Protecting Federated Learning from Extreme Model Poisoning Attacks via
Multidimensional Time Series Anomaly Detection
March 29, 2023
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Computer Science
Statistics
Machine Learning
Artificial Intelligence
Cryptography and Security
Machine Learning
Current defense mechanisms against model poisoning attacks in federated
learning (FL) systems have proven effective up to a certain threshold of
malicious clients. In this work, we introduce FLANDERS, a novel pre-aggregation
filter for FL r...
Leveraging joint sparsity in hierarchical Bayesian learning
March 29, 2023
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Statistics
Computer Science
Mathematics
Machine Learning
Machine Learning
Numerical Analysis
Numerical Analysis
We present a hierarchical Bayesian learning approach to infer jointly sparse
parameter vectors from multiple measurement vectors. Our model uses separate
conditionally Gaussian priors for each parameter vector and common
gamma-distributed h...
Automatic Camera Trajectory Control with Enhanced Immersion for Virtual
Cinematography
March 29, 2023
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Computer Science
Multimedia
Graphics
Machine Learning
User-generated cinematic creations are gaining popularity as our daily
entertainment, yet it is a challenge to master cinematography for producing
immersive contents. Many existing automatic methods focus on roughly
controlling predefined s...
Quantum algorithm for collisionless Boltzmann simulation of
self-gravitating systems
March 29, 2023
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Physics
Quantum Physics
Cosmology and Nongalactic Astrophysics
Computational Physics
Plasma Physics
The collisionless Boltzmann equation (CBE) is a fundamental equation that
governs the dynamics of a broad range of astrophysical systems from space
plasma to star clusters and galaxies. It is computationally expensive to
integrate the CBE d...
The Schiffer problem on the cylinder and on the 2-sphere
March 29, 2023
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Mathematics
Analysis of PDEs
Differential Geometry
We prove the existence of a family of compact subdomains Ω of the flat
cylinder
RN×R/2πZ for which the Neumann
eigenvalue problem for the Laplacian on Ω admits eigenfunctions with
consta...
Stability of polydisc slicing
March 29, 2023
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Mathematics
Metric Geometry
Functional Analysis
Probability
We prove a dimension-free stability result for polydisc slicing due to
Oleszkiewicz and Pelczy\'nski (2000). Intriguingly, compared to the real case,
there is an additional asymptotic maximiser. In addition to Fourier-analytic
bounds, we cr...
Phragm\'{e}n-Lindel\"{o}f Principles and Julia Limiting Directions of
Quasiregular Mappings
March 29, 2023
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Mathematics
Dynamical Systems
Complex Variables
We show that the set of Julia limiting directions of a transcendental-type
K-quasiregular mapping f:Rn→Rn must contain a
component of a certain size, depending on the dimension n, the maximal
dilatation K, and...
Fast radio burst energy function in the presence of DMhost
variation
March 29, 2023
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Physics
High Energy Astrophysical Phenomena
Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Fast radio bursts (FRBs) have been found in great numbers, but the physical
mechanism of these sources is still a mystery. The redshift evolutions of the
FRB energy distribution function and the volumetric rate shed light on the
origin of F...
A convergence rate of periodic homogenization for forced mean curvature
flow of graphs in the laminar setting
March 29, 2023
Mathematics
Analysis of PDEs
In this paper, we obtain the rate O(ε1/2) of convergence in
periodic homogenization of forced graphical mean curvature flows in the
laminated setting. We also discuss with an example that a faster rate cannot be
obtained by u...
AraSpot: Arabic Spoken Command Spotting
March 29, 2023
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Computer Science
Computation and Language
Artificial Intelligence
Spoken keyword spotting (KWS) is the task of identifying a keyword in an
audio stream and is widely used in smart devices at the edge in order to
activate voice assistants and perform hands-free tasks. The task is daunting as
there is a nee...