A survey of quantum alternatives to randomized algorithms: Monte carlo integration and beyond

P Intallura, G Korpas, S Chakraborty… - arxiv preprint arxiv …, 2023 - arxiv.org
Monte Carlo sampling is a powerful toolbox of algorithmic techniques widely used for a
number of applications wherein some noisy quantity, or summary statistic thereof, is sought …

Geometric algorithms for sampling the flux space of metabolic networks

A Chalkis, V Fisikopoulos, E Tsigaridas… - arxiv preprint arxiv …, 2020 - arxiv.org
Systems Biology is a fundamental field and paradigm that introduces a new era in Biology.
The crux of its functionality and usefulness relies on metabolic networks that model the …

Markov chain monte carlo methods for estimating systemic risk allocations

T Koike, M Hofert - Risks, 2020 - mdpi.com
In this paper, we propose a novel framework for estimating systemic risk measures and risk
allocations based on Markov Chain Monte Carlo (MCMC) methods. We consider a class of …

Heavy-dense QCD, sign optimization, and Lefschetz thimbles

G Başar, J Marincel - Physical Review C, 2024 - APS
We study the heavy-dense limit of QCD on the lattice with heavy quarks at high density. The
effective three-dimensional theory has a sign problem which is alleviated by sign …

Comparing and Updating R Packages using MCMC Algorithms for Linear Inverse Modeling of Metabolic Networks

V Girardin, T Grente, N Niquil, P Regnault - 2024 - hal.science
Gathered under the name of metabolic networks, trophic, biochemical, and urban networks
are here handled as a single field. In the Linear Inverse Modeling framework, these highly …

[PDF][PDF] Practical volume estimation by a new annealing schedule for cooling convex bodies

A Chalkis, IZ Emiris, V Fisikopoulos - arxiv preprint arxiv …, 2019 - researchgate.net
We study the problem of estimating the volume of convex polytopes, focusing on H-and V-
polytopes, as well as zonotopes. Although a lot of effort is devoted to practical algorithms for …

Randomized Control in Performance Analysis and Empirical Asset Pricing

C Bachelard, A Chalkis, V Fisikopoulos… - arxiv preprint arxiv …, 2024 - arxiv.org
The present article explores the application of randomized control techniques in empirical
asset pricing and performance evaluation. It introduces geometric random walks, a class of …

Target matrix estimators in risk-based portfolios

M Neffelli - Risks, 2018 - mdpi.com
Portfolio weights solely based on risk avoid estimation errors from the sample mean, but
they are still affected from the misspecification in the sample covariance matrix. To solve this …

Sampling the feasible sets of SDPs and volume approximation

A Chalkis, V Fisikopoulos, P Repouskos… - … in Computer Algebra, 2021 - dl.acm.org
We present algorithmic, complexity, and implementation results on the problem of sampling
points in the interior and the boundary of a spectrahedron, that is the feasible region of a …

Randomized Control in Performance Analysis and Empirical Asset Pricing

A Chalkis, C Bachelard, V Fisikopoulos… - Available at SSRN …, 2024 - papers.ssrn.com
The present article explores the application of randomized control techniques in empirical
asset pricing and performance evaluation. It introduces geometric random walks, a class of …