Results 31 to 40 of about 14,389 (211)

A New Family of Expectiles and its Properties

open access: yesКібернетика та комп'ютерні технології, 2020
Introduction. This paper considers a risk measure called expectile. Expectile is a characteristic of a random variable calculated using the asymmetric least square method. The level of asymmetry is defined by a parameter in the interval (0, 1). Expectile
Viktor Kuzmenko
doaj   +1 more source

Searching for a Theory That Fits the Data: A Personal Research Odyssey

open access: yesEconometrics, 2021
This survey paper discusses the Cointegrated Vector AutoRegressive (CVAR) methodology and how it has evolved over the past 30 years. It describes major steps in the econometric development, discusses problems to be solved when confronting theory with the
Katarina Juselius
doaj   +1 more source

Stochastic approximation for CVaR-based variational inequalities [PDF]

open access: yes2020 59th IEEE Conference on Decision and Control (CDC), 2020
In this paper we study variational inequalities (VI) defined by the conditional value-at-risk (CVaR) of uncertain functions. We introduce stochastic approximation schemes that employ an empirical estimate of the CVaR at each iteration to solve these VIs. We investigate convergence of these algorithms under various assumptions on the monotonicity of the
Verbree, Jasper, Cherukuri, Ashish
openaire   +2 more sources

Risk-averse estimates of effective properties in heterogeneous elasticity

open access: yesComptes Rendus. Mécanique, 2023
In this work, we propose a theoretical framework for computing pessimistic and optimistic estimates of effective properties in the case of heterogeneous elastic materials with uncertain microscopic elastic properties.
Bleyer, Jeremy
doaj   +1 more source

Policy Gradients for CVaR-Constrained MDPs [PDF]

open access: yes, 2014
We study a risk-constrained version of the stochastic shortest path (SSP) problem, where the risk measure considered is Conditional Value-at-Risk (CVaR).
O. Bardou   +4 more
core   +1 more source

Portfolio Optimization based on the Risk Minimization by the Weight-Modified CVaR vs. CVaR Method [PDF]

open access: yesIranian Journal of Finance, 2022
Given the lack of a specific approach to the explanation of values of optimal portfolio weights in the portfolio optimization, the present study aimed to examine large-scale portfolio optimization according to both stock weighting and utilization of SCAD function to minimize the portfolio risk based on the "weight-modified conditional value at risk ...
Mohammad Esmaeil Fadaeinejad   +3 more
openaire   +2 more sources

Fast and Robust Flight Altitude Estimation of Multirotor UAVs in Dynamic Unstructured Environments Using 3D Point Cloud Sensors

open access: yesAerospace, 2018
This paper presents a fast and robust approach for estimating the flight altitude of multirotor Unmanned Aerial Vehicles (UAVs) using 3D point cloud sensors in cluttered, unstructured, and dynamic indoor environments. The objective is to present a flight
Hriday Bavle   +5 more
doaj   +1 more source

Dynamically Augmented CVaR for MDPs

open access: yes, 2022
This paper studies optimization of Conditional Value-at-Risk (CVaR) for Markov Decision Processes (MDPs) with finite state and action sets. It introduces the Dynamically augmented CVaR (DCVaR) risk measure and provides an algorithm for its optimization. This paper investigates a specially defined Robust MDP (RMDP), in which the state space is augmented
Feinberg, Eugene A., Ding, Rui
openaire   +2 more sources

Portfolio analysis with mean-CVaR and mean-CVaR-skewness criteria based on mean–variance mixture models

open access: yesAnnals of Operations Research, 2023
25pages, 1 figure, 2 ...
Nuerxiati Abudurexiti   +5 more
openaire   +2 more sources

Real-Time Object Detection for Autonomous Solar Farm Inspection via UAVs

open access: yesSensors
Robotic missions for solar farm inspection demand agile and precise object detection strategies. This paper introduces an innovative keypoint-based object detection framework specifically designed for real-time solar farm inspections with UAVs.
Javier Rodriguez-Vazquez   +5 more
doaj   +1 more source

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