Results 71 to 80 of about 58,186 (254)

Approximating Transitive Reductions for Directed Networks [PDF]

, 2009
We consider minimum equivalent digraph problem, its maximum optimization variant and some non-trivial extensions of these two types of problems motivated by biological and social network applications. We provide $\frac{3}{2}$-approximation algorithms for all the minimization problems and 2-approximation algorithms for all the maximization problems ...
Piotr Berman, Bhaskar DasGupta, Marek Karpinski   +2 more
openaire   +1 more source

Rethinking the Normative Foundations of the Stakeholder Theory Through the Civil Economy Approach: Insights From a Relationality‐Based Anthropological Perspective

Business Ethics, the Environment &Responsibility, EarlyView.
ABSTRACT A growing enthusiasm to reconsider the normative foundations of the stakeholder theory is spreading in related literature. Current research mainly focuses on religious, spiritual, and philosophical underpinnings to reexamine these foundations.
Roberta Sferrazzo, Giorgia Nigri, Renato Ruffini   +2 more
wiley   +1 more source

Open-ended Learning in Symmetric Zero-sum Games [PDF]

, 2019
Zero-sum games such as chess and poker are, abstractly, functions that evaluate pairs of agents, for example labeling them `winner' and `loser'. If the game is approximately transitive, then self-play generates sequences of agents of increasing strength.
Bachrach, Yoram, Balduzzi, David, Czarnecki, Wojciech M., Garnelo, Marta, Graepel, Thore, Jaderberg, Max, Perolat, Julien   +6 more
core   +1 more source

A tutorial on Bayesian model averaging for exponential random graph models

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract The use of exponential random graph models (ERGMs) is becoming prevalent in psychology due to their ability to explain and predict the formation of edges between vertices in a network. Valid inference with ERGMs requires correctly specifying endogenous and exogenous effects as network statistics, guided by theory, to represent the network ...
Ihnwhi Heo, Jan‐Willem Simons, Haiyan Liu   +2 more
wiley   +1 more source

Locally $s$-distance transitive graphs [PDF]

, 2010
We give a unified approach to analysing, for each positive integer $s$, a class of finite connected graphs that contains all the distance transitive graphs as well as the locally $s$-arc transitive graphs of diameter at least $s$. A graph is in the class
Alice Devillers, Cai Heng, Cheryl E. Praeger, Li, Michael Giudici   +4 more
core   +1 more source

An extension of the basic local independence model to multiple observed classifications

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract The basic local independence model (BLIM) is appropriate in situations where populations do not differ in the probabilities of the knowledge states and the probabilities of careless errors and lucky guesses of the items. In some situations, this is not the case. This work introduces the multiple observed classification local independence model
Pasquale Anselmi, Debora de Chiusole, Egidio Robusto, Alice Bacherini, Giulia Balboni, Andrea Brancaccio, Ottavia M. Epifania, Noemi Mazzoni, Luca Stefanutti   +8 more
wiley   +1 more source

To vary or not to vary: A flexible empirical Bayes factor for testing variance components

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Random effects are the gold standard for capturing structural heterogeneity, such as individual differences or temporal dependence. Yet testing their presence is difficult because variance components are constrained to be non‐negative, creating a boundary problem. This paper introduces a flexible empirical Bayes factor (EBF) for testing random
Fabio Vieira, Hongwei Zhao, Joris Mulder
wiley   +1 more source

NetMetaEasy: enabling rapid and user‐friendly network meta‐analysis (NMA) for comparative effectiveness research

British Journal of Pharmacology, EarlyView.
Background and Purpose Network meta‐analysis (NMA) enables the simultaneous comparison of multiple treatments by combining direct and indirect evidence across a network of studies. While its application is rapidly expanding in pharmacological research and clinical guideline development, performing NMA typically requires advanced statistical knowledge ...
János Tibor Fekete, András Komócsi, Balázs Győrffy   +2 more
wiley   +1 more source

Accuracy of Static, Dynamic, and Robotic Guided Surgery in Immediate Implant Placement: A Systematic Review and Network Meta‐Analysis

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives To evaluate the accuracy of static, dynamic, and robotic computer‐assisted protocols in immediate implant placement (IIP), compared to freehand (FH) techniques. Materials and Methods A systematic search was conducted for studies published through March 2025.
Paolo Nava, Hamoun Sabri, Parham Hazrati, Carlo Nava, Muhammad H. A. Saleh, Hom‐Lay Wang   +5 more
wiley   +1 more source

Weight Loss as a Determinant of Histological Improvement in Metabolic Dysfunction‐Associated Steatotic Liver Disease in People With Obesity. A Systematic Review and Network Meta‐Analysis of Randomised Clinical Trials

Diabetes, Obesity and Metabolism, EarlyView.
ABSTRACT Background Metabolic dysfunction‐associated steatotic liver disease (MASLD) is closely linked to obesity and insulin resistance, and sustained weight loss is associated with histological improvement. Whether different obesity‐management modalities exert weight‐independent hepatic effects remains uncertain.
Matteo Monami, Amanda Belluzzi, Silvio Buscemi, Luca Busetto, Ricardo Cohen, Maurizio De Luca, Andrea Galli, Edoardo Mannucci, Tarissa Z. Petry, Benedetta Ragghianti, Paolo Sbraccia, Dror Dicker   +11 more
wiley   +1 more source