Results 31 to 40 of about 1,261 (134)

Reinforcement Learning for Jump‐Diffusions, With Financial Applications

Mathematical Finance, EarlyView.
ABSTRACT We study continuous‐time reinforcement learning (RL) for stochastic control in which system dynamics are governed by jump‐diffusion processes. We formulate an entropy‐regularized exploratory control problem with stochastic policies to capture the exploration–exploitation balance essential for RL.
Xuefeng Gao, Lingfei Li, Xun Yu Zhou
wiley   +1 more source

Relative Arbitrage Opportunities With Interactions Among N Investors

Mathematical Finance, EarlyView.
ABSTRACT The relative arbitrage portfolio outperforms a benchmark portfolio over a given time‐horizon with probability one. With market price of risk processes depending on the market portfolio and investors, this paper analyzes the multi‐agent optimization of relative arbitrage opportunities in the coupled system of market and wealth dynamics.
Tomoyuki Ichiba, Nicole Tianjiao Yang
wiley   +1 more source

Representation of Forward Performance Criteria with Random Endowment via FBSDE and Its Application to Forward Optimized Certainty Equivalent

Mathematical Finance, EarlyView.
ABSTRACT We extend the notion of forward performance criteria to settings with random endowment in incomplete markets. Building on these results, we introduce and develop the novel concept of forward optimized certainty equivalent (forward OCE), which offers a genuinely dynamic valuation mechanism that accommodates progressively adaptive market model ...
Gechun Liang, Yifan Sun, Thaleia Zariphopoulou   +2 more
wiley   +1 more source

Regulatory Context and Bureaucratic Policy Making: Illustrations From Payment System Regulation in Brazil

Regulation &Governance, EarlyView.
ABSTRACT This study investigates how bureaucratic strategies for structuring the policy environment shape regulatory outcomes, focusing on the extent to which agencies achieve their original policy preferences. Drawing on resource dependence theory and bureaucratic politics, we conceptualize the policy environment in two dimensions: internal ...
João Pedro Haddad, Lauro Emilio Gonzalez   +1 more
wiley   +1 more source

Grocery Retail Location Patterns in Brno: Clustering, Inequality and Street Network Centrality

Tijdschrift voor Economische en Sociale Geografie, EarlyView.
Abstract This study aims to evaluate the spatial distribution and clustering patterns of grocery retail chains in Brno, Czech Republic, focusing on national and multinational stores. By employing Geographic Information Systems and advanced spatial analysis techniques, including the nearest neighbour method, standard deviational ellipse, Kernel density ...
Josef Kunc, František Križan, Markéta Novotná, Ján Výbošťok, Klára Charvátová, Kristína Bilková   +5 more
wiley   +1 more source

In vivo minimally invasive reduction and fixation of sacroiliac luxation using a dedicated novel instrument system

Veterinary Surgery, EarlyView.
Abstract Objective To evaluate the clinical safety and efficacy of a dedicated sacroiliac luxation instrument system (SILIS) featuring a minimally invasive lucent aiming device (MILAD) during osteosynthesis of sacroiliac luxation/fracture (SIL/F). We hypothesized that SILIS‐MILAD assisted surgeries would be safe and as or more accurate than reported ...
Stephanie J. Meilleur, Maria Podsiedlik, Loic M. Dejardin   +2 more
wiley   +1 more source

Mapping Microbial Interaction Networks of Alcoholic Fermentation

eFood, Volume 7, Issue 6, December 2026.
We propose a generalized statistical mechanics framework that integrates ecological niche theory, evolutionary game theory, and the allometric scaling law. This approach enables the reconstruction of dynamic, multilayer, and modular networks from static microbial data during the fermentation process.
Ang Dong, Guanyu Zhou, Huiying Gong, Yu Wang, Xueda Wei, Xiaoming Zhang, Shing‐Tung Yau, Fan Yang, Fei Long, Rongling Wu   +9 more
wiley   +1 more source

Biodiversity and Food Security in Sub‐Saharan Africa: Evidence From a Dynamic Spatial Durbin Model

Plant-Environment Interactions, Volume 7, Issue 6, December 2026.
ABSTRACT This study examines the effect of biodiversity on food security in 40 Sub‐Saharan African countries over the period 2001–2022. Food security is measured using a composite Food Security Index constructed through Principal Component Analysis, while biodiversity is proxied by the Red List Index.
Etonam Julien Adangbedou, Boris Odilon Kounagbè Lokonon   +1 more
wiley   +1 more source

The Communication of a Creeping Crisis: Why Messages Are Recognized but Rarely Taken Into Account in Practices—The Case of Drought

Risk, Hazards &Crisis in Public Policy, Volume 17, Issue 4, December 2026.
ABSTRACT Public communication campaigns on environmental issues rely on economic and ecological arguments, assuming that the recognition of messages is sufficient to produce adjustments in practices. Drought constitutes a specific case of this problem, as a creeping crisis: a slow‐onset hazard whose effects remain weakly visible in everyday life.
Sébastien Rouquette, Inès Bellahcene
wiley   +1 more source

Impact of Wildfire‐Emitted Black Carbon on Snowmelt Across Western North America

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 21, 16 November 2026.
Abstract Wildfires are a major source of black carbon (BC) and their increasing frequency and intensity have enhanced BC deposition onto snowpack across western North America, which accelerates snowmelt and triggers multiple feedbacks that can substantially alter atmospheric composition and regional hydrology. Using the Weather Research and Forecasting
Nilkamal Jaisawal, Cenlin He, Rajesh Kumar, Mark Flanner, Yang Li   +4 more
wiley   +1 more source