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Multiscale partial differential equations (PDEs) arise in various
applications, and several schemes have been developed to solve them
efficiently. Homogenization theory is a powerful methodology that eliminates
the small-scale dependence, resulting in simplified equations that are
computationally tractable while accura... | http://arxiv.org/abs/2306.12006v3 |
The dipole moment in the angular distribution of the cosmic microwave
background (CMB) is thought to originate from the Doppler effect and our motion
relative to the CMB frame. Observations of large-scale structure (LSS) should
show a related ``kinematic dipole'' and help test the kinematic origin of the
CMB dipole. In... | http://arxiv.org/abs/2309.02490v2 |
Kerr parametric oscillators are potential building blocks for fault-tolerant
quantum computers. They can stabilize Kerr-cat qubits, which offer advantages
toward the encoding and manipulation of error-protected quantum information.
The recent realization of Kerr-cat qubits made use of the nonlinearity of the
SNAIL tran... | http://arxiv.org/abs/2310.17698v2 |
The quantum no-broadcasting theorem has an analogue in modal quantum theory
(MQT), a toy model based on finite fields. The failure of broadcasting in MQT
is related to the failure of distributivity of the lattice of subspaces of the
state space. | http://arxiv.org/abs/2304.13561v1 |
We revise the encounter-based approach to imperfect diffusion-controlled
reactions, which employs the statistics of encounters between a diffusing
particle and the reactive region to implement surface reactions. We extend this
approach to deal with a more general setting, in which the reactive region is
surrounded by a... | http://arxiv.org/abs/2301.08947v2 |
The paper deals with periodic homogenization problem for a para\-bo\-lic
equation whose elliptic part is a convolution type operator with rapidly
oscillating coefficients. It is assumed that the coefficients are rapidly
oscillating periodic functions both in spatial and temporal variables and that
the scaling is diffus... | http://arxiv.org/abs/2302.11946v1 |
Understanding seasonal climatic conditions is critical for better management
of resources such as water, energy and agriculture. Recently, there has been a
great interest in utilizing the power of artificial intelligence methods in
climate studies. This paper presents a cutting-edge deep learning model
(UNet++) trained... | http://arxiv.org/abs/2302.10480v1 |
Purpose: The importance of robust proton treatment planning to mitigate the
impact of uncertainty is well understood. However, its computational cost grows
with the number of uncertainty scenarios, prolonging the treatment planning
process. We developed a fast and scalable distributed optimization platform
that paralle... | http://arxiv.org/abs/2304.14568v1 |
Analogical reasoning is a fundamental cognitive ability of humans. However,
current language models (LMs) still struggle to achieve human-like performance
in analogical reasoning tasks due to a lack of resources for model training. In
this work, we address this gap by proposing ANALOGYKB, a million-scale analogy
knowle... | http://arxiv.org/abs/2305.05994v2 |
Generative AI has seen remarkable growth over the past few years, with
diffusion models being state-of-the-art for image generation. This study
investigates the use of diffusion models in generating artificial data
generation for electronic circuits for enhancing the accuracy of subsequent
machine learning models in ta... | http://arxiv.org/abs/2310.10691v1 |
We examine the complexity of the ``Texas Hold'em'' variant of poker from a
topological perspective. We show that there exists a natural simplicial complex
governing the multi-way winning probabilities between various hands, and that
this simplicial complex contains $4$-dimensional spheres as induced
subcomplexes. We de... | http://arxiv.org/abs/2305.02023v3 |
Roman Numeral analysis is the important task of identifying chords and their
functional context in pieces of tonal music. This paper presents a new approach
to automatic Roman Numeral analysis in symbolic music. While existing
techniques rely on an intermediate lossy representation of the score, we
propose a new method... | http://arxiv.org/abs/2307.03544v2 |
In the pursuit of lunar exploration and the investigation of water presence
on the lunar surface, a comprehensive understanding of plasma-surface
interactions is crucial since the regolith's space weathering can create
H$_2$O. However, the Moon is in the Earth's magnetotail for nearly 20\% of its
orbit, which could aff... | http://arxiv.org/abs/2309.15852v1 |
The matching of 3D shapes has been extensively studied for shapes represented
as surface meshes, as well as for shapes represented as point clouds. While
point clouds are a common representation of raw real-world 3D data (e.g. from
laser scanners), meshes encode rich and expressive topological information, but
their cr... | http://arxiv.org/abs/2303.10971v1 |
Our automated reaction discovery program, AutoMeKin, has been utilized to
investigate the formation of glycolonitrile (HOCH$_{2}$CN) in the gas phase
under the low temperatures of the interstellar medium (ISM). The feasibility of
a proposed pathway depends on the absence of barriers above the energy of
reactants and th... | http://arxiv.org/abs/2305.14899v2 |
Discovering causal relationships in complex socio-behavioral systems is
challenging but essential for informed decision-making. We present Upload,
PREprocess, Visualize, and Evaluate (UPREVE), a user-friendly web-based
graphical user interface (GUI) designed to simplify the process of causal
discovery. UPREVE allows us... | http://arxiv.org/abs/2307.13757v1 |
In this study, we analyze data-scarce classification scenarios, where
available labeled legal data is small and imbalanced, potentially hurting the
quality of the results. We focused on two finetuning objectives; SetFit
(Sentence Transformer Finetuning), a contrastive learning setup, and a vanilla
finetuning setup on a... | http://arxiv.org/abs/2307.02882v1 |
We present a study of the structural properties and metallicity distribution
of the nearby peculiar galaxy NGC3077. Using data from our survey of the M81
Group with the Hyper Suprime-Cam on the Subaru Telescope, we construct deep
color-magnitude diagrams that are used to probe the old red giant branch
population of NGC... | http://arxiv.org/abs/2306.04102v1 |
We give a sufficient condition for branched minimal immersions of spheres
into ellipsoids to be embedded: we show that if the coordinate functions of the
branched minimal immersion are first or second eigenfunctions with respect to a
natural metric on the sphere involved in this problem, called critical metric,
then it... | http://arxiv.org/abs/2304.12119v1 |
The principle of DEPENDENCY LENGTH MINIMIZATION, which seeks to keep
syntactically related words close in a sentence, is thought to universally
shape the structure of human languages for effective communication. However,
the extent to which dependency length minimization is applied in human language
systems is not yet ... | http://arxiv.org/abs/2304.11410v1 |
Biomedical datasets are often modeled as knowledge graphs (KGs) because they
capture the multi-relational, heterogeneous, and dynamic natures of biomedical
systems. KG completion (KGC), can, therefore, help researchers make predictions
to inform tasks like drug repositioning. While previous approaches for KGC were
eith... | http://arxiv.org/abs/2307.08411v1 |
This paper concerns itself with the task of taking a large trained neural
network and 'compressing' it to be smaller by deleting parameters or entire
neurons, with minimal decreases in the resulting model accuracy. We compare
various methods of parameter and neuron selection: dropout-based neuron damage
estimation, neu... | http://arxiv.org/abs/2306.10177v1 |
In this paper, we propose a novel multi-modal framework for Scene Text Visual
Question Answering (STVQA), which requires models to read scene text in images
for question answering. Apart from text or visual objects, which could exist
independently, scene text naturally links text and visual modalities together
by conve... | http://arxiv.org/abs/2304.01603v1 |
A collection of identical and independent rare event first passage times is
considered. The problem of finding the fastest out of $N$ such events to occur
is called an extreme first passage time. The rare event times are singular and
limit to infinity as a positive parameter scaling the noise magnitude is
reduced to ze... | http://arxiv.org/abs/2309.01827v2 |
Vision Transformers (ViTs) have demonstrated state-of-the-art performance on
many Computer Vision Tasks. Unfortunately, deploying these large-scale ViTs is
resource-consuming and impossible for many mobile devices. While most in the
community are building for larger and larger ViTs, we ask a completely opposite
questio... | http://arxiv.org/abs/2305.19365v1 |
Temporal concept drift refers to the problem of data changing over time. In
NLP, that would entail that language (e.g. new expressions, meaning shifts) and
factual knowledge (e.g. new concepts, updated facts) evolve over time. Focusing
on the latter, we benchmark $11$ pretrained masked language models (MLMs) on a
serie... | http://arxiv.org/abs/2302.12297v1 |
Recent evidences show that heteroclinic bifurcations in magnetic islands may
be caused by the amplitude variation of resonant magnetic perturbations in
tokamaks. To investigate the onset of these bifurcations, we consider a large
aspect ratio tokamak with an ergodic limiter composed of two pairs of rings
that create ex... | http://arxiv.org/abs/2308.00810v2 |
Imaging beyond the diffraction limit barrier has attracted wide attention due
to the ability to resolve image features that were previously hidden. Of the
various super-resolution microscopy techniques available, a particularly simple
method called saturated excitation microscopy (SAX) requires only a simple
modificati... | http://arxiv.org/abs/2305.17348v1 |
There is a classical connection between the representation theory of the
symmetric group and the general linear group called Schur-Weyl duality.
Variations on this principle yield analogous connections between the symmetric
group and other objects such as the partition algebra and more recently the
multiset partition a... | http://arxiv.org/abs/2307.01353v2 |
Isolated Stellar-Mass BlackHoles (ISMBHs) are potentially discernible through
microlensing observations. In this work, we study detecting and characterizing
ISMBHs with the Roman observations. We simulate a big ensemble of these events
as seen by Roman and estimate the errors in the physical parameters of the lens
obje... | http://arxiv.org/abs/2301.03812v1 |
One of the most interesting problems in the recent renaissance of the studies
in kernel regression might be whether the kernel interpolation can generalize
well, since it may help us understand the `benign overfitting henomenon'
reported in the literature on deep networks. In this paper, under mild
conditions, we show ... | http://arxiv.org/abs/2303.15809v2 |
Digitization increases business opportunities and the risk of companies being
victims of devastating cyberattacks. Therefore, managing risk exposure and
cybersecurity strategies is essential for digitized companies that want to
survive in competitive markets. However, understanding company-specific risks
and quantifyin... | http://arxiv.org/abs/2307.11140v1 |
Federated learning (FL) has enabled training machine learning models
exploiting the data of multiple agents without compromising privacy. However,
FL is known to be vulnerable to data heterogeneity, partial device
participation, and infrequent communication with the server, which are
nonetheless three distinctive chara... | http://arxiv.org/abs/2306.06715v1 |
Despite several solutions and experiments have been conducted recently
addressing image super-resolution (SR), boosted by deep learning (DL)
techniques, they do not usually design evaluations with high scaling factors,
capping it at 2x or 4x. Moreover, the datasets are generally benchmarks which
do not truly encompass ... | http://arxiv.org/abs/2306.09426v1 |
We investigate the structure of the $p$-divisor for the Jouanolou foliation
where we show, under some conditions, that it can be irreducible or has a
$p$-factor. We study the reduction modulo $p$ of foliations on the projective
plane and its applications to the problems of holomorphic foliations. We give
new proof, via... | http://arxiv.org/abs/2305.06251v1 |
Direct optimization of interpolated features on multi-resolution voxel grids
has emerged as a more efficient alternative to MLP-like modules. However, this
approach is constrained by higher memory expenses and limited representation
capabilities. In this paper, we introduce a novel dynamic grid optimization
method for ... | http://arxiv.org/abs/2304.06178v1 |
The security and privacy of refugee communities have emerged as pressing
concerns in the context of increasing global migration. The Rohingya refugees
are a stateless Muslim minority group in Myanmar who were forced to flee their
homes after conflict broke out, with many fleeing to neighbouring countries and
ending up ... | http://arxiv.org/abs/2304.01617v1 |
High-spatio-temporal resolution (HSTR) video recording plays a crucial role
in enhancing various imagery tasks that require fine-detailed information.
State-of-the-art cameras provide this required high frame-rate and high spatial
resolution together, albeit at a high cost. To alleviate this issue, this paper
proposes ... | http://arxiv.org/abs/2310.12092v2 |
We study the eigenvalue spectrum of a large real antisymmetric random matrix
$J_{ij}$. Using a fermionic approach and replica trick, we obtain a
semicircular spectrum of eigenvalues when the mean value of each matrix element
is zero, and in the case of a non-zero mean, we show that there is a set of
critical finite mea... | http://arxiv.org/abs/2309.01833v1 |
Large-scale plasma simulations are critical for designing and developing
next-generation fusion energy devices and modeling industrial plasmas. BIT1 is
a massively parallel Particle-in-Cell code designed for specifically studying
plasma material interaction in fusion devices. Its most salient characteristic
is the incl... | http://arxiv.org/abs/2306.16512v1 |
By means of linear stability analysis (LSA) and direct numerical simulations
of the coupled Gross-Pitaevskii(GP)equations, we address the impurity induced
modulational instability (MI) and the associated nonlinear dynamics in
Bose-Einstein condensates (BECs). We explore the dual role played by the
impurities within the... | http://arxiv.org/abs/2301.03806v2 |
The discovery of the top quark, the most massive elementary particle yet
known, has given us a distinct window into investigating the physics of the
Standard Model and Beyond. With a plethora of top quarks to be produced in the
High Luminosity era of the LHC, the exploration of its rare decays holds great
promise in re... | http://arxiv.org/abs/2307.11154v1 |
Athermal (i.e. zero-temperature) under-constrained systems are typically
floppy, but they can be rigidified by the application of external strain, which
is theoretically well understood. Here and in the companion paper, we extend
this theory to finite temperatures for a very broad class of under-constrained
systems. In... | http://arxiv.org/abs/2304.07266v2 |
Toxic language is difficult to define, as it is not monolithic and has many
variations in perceptions of toxicity. This challenge of detecting toxic
language is increased by the highly contextual and subjectivity of its
interpretation, which can degrade the reliability of datasets and negatively
affect detection model ... | http://arxiv.org/abs/2305.10433v1 |
Applying a family of mass-capacity related inequalities proved in \cite{M22},
we obtain sufficient conditions that imply the nonnegativity as well as
positive lower bounds of the mass, on a class of manifolds with nonnegative
scalar curvature, with or without a singularity. | http://arxiv.org/abs/2307.06428v3 |
We address the problem of identifying the optimal policy with a fixed
confidence level in a multi-armed bandit setup, when \emph{the arms are subject
to linear constraints}. Unlike the standard best-arm identification problem
which is well studied, the optimal policy in this case may not be deterministic
and could mix ... | http://arxiv.org/abs/2306.12774v4 |
Unmanned Aerial Vehicles equipped with cameras can be used to automate image
capture for generating 3D models via photogrammetry. Current methods rely on a
single vehicle to capture images sequentially, or use pre-planned and heuristic
imaging configurations. We seek to provide a multi-agent control approach to
capturi... | http://arxiv.org/abs/2301.08953v1 |
Diffusion models have been remarkably successful in data synthesis. However,
when these models are applied to sensitive datasets, such as banking and human
face data, they might bring up severe privacy concerns. This work
systematically presents the first privacy study about property inference
attacks against diffusion... | http://arxiv.org/abs/2306.05208v2 |
We study numerically the onset of convection in Rotating Rayleigh-B\'enard
convection in horizontally confined geometries of aspect ratio $2$ with the
walls held at fixed temperatures. We show that this arrangement is
unconditionally unstable to flow that takes the form of wall-adjacent
convection rolls. For wall tempe... | http://arxiv.org/abs/2304.03000v1 |
Adding a dopant to an antiferromagnetic spin background disturbs the magnetic
order and leads to the formation of a quasiparticle coined the magnetic
polaron, which plays a central role in understanding strongly correlated
materials. Recently, remarkably detailed insights into the spatial properties
of such polarons ha... | http://arxiv.org/abs/2305.05980v2 |
There are several results in the literature concerning $p$-groups $G$ with a
maximal elementary abelian normal subgroup of rank $k$ due to Thompson, Mann
and others. Following an idea of Sambale we obtain bounds for the number of
generators etc. of a $2$-group $G$ in terms of $k$, which were previously known
only for $... | http://arxiv.org/abs/2305.02037v2 |
This paper describes our submission for the subjectivity detection task at
the CheckThat! Lab. To tackle class imbalances in the task, we have generated
additional training materials with GPT-3 models using prompts of different
styles from a subjectivity checklist based on journalistic perspective. We used
the extended... | http://arxiv.org/abs/2307.03550v1 |
Monolingual word alignment is crucial to model semantic interactions between
sentences. In particular, null alignment, a phenomenon in which words have no
corresponding counterparts, is pervasive and critical in handling semantically
divergent sentences. Identification of null alignment is useful on its own to
reason a... | http://arxiv.org/abs/2306.04116v1 |
This work reports an acoustic filter at 23.5 GHz with a low insertion loss
(IL) of 2.38 dB and a 3-dB fractional bandwidth (FBW) of 18.2%, significantly
surpassing the state-of-the-art. The device leverages electrically coupled
acoustic resonators in 100 nm 128{\deg} Y-cut lithium niobate (LiNbO3)
piezoelectric thin fi... | http://arxiv.org/abs/2307.04559v1 |
Detecting toxicity in online spaces is challenging and an ever more pressing
problem given the increase in social media and gaming consumption. We introduce
ToxBuster, a simple and scalable model trained on a relatively large dataset of
194k lines of game chat from Rainbow Six Siege and For Honor, carefully
annotated f... | http://arxiv.org/abs/2305.12542v1 |
The astounding performance of transformers in natural language processing
(NLP) has motivated researchers to explore their applications in computer
vision tasks. DEtection TRansformer (DETR) introduces transformers to object
detection tasks by reframing detection as a set prediction problem.
Consequently, eliminating t... | http://arxiv.org/abs/2306.04670v3 |
Large language models (LLMs) demonstrate remarkable machine translation (MT)
abilities via prompting, even though they were not explicitly trained for this
task. However, even given the incredible quantities of data they are trained
on, LLMs can struggle to translate inputs with rare words, which are common in
low reso... | http://arxiv.org/abs/2302.07856v1 |
The computation of the distance of two time series is time-consuming for any
elastic distance function that accounts for misalignments. Among those
functions, DTW is the most prominent. However, a recent extensive evaluation
has shown that the move-split merge (MSM) metric is superior to DTW regarding
the analytical ac... | http://arxiv.org/abs/2301.01977v3 |
In this article, we investigate the incompressible 2D Euler equations on a
rotating biaxial ellipsoid, which model the dynamics of the atmosphere of a
Jovian planet. We study the non-zonal Rossby-Haurwitz solutions of the Euler
equations on an ellipsoid, while previous works only considered the case of a
sphere. Our ma... | http://arxiv.org/abs/2310.17854v1 |
In this paper, we address the well-known image quality assessment problem but
in contrast from existing approaches that predict image quality independently
for every images, we propose to jointly model different images depicting the
same content to improve the precision of quality estimation. This proposal is
motivated... | http://arxiv.org/abs/2304.03766v1 |
POLAR-2, a plastic scintillator based Compton polarimeter, is currently under
development and planned for a launch to the China Space Station in 2025. It is
intended to shed a new light on our understanding of Gamma-Ray Bursts by
performing high precision polarization measurements of their prompt emission.
The instrume... | http://arxiv.org/abs/2307.02128v1 |
Renormalization began as a tool to eliminate divergences in quantum
electrodynamics but it is now the basis of our understanding of physics at
different energy scales. I review its evolution with an eye towards physics
beyond the Wilsonian paradigm. | http://arxiv.org/abs/2309.02484v1 |
Proofs in proof assistants like Coq can be brittle, breaking easily in
response to changes in the terms and types those proofs depend on. To address
this, recent work introduced an algorithm and tool in Coq to automatically
repair broken proofs in response to changes that correspond to type
equivalences. However, many ... | http://arxiv.org/abs/2310.06959v4 |
In this paper we study the problem of determining the largest degree of
stability that can be achieved for SISO systems using negative imaginary state
feedback control. A state feedback result is given for synthesising a
controller for a plant such that a given closed-loop transfer function is
strictly negative imagina... | http://arxiv.org/abs/2303.06861v1 |
The gamma-ray burst GRB 211211A and its associated kilonova-like emission
were reported recently. A significant difference between this association event
and GRB 170817A/AT 2017gfo is that GRB 211211A has a very long duration. In
this paper, we show that this association event may arise from a neutron
star$-$white dwar... | http://arxiv.org/abs/2304.04009v1 |
In this paper, we prove that there is a strongly universal cellular automaton
on the heptagrid with six states which is rotation invariant. This improves a
previous paper of the author with 7 states. Here, the structures are modified
and the number of rules is much less. | http://arxiv.org/abs/2304.13575v2 |
The design of autonomous agents that can interact effectively with other
agents without prior coordination is a core problem in multi-agent systems.
Type-based reasoning methods achieve this by maintaining a belief over a set of
potential behaviours for the other agents. However, current methods are limited
in that the... | http://arxiv.org/abs/2306.06067v1 |
We conjecture that a convex polytope is uniquely determined up to isometry by
its edge-graph, edge lengths and the collection of distances of its vertices to
some arbitrary interior point, across all dimensions and all combinatorial
types. We conjecture even stronger that for two polytopes $P\subset\mathbb R^d$
and $Q\... | http://arxiv.org/abs/2302.14194v2 |
We establish sharp concentration inequalities for sums of dependent random
matrices. Our results concern two models. First, a model where summands are
generated by a $\psi$-mixing Markov chain. Second, a model where summands are
expressed as deterministic matrices multiplied by scalar random variables. In
both models, ... | http://arxiv.org/abs/2307.11632v1 |
Thermal conductivity measurements can provide key and experimentally
verifiable insight into the electronic transport of unconventional
superconductors. In this work, electronic thermal transport of two-dimensional
tight-binding metallic systems with coexisting $d$-wave superconducting (SC)
and antiferromagnetic spin d... | http://arxiv.org/abs/2304.08633v3 |
The AI City Challenge's seventh edition emphasizes two domains at the
intersection of computer vision and artificial intelligence - retail business
and Intelligent Traffic Systems (ITS) - that have considerable untapped
potential. The 2023 challenge had five tracks, which drew a record-breaking
number of participation ... | http://arxiv.org/abs/2304.07500v1 |
Maxmin trees are trees that consist of nodes that are either local minimums
or maximums. Such trees were first studied by Postnikov. Later Dugan, Glennon,
Gunnells, and Steingrimsson introduced the concept of weight to these trees and
proved a bijection between maximum weight maxmin trees and permutations,
defining wei... | http://arxiv.org/abs/2310.14385v2 |
Given an image set without any labels, our goal is to train a model that maps
each image to a point in a feature space such that, not only proximity
indicates visual similarity, but where it is located directly encodes how
prototypical the image is according to the dataset.
Our key insight is to perform unsupervised ... | http://arxiv.org/abs/2307.01421v1 |
A main characteristic of crowdsourcing software development (CSD) is the
complexity of tasks and skills required by workers to achieve successful
software crowdsourcing. The tasks proposed to the crowd in CSD are checked to
ensure they are manageable and achievable. In general, individual tasks come
from general goal-o... | http://arxiv.org/abs/2302.05099v1 |
The spectral gradient method is known to be a powerful low-cost tool for
solving large-scale optimization problems. In this paper, our goal is to
exploit its advantages in the stochastic optimization framework, especially in
the case of mini-batch subsampling that is often used in big data settings. To
allow the spectr... | http://arxiv.org/abs/2306.07379v3 |
This tutorial consists of a brief introduction to the modern control approach
called model predictive control (MPC) and its numerical implementation using
MATLAB. We discuss the basic concepts and numerical implementation of the two
major classes of MPC: Linear MPC (LMPC) and Nonlinear MPC (NMPC). This includes
the var... | http://arxiv.org/abs/2309.00293v1 |
We consider the full flavor structure of the $S_1$ leptoquark model and
derive conservative constraints on the elements of the left- and right-handed
coupling matrices. We focus on the cases where the muon $g-2$ deviation is
explained by muon couplings to the top-quark or to the charm-quark or to all
up-type quarks. Th... | http://arxiv.org/abs/2305.05016v2 |
The quark-hadron transition that happens in ultra-relativistic heavy-ion
collisions is expected to be influenced by the effects of rotation and magnetic
field, both present due to the geometry of a generic non-head-on impact. We
augment the conventional $T$--$\mu_B$ planar phase diagram for QCD matter by
extending it t... | http://arxiv.org/abs/2304.12643v2 |
This paper proposes a data-driven graphical framework for the real-time
search of risky cascading fault chains (FCs). While identifying risky FCs is
pivotal to alleviating cascading failures, the complex spatio-temporal
dependencies among the components of the power system render challenges to
modeling and analyzing FC... | http://arxiv.org/abs/2303.08864v1 |
We provide a unified framework for characterizing pure and approximate
differentially private (DP) learnability. The framework uses the language of
graph theory: for a concept class $\mathcal{H}$, we define the contradiction
graph $G$ of $\mathcal{H}$. Its vertices are realizable datasets, and two
datasets $S,S'$ are c... | http://arxiv.org/abs/2304.03996v4 |
Synthesizing photo-realistic images from a point cloud is challenging because
of the sparsity of point cloud representation. Recent Neural Radiance Fields
and extensions are proposed to synthesize realistic images from 2D input. In
this paper, we present Point2Pix as a novel point renderer to link the 3D
sparse point c... | http://arxiv.org/abs/2303.16482v1 |
Tidal disruption events (TDEs) occur when a star orbiting a massive black
hole is sufficiently close to be tidally ripped apart by the black hole. AT
2022cmc is the first relativistic TDE that was observed (and discovered) as an
optically bright and fast transient, showing signatures of non-thermal
radiation induced by... | http://arxiv.org/abs/2301.00499v1 |
We investigate the cosmological implications of $f(Q)$ gravity, which is a
modified theory of gravity based on non-metricity, in non-flat geometry. We
perform a detailed dynamical-system analysis keeping the $f(Q)$ function
completely arbitrary. As we show, the cosmological scenario admits a
dark-matter dominated point... | http://arxiv.org/abs/2306.13324v1 |
Nearly all current simulations predict that outcomes of the star formation
process, such as the fraction of stars that form in bound clusters (Gamma),
depend on the intensity of star formation activity (SigmaSFR) in the host
galaxy. The exact shape and strength of the predicted correlations, however,
vary from simulati... | http://arxiv.org/abs/2304.02450v2 |
Policy researchers using synthetic control methods typically choose a donor
pool in part by using policy domain expertise so the untreated units are most
like the treated unit in the pre intervention period. This potentially leaves
estimation open to biases, especially when researchers have many potential
donors. We co... | http://arxiv.org/abs/2308.13688v1 |
In this paper, we construct consistent statistical estimators of the Hurst
index, volatility coefficient, and drift parameter for Bessel processes driven
by fractional Brownian motion with $H<1/2$. As an auxiliary result, we also
prove the continuity of the fractional Bessel process. The results are
illustrated with si... | http://arxiv.org/abs/2305.15205v1 |
We investigate, in dark matter and galaxy mocks, the effects of approximating
the galaxy power spectrum-bispectrum estimated covariance as a diagonal matrix,
for an analysis that aligns with the specifications of recent and upcoming
galaxy surveys. We find that, for a joint power spectrum and bispectrum
data-vector, wi... | http://arxiv.org/abs/2306.03137v2 |
We develop and harness a phase field simulation method to study liquid
filling on grooved surfaces. We consider both short-range and long-range
liquid-solid interactions, with the latter including purely attractive and
repulsive interactions, as well as those with short-range attraction and
long-range repulsion. This a... | http://arxiv.org/abs/2305.02779v1 |
Motivated by strategies for targeted microfluidic transport of droplets, we
investigate how sessile droplets can be steered toward a preferred direction
using travelling waves in substrate wettability or deformations of the
substrate. To perform our numerical study, we implement the boundary-element
method to solve the... | http://arxiv.org/abs/2310.19851v1 |
N-functions and their growth and regularity properties are crucial in order
to introduce and study Orlicz classes and Orlicz spaces. We consider
N-functions which are given in terms of so-called associated weight functions.
These functions are frequently appearing in the theory of ultradifferentiable
function classes a... | http://arxiv.org/abs/2301.11594v3 |
Polar-ring galaxies (PRGs) are an outstanding example of galaxies with
misaligned kinematics where a typically red central galaxy is surrounded by a
large-scale ring or disk of stars, gas and dust oriented almost perpendicular
to the main body. It is believed that polar structures are formed in a
secondary event after ... | http://arxiv.org/abs/2310.18597v1 |
Galaxy number counts in the $K$-, $H$-, $I$-, $R$-, $B$- and $U$-bands from
the Durham Extragalactic Astronomy and Cosmology catalogue could be well-fitted
over their whole range using luminosity function (LF) parameters derived from
the SDSS at the bright region and required only modest luminosity evolution
with the s... | http://arxiv.org/abs/2305.04308v2 |
Creating and evaluating games manually is an arduous and laborious task.
Procedural content generation can aid by creating game artifacts, but usually
not an entire game. Evolutionary game design, which combines evolutionary
algorithms with automated playtesting, has been used to create novel board
games with simple eq... | http://arxiv.org/abs/2310.20008v2 |
We perform multi-dimensional core-collapse supernova (CCSN) simulations in a
massive scalar-tensor theory for the first time with a realistic equation of
state and multi-energy neutrino radiation. Among the set of our models varying
the scalar mass and the coupling strength between the scalar and gravitational
fields, ... | http://arxiv.org/abs/2302.09853v2 |
Quasi-local integrals of motion are a key concept underpinning the modern
understanding of many-body localisation, an intriguing phenomenon in which
interactions and disorder come together. Despite the existence of several
numerical ways to compute them - and astoundingly in the light of the
observation that much of th... | http://arxiv.org/abs/2301.01787v4 |
Sparsity is a growing trend in modern DNN models. Existing Sparse-Sparse
Matrix Multiplication (SpMSpM) accelerators are tailored to a particular SpMSpM
dataflow (i.e., Inner Product, Outer Product or Gustavsons), that determines
their overall efficiency. We demonstrate that this static decision inherently
results in a... | http://arxiv.org/abs/2301.10852v1 |
The main aim of this paper is to answer certain open questions related to the
exact values of multidimensional Bohr radii by using the concept of arithmetic
Bohr radius for vector-valued holomorphic functions defined in complete
Reinhardt domains in $\mathbb{C}^n$. More precisely, we study the asymptotic
estimates of t... | http://arxiv.org/abs/2308.07825v3 |
It has been shown previously, that the spatial thermal variation of a thermal
medium can be recast as a variation in the Euclidean metric. It is now extended
to temporal variations in temperature, for a non-relativistic thermal bath,
which remains in local thermal equilibrium. This is achieved by examining the
thermal ... | http://arxiv.org/abs/2301.04827v2 |
With the development of the medical image field, researchers seek to develop
a class of datasets to block the need for medical knowledge, such as
\text{MedMNIST} (v2). MedMNIST (v2) includes a large number of small-sized (28
$\times$ 28 or 28 $\times$ 28 $\times$ 28) medical samples and the
corresponding expert annotat... | http://arxiv.org/abs/2304.10054v1 |
Recommendation system serves as a conduit connecting users to an incredibly
large, diverse and ever growing collection of contents. In practice, missing
information on fresh (and tail) contents needs to be filled in order for them
to be exposed and discovered by their audience. We here share our success
stories in buil... | http://arxiv.org/abs/2306.01720v1 |
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