Reconstruction of Angstrom resolution exit-waves by the application of
drift-corrected phase-shifting off-axis electron holography
March 28, 2023
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Physics
Materials Science
Phase-shifting electron holography is an excellent method to reveal electron
wave phase information with very high phase sensitivity over a large range of
spatial frequencies. It circumvents the limiting trade-off between fringe
spacing and...
CuNeRF: Cube-Based Neural Radiance Field for Zero-Shot Medical Image
Arbitrary-Scale Super Resolution
March 28, 2023
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Electrical Engineering and Systems Science
Computer Science
Image and Video Processing
Computer Vision and Pattern Recognition
Medical image arbitrary-scale super-resolution (MIASSR) has recently gained
widespread attention, aiming to super sample medical volumes at arbitrary
scales via a single model. However, existing MIASSR methods face two major
limitations: (i...
Nonlinear Markov Chains with an Aggregator and their Applications
March 28, 2023
Mathematics
Probability
We study the properties of a subclass of stochastic processes called
discrete-time nonlinear Markov chains with an aggregator. In these chains, the
next period's distribution of the process depends on both the current state of
the process a...
FedAgg: Adaptive Federated Learning with Aggregated Gradients
March 28, 2023
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Computer Science
Machine Learning
Distributed, Parallel, and Cluster Computing
Federated Learning (FL) has emerged as a pivotal paradigm within distributed
model training, facilitating collaboration among multiple devices to refine a
shared model, harnessing their respective datasets as orchestrated by a central
serve...
Complete non-ambiguous trees and associated permutations: new
enumerative results
March 28, 2023
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Mathematics
Combinatorics
We study a link between complete non-ambiguous trees (CNATs) and permutations
exhibited by Daniel Chen and Sebastian Ohlig in recent work. In this, they
associate a certain permutation to the leaves of a CNAT, and show that the
number of $n...
Random Young towers and quenched decay of correlations for predominantly
expanding multimodal circle maps
March 28, 2023
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Mathematics
Dynamical Systems
In this paper, we study the random dynamical system fωn generated by
a family of maps {fω0:S1→S1}ω0∈[−ε,ε], $f_{\omega_0}(x) = \alpha \xi (x+\omega_0) +a\
(\mat...
The Backfill i3+3 Design for Dose-Finding Trials in Oncology
March 28, 2023
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Statistics
Applications
We consider a formal statistical design that allows simultaneous enrollment
of a main cohort and a backfill cohort of patients in a dose-finding trial. The
goal is to accumulate more information at various doses to facilitate dose
optimizat...
On the number of terms in the COS method for European option pricing
March 28, 2023
Quantitative Finance
Computational Finance
The Fourier-cosine expansion (COS) method is used to price European options
numerically in a very efficient way. To apply the COS method, one has to
specify two parameters: a truncation range for the density of the log-returns
and a number ...
Risk ratio, odds ratio, risk difference... Which causal measure is
easier to generalize?
March 28, 2023
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Statistics
Methodology
There are many measures to report so-called treatment or causal effects:
absolute difference, ratio, odds ratio, number needed to treat, and so on. The
choice of a measure, eg absolute versus relative, is often debated because it
leads to d...
Boundary current fluctuations for the half space ASEP and six vertex
model
March 28, 2023
Mathematics
Physics
Probability
Mathematical Physics
Combinatorics
Mathematical Physics
We study fluctuations of the current at the boundary for the half space
asymmetric simple exclusion process (ASEP) and the height function of the half
space six vertex model at the boundary at large times. We establish a phase
transition de...