Results 111 to 120 of about 40,565 (244)

Adaptive Estimation for Weakly Dependent Functional Times Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT We propose adaptive mean and autocovariance function estimators for stationary functional time series under 𝕃p−m‐approximability assumptions. These estimators are designed to adapt to the regularity of the curves and to accommodate both sparse and dense data designs.
Hassan Maissoro, Valentin Patilea, Myriam Vimond   +2 more
wiley   +1 more source

Hybrid Quantum-Classical Algorithm for Robust Optimization via Stochastic-Gradient Online Learning. [PDF]

Quantum Mach Intell
Lim D, Doriguello JF, Rebentrost P.
europepmc   +1 more source

Testing Distributional Granger Causality With Entropic Optimal Transport

Journal of Time Series Analysis, EarlyView.
ABSTRACT We develop a novel nonparametric test for Granger causality in distribution based on entropic optimal transport. Unlike classical mean‐based approaches, the proposed method directly compares the full conditional distributions of a response variable with and without the history of a candidate predictor.
Tao Wang
wiley   +1 more source

Portfolio Optimization: A Neurodynamic Approach Based on Spiking Neural Networks. [PDF]

Biomimetics (Basel)
Khan AH, Mohammed AM, Li S.
europepmc   +1 more source

Tackling nonlinear price impact with linear strategies

Mathematical Finance, Volume 35, Issue 2, Page 422-440, April 2025.
Abstract Empirical studies in various contexts find that the price impact of large trades approximately follows a power law with exponent between 0.4 and 0.7. Yet, tractable formulas for the portfolios that trade off predictive trading signals, risk, and trading costs in an optimal manner are only available for quadratic costs corresponding to linear ...
Xavier Brokmann, David Itkin, Johannes Muhle‐Karbe, Peter Schmidt   +3 more
wiley   +1 more source

Genomic optimum contribution selection and mate allocation using JuMP. [PDF]

Bioinform Adv
Waldmann P.
europepmc   +1 more source

Optimal Portfolio Choice With Cross‐Impact Propagators

Mathematical Finance, EarlyView.
ABSTRACT We consider a class of optimal portfolio choice problems in continuous time where the agent's transactions create both transient cross‐impact driven by a matrix‐valued Volterra propagator, as well as temporary price impact. We formulate this problem as the maximization of a revenue‐risk functional, where the agent also exploits available ...
Eduardo Abi Jaber, Eyal Neuman, Sturmius Tuschmann   +2 more
wiley   +1 more source

Data-driven acceleration of mixed-integer bilinear programs: a comparative study for robot motion planning. [PDF]

Front Robot AI
Lin X.
europepmc   +1 more source

Cross‐Ownership and Endogenous R&D Risk in Cournot Triopoly

The Manchester School, EarlyView.
ABSTRACT We examine how cross‐ownership influences firms' endogenous R&D risk‐taking in a Cournot triopoly, where two “insider” firms hold passive equity stakes in each other, and a third firm remains unaffiliated. Firms invest in stochastic R&D that lowers marginal costs and choose their risk level—measured by outcome variance—prior to quantity ...
Mingqing Xing, Ally Quan Zhang
wiley   +1 more source

Signed Tropicalization of Polar Cones. [PDF]

J Optim Theory Appl
Akian M, Allamigeon X, Gaubert S, Sergeev S.   +3 more
europepmc   +1 more source