Reconstruction of the dark energy scalar field potential by Gaussian
process
May 8, 2023
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Physics
Cosmology and Nongalactic Astrophysics
Dark energy is believed to be responsible for the acceleration of the
universe. In this paper, we reconstruct the dark energy scalar field potential
V(ϕ) using the Hubble parameter H(z) through Gaussian Process analysis.
Our goal is ...
Distributed Coordination of Multi-Microgrids in Active Distribution
Networks for Provisioning Ancillary Services
May 8, 2023
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Electrical Engineering and Systems Science
Computer Science
Systems and Control
Systems and Control
With the phenomenal growth in renewable energy generation, the conventional
synchronous generator-based power plants are gradually getting replaced by
renewable energy sources-based microgrids. Such transition gives rise to the
challenges o...
Autumn: A Scalable Read Optimized LSM-tree based Key-Value Stores with
Fast Point and Range Read Speed
May 8, 2023
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Computer Science
Databases
Data Structures and Algorithms
Information Retrieval
The Log Structured Merge Trees (LSM-tree) based key-value stores are widely
used in many storage systems to support a variety of operations such as
updates, point reads, and range reads. Traditionally, LSM-tree's merge policy
organizes data...
Inverse mean curvature flow and Ricci-pinched three-manifolds
May 8, 2023
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Mathematics
Differential Geometry
Let (M,g) be a complete, connected, non-compact Riemannian three-manifold
with non-negative Ricci curvature satisfying
Ric≥εtr(Ric)g for some ε>0. In
this note, we give a new proof based on in...
A note on Sarnak's density hypothesis for Sp4
May 8, 2023
Mathematics
Number Theory
In this note we prove Sarnak's (spherical) density hypothesis for the full
discrete spectrum of the quotients Γpa(q)\Sp4(R), where Γpa(q) are paramodular
groups with square-...
Evaluating Impact of User-Cluster Targeted Attacks in Matrix
Factorisation Recommenders
May 8, 2023
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Computer Science
Information Retrieval
In practice, users of a Recommender System (RS) fall into a few clusters
based on their preferences. In this work, we conduct a systematic study on
user-cluster targeted data poisoning attacks on Matrix Factorisation (MF) based
RS, where an...
Thermal Hall effects in quantum magnets
May 8, 2023
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Physics
Strongly Correlated Electrons
Mesoscale and Nanoscale Physics
Materials Science
In the recent years, the thermal Hall transport has risen as an important
diagnosis of the physical properties of the elementary excitations in various
quantum materials, especially among the Mott insulating systems where the
electronic tra...
LMPT: Prompt Tuning with Class-Specific Embedding Loss for Long-tailed
Multi-Label Visual Recognition
May 8, 2023
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Computer Science
Computer Vision and Pattern Recognition
Long-tailed multi-label visual recognition (LTML) task is a highly
challenging task due to the label co-occurrence and imbalanced data
distribution. In this work, we propose a unified framework for LTML, namely
prompt tuning with class-spec...
Coexistence of Superconductivity and Superionicity in Li2MgH16
May 8, 2023
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Physics
Superconductivity
Materials Science
We study superconductivity in the superionic phase of the clathrate hydride
Li2MgH16, where hydrogen ions diffuse among the lattice formed by
lithium and magnesium ions. By employing the stochastic path-integral approach,
we non-per...
Learning to Evaluate the Artness of AI-generated Images
May 8, 2023
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Computer Science
Computer Vision and Pattern Recognition
Artificial Intelligence
Assessing the artness of AI-generated images continues to be a challenge
within the realm of image generation. Most existing metrics cannot be used to
perform instance-level and reference-free artness evaluation. This paper
presents ArtScor...