities ...
Taken a vehicle for a ride or drive without the owner's permission? 118 Bought or provided liquor for a minor? ...
doi:10.1177/0306624x12458503
pmid:23014937
fatcat:stynbphpz5giph2dxv7tlbjzq4
Privacy and Security Assessment of Biometric Template Protection
2012
it - Information Technology
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Therefore, it is the fundamental tool for technical innovation and improvement and helps system designers in selecting a suitable template protection algorithm for their applications and needs. ...
Secondly, three threat models are identified as important prerequisites for the assessment. ...
They have been an active research area for more than three decades. ...
doi:10.1524/itit.2012.0676
fatcat:2pypoukudnezxpsr6zyulkodh4
SYMPOSIUM: the structure and biochemistry of mitochondria, held at the 4th annual meeting of the Histochemical Society, on April 6, 1953 at Northwestern University Medical School, Chicago, Illinois
1953
Journal of Histochemistry and Cytochemistry
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
For a long time mitochondria have occupied a position of particular interest among the various cytoplasmic components. ...
Neither was the significance of the insoluble (particulate) nature of this enzyme stressed by these authors nor was the mitochondrion recognized as the bearer of the activity. ...
pmid:13069684
fatcat:s3ri7gw7azhdtor2hxmhdi7ylq
Applications of Deep Learning to the Design of Enhanced Wireless Communication Systems
[article]
2022
arXiv
pre-print
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Conversely, deep learning (DL)-based systems are able to handle increasingly complex tasks for which no tractable models are available. ...
Finally, the combined flexibility and end-to-end performance gains of the third approach motivate its use for short-term practical implementations. ...
An additional advantage is that the RE-MIMO detector is permutation invariant, which means that the ordering of signals received from the users has no impact on the detection performance. ...
arXiv:2205.01210v1
fatcat:tr5ujofosjbkvk6delwwuu3toa
Body Part Regression for CT Images
[article]
2021
arXiv
pre-print
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So far, no easy-to-use method exists to determine the scanned body range of medical Computed Tomography (CT) volumes. ...
In this thesis, a self-supervised body part regression model for CT volumes is developed and trained on a heterogeneous collection of CT studies. ...
One building block consists of a convolutional layer, an activation layer, which is normally the Rectified Linear Unit (ReLU) activation function, and a pooling layer [5, 6] . ...
arXiv:2110.09148v1
fatcat:liaxlqwauvaepdrmdnsa73k4xm
Numerical Fluid Dynamics
1983
SIAM Review
Preserved Fulltext
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In concept, - . - * - -~ -, - - - - -
3-35 Space is divided into rectangular cells in the PIC method, each of which contains a variable number of particles, typically ranging from 4 to 16. ...
Hence, for general initial data, the approximate solution is given by the convolution of the initial data with this distribution. ...
m = ut) is independent of t (it is an invariant).
4." ...
doi:10.1137/1025001
fatcat:cuusudsq25a2pmjj5gf4yfoghi
Numerical fluid dynamics
1988
Mathematics and Computers in Simulation
Preserved Fulltext
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The file type is application/pdf.
In concept, - . - * - -~ -, - - - - -
3-35 Space is divided into rectangular cells in the PIC method, each of which contains a variable number of particles, typically ranging from 4 to 16. ...
Hence, for general initial data, the approximate solution is given by the convolution of the initial data with this distribution. ...
m = ut) is independent of t (it is an invariant).
4." ...
doi:10.1016/0378-4754(88)90144-9
fatcat:m65zkk4dbrc6zg3epxx3wpzhjy
Plasma Physics in Strong Field Regimes
[article]
2018
arXiv
pre-print
Preserved Fulltext
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Moreover, based my new quantum electrodynamics (QED) models for plasmas, it is now possible to understand strong-field QED effects in astrophysical environments and test them in laboratory settings. ...
The explicit expressions depends on these choices, although the general formula for the wave effective action is Lorentz invariant and gauge invariant. ...
On the other hand, the on-shell equations are active, in the sense that they affect the behavior of one another. ...
arXiv:1808.05983v1
fatcat:o6ivkm3wivhy7dknpucshxvnde
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