Results 21 to 30 of about 313 (110)

Gittins index based control policy for a class of pursuit‐evasion problems [PDF]

IET Control Theory & Applications, 2018
In this study, the authors develop a novel approach to a class of pursuit‐evasion problems modelled in the form of discrete time feedback control systems, where the opposing parties have asymmetric capability. The authors assume the control policy of the evader, described as a random variable, is unknown to the pursuer.
Tan, Cheng, Xu, Changbao, Yang, Lin, Wong, Wing Shing   +3 more
openaire   +2 more sources

On the Gittins Index for Multiarmed Bandits

The Annals of Applied Probability, 1992
The authors reprove the optimality of the Gittins index policy for the multiarmed bandit problem in a simple, intuitive way. Previous research is reviewed in the light of this new proof and it is shown that the optimal value function is a submodular set function of the available projects.
openaire   +3 more sources

Gittins' theorem under uncertainty

, 2022
We study dynamic allocation problems for discrete time multi-armed bandits under uncertainty, based on the the theory of nonlinear expectations. We show that, under independence assumption on the bandits and with some relaxation in the definition of ...
Treetanthiploet, Tanut, Cohen, Samuel N
core   +1 more source

A comparison of monitoring methods for inferring demographics of a pond‐breeding amphibian population over 14 years

The Journal of Wildlife Management, EarlyView.
We used 4 sampling methods to estimate or index the abundance and sex ratio of spotted salamanders (Ambystoma maculatum) over 14 years. The present study highlights the importance of considering individual heterogeneity in capture probability when estimating abundance of pond‐breeding amphibians from capture data with imperfect detection. Abstract Long‐
Patrick D. Moldowan, Doug P. Armstrong, Glenn J. Tattersall, Njal Rollinson   +3 more
wiley   +1 more source

Multi-Armed Bandits and the Gittins Index

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1980
Summary A plausible conjecture (C) has the implication that a relationship (12) holds between the maximal expected rewards for a multi-project process and for a one-project process (F and φi respectively), if the option of retirement with reward M is available.
openaire   +2 more sources

Rethinking informal circularity through metanarratives: Tensions, insights and directions for management research

International Journal of Management Reviews, EarlyView.
Abstract This study explores the intersection of the informal and circular economies and its implications for business, management and organization (BMO) scholarship and practice. Informal circularity, practices of collecting, reusing, repairing, recycling and repurposing materials outside formal economic, legal and regulatory arrangements, constitutes
Tulin Dzhengiz, Ling Li, Vildan Tasli Karabulut, Maryline Kiptoo   +3 more
wiley   +1 more source

Quickest way to less headache days: an operational research model and its implementation for chronic migraine

BMC Neurology
Objective Choosing migraine prevention medications often involves trial and error. Operations research methodologies, however, allow us to derive a mathematically optimum way to conduct such trial and error processes.
Irene Lo, Pengfei Zhang
doaj   +1 more source

From cells to reefs—fluorescent protein distribution reveals species‐specific photoadaptation in closely related Caribbean corals

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Fluorescent proteins (FPs) are diverse and widespread pigments in reef‐building corals, assumed to modulate the internal light microenvironment within coral tissues. Yet, their precise distribution and organization at the tissue and cellular levels remain poorly understood, limiting our understanding of their functional roles.
Giulia M. Marchioro, Johanna Sonnleitner, Helena E. Silberhumer, Michael Schagerl, Luise Kruckenhauser, Gerhard J. Herndl, Igor Adameyko, Pedro R. Frade   +7 more
wiley   +1 more source

‘From a place of vulnerability’: Experiences of Voice Dialogue to explore self‐criticism

Psychology and Psychotherapy: Theory, Research and Practice, Volume 99, Issue 2, Page 386-404, June 2026.
Abstract Objective/Background Voice Dialogue is a method used to explore and understand different parts of the self. It involves direct communication between a facilitator and aspects of the self to enhance awareness, understanding and differentiation from inner voices.
Sarmini Indramohan, Richard J. Brown, Katie Reid, Matthew Pugh, Tobyn Bell   +4 more
wiley   +1 more source

Hydro‐Mechanical Controls on Swarm Recurrence on the Westernmost Gofar Transform Fault, East Pacific Rise

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Swarms are microearthquake clusters governed by aseismic deformation, fluid migration, and stress changes, but the underlying mechanisms for their recurrence remain elusive. In 2008, abundant swarms were observed on the westernmost Gofar transform fault.
Lintong Jiang, Shihuai Zhang, Xiaying Li
wiley   +1 more source