Detecting Clues for Skill Levels and Machine Operation Difficulty from
Egocentric Vision
June 10, 2019
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Computer Science
Human-Computer Interaction
Computer Vision and Pattern Recognition
With respect to machine operation tasks, the experiences from different skill
level operators, especially novices, can provide worthy understanding about the
manner in which they perceive the operational environment and formulate
knowledge ...
To Infinity and Beyond: Continuing De Bruijn Sequences by Extending the
Alphabet
June 10, 2019
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Computer Science
Mathematics
Discrete Mathematics
Combinatorics
This article presents proof that the reverse of the Prefer Max De Bruijn
sequence can be expanded into an infinite De Bruijn sequence by increasing the
size of the alphabet. Furthermore, we show that every De Bruijn sequence
possessing this...
Intelligent Reflecting Surface vs. Decode-and-Forward: How Large
Surfaces Are Needed to Beat Relaying?
June 10, 2019
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Computer Science
Mathematics
Information Theory
Information Theory
The rate and energy efficiency of wireless channels can be improved by
deploying software-controlled metasurfaces to reflect signals from the source
to the destination, especially when the direct path is weak. While previous
works mainly op...
The conjugacy problem for UPG elements of Out(Fn)
June 10, 2019
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Mathematics
Group Theory
An element ϕ of the outer automorphism group \Out(\f) of the rank n
free group Fn is {\it polynomially growing} if the word lengths of conjugacy
classes in \f grow at most polynomially under iteration by ϕ. It is {\it
uni...
Dark matter capture in celestial objects: Improved treatment of multiple
scattering and updated constraints from white dwarfs
June 10, 2019
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Physics
High Energy Physics - Phenomenology
Cosmology and Nongalactic Astrophysics
We revisit dark matter (DM) capture in celestial objects, including the
impact of multiple scattering, and obtain updated constraints on the DM-proton
cross section using observations of white dwarfs. Considering a general form
for the ener...
Accurate Low Rank Approximation at a Low Computational Cost
June 10, 2019
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Mathematics
Computer Science
Numerical Analysis
Numerical Analysis
Given an algorithm A for computing a crude Low Rank Approximation (LRA) of a
matrix having fast decaying spectra of singular values, we greatly decreased
the spectral norm of its output error matrix at sublinear additional
computational cos...
Shintani lifts for Weil representations of unitary groups over finite
fields
June 9, 2019
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Mathematics
Representation Theory
Number Theory
Representation Theory
Number Theory
We construct extended Weil representations of unitary groups over finite
fields geometrically, and show that they are Shintani lifts for Weil
representations....
Community Correlations and Testing Independence Between Binary Graphs
June 9, 2019
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Statistics
Methodology
Applications
Graph data has a unique structure that deviates from standard data
assumptions, often necessitating modifications to existing methods or the
development of new ones to ensure valid statistical analysis. In this paper, we
explore the notion ...
New cohomological invariants of foliations
June 9, 2019
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Mathematics
Differential Geometry
Given a smooth foliation on a closed manifold, basic forms are differential
forms that can be expressed locally in terms of the transverse variables. The
space of basic forms yields a differential complex, because the exterior
derivative fi...
Adaptive Two-stage Stochastic Programming with an Analysis on Capacity
Expansion Planning Problem
June 8, 2019
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Mathematics
Optimization and Control
Multi-stage stochastic programming is a well-established framework for
sequential decision making under uncertainty by seeking policies that are fully
adapted to the uncertainty. Often such flexible policies are not desirable, and
the decis...