Results 21 to 30 of about 3,889 (138)

Nonextensive Entropies derived from Form Invariance of Pseudoadditivity

, 2002
The form invariance of pseudoadditivity is shown to determine the structure of nonextensive entropies. Nonextensive entropy is defined as the appropriate expectation value of nonextensive information content, similar to the definition of Shannon entropy.
A.K. Rajagopal, C. Tsallis, C. Tsallis, C. Tsallis, C. Tsallis, E.M.F. Curado, E.M.F. Curado, E.M.F. Curado, H. Balow, Hiroki Suyari, K.S. Fa, L. Borland, L. Borland, M. Hotta, M.L. Lyra, P.T. Landsberg, R.J.V. dos Santos, R.S. Johal, S. Abe, S. Abe, S. Abe, S. Abe, T. Yamano, U.M.S. Costa   +23 more
core   +1 more source

Quantifying functionally equivalent species and ecological network dissimilarity with optimal transport distances

Methods in Ecology and Evolution, Volume 17, Issue 2, Page 301-321, February 2026.
Abstract Quantifying the structure and dynamics of species interactions in ecological communities is fundamental to studying ecology and evolution. While there are numerous approaches to analysing ecological networks, there is not yet an approach that can (1) quantify dissimilarity in the global structure of ecological networks that range from ...
Kai M. Hung, Lydia Beaudrot, Ann E. Finneran, Alex G. Zalles, César A. Uribe   +4 more
wiley   +1 more source

A Geometrical Characterization of the Twin Paradox and its Variants [PDF]

, 2010
The aim of this paper is to provide a logic-based conceptual analysis of the twin paradox (TwP) theorem within a first-order logic framework. A geometrical characterization of TwP and its variants is given.
A. Einstein, A.A. Robb, A.K. Guts, B. Mundy, B. Mundy, C.C. Chang, Gergely Székely, H. Andréka, H. Andréka, J. Ax, J. Väänänen, J.W. Schutz, J.W. Schutz, J.W. Schutz, J.X. Madarász, P. Suppes, P. Suppes, P.G. Vroegindewey, P.G. Vroegindewey, R. Goldblatt, T. Benda, V. Fock, V. Pambuccian   +22 more
core   +1 more source

The Multi‐BMBY Mechanism: Proportionality‐Preserving and Strategyproof Ownership Restructuring in Private Companies

Journal of Economics &Management Strategy, Volume 35, Issue 1, Page 50-58, Spring 2026.
ABSTRACT For privately held startups, restructuring ownership is challenging due to diverse and uncertain valuations among owners. Traditional approaches, including the BMBY mechanism for equal partnerships, fail to address the complexities of multi‐owner settings and do not elicit true valuations.
Gal Danino, Moran Koren, Omer Madmon
wiley   +1 more source

Portfolio Optimization for Pension Purposes: Literature Review

Journal of Economic Surveys, Volume 40, Issue 1, Page 45-72, February 2026.
ABSTRACT This systematic review identifies persistent challenges and gaps in the literature on pension portfolio optimization models. We searched, selected, and critically analyzed 82 articles from three major academic databases published over the past decade to investigate the barriers to the effective implementation of these models.
Leonardo Moreira, Igor Leão dos Santos, Pedro Henrique Gonzalez   +2 more
wiley   +1 more source

Models in Decision‐Making Under Risk and Uncertainty

Journal of Economic Surveys, Volume 40, Issue 1, Page 304-320, February 2026.
ABSTRACT This paper systematically compares dominant frameworks for modeling decision‐making under risk and uncertainty, evaluating their theoretical trade‐offs and practical relevance for economic research. We establish key criteria for model selection—including predictive accuracy, descriptive realism, computational tractability, and ecological ...
Martin Höppner
wiley   +1 more source

Narrow Framing in Risk Aversion Experiments: Further Evidence From a Wide Replication

Journal of Applied Econometrics, Volume 41, Issue 1, Page 127-133, January/February 2026.
ABSTRACT When evaluating risky options in experimental settings, do individuals integrate background finances with experimental earnings? An existing study, which combines experimental data on lottery choices and administrative data on personal wealth in Denmark, shows that individuals evaluate experimental payoffs in isolation.
Ariel Gu, Matthew J. Walker, Hong Il Yoo
wiley   +1 more source

Upper Comonotonicity and Risk Aggregation Under Dependence Uncertainty

Mathematical Finance, Volume 36, Issue 1, Page 118-139, January 2026.
ABSTRACT In this paper, we study dependence uncertainty and the resulting effects on tail risk measures, which play a fundamental role in modern risk management. We introduce the notion of a regular dependence measure, defined on multimarginal couplings, as a generalization of well‐known correlation statistics such as the Pearson correlation. The first
Corrado De Vecchi, Max Nendel, Jan Streicher   +2 more
wiley   +1 more source

From Prediction to Prevention: Using Text Mining and Explainable Machine Learning for Urban Bus Accident Analytics

Risk Analysis, Volume 46, Issue 1, January 2026.
ABSTRACT Urban bus accidents present major safety and operational challenges, particularly in densely populated metropolitan areas. This study develops a machine learning‐based analytical framework to identify, quantify, and interpret the factors associated with severe bus accidents.
Bowei Chen, Yufei Huang, Yu Zheng, Xiaofeng Liu   +3 more
wiley   +1 more source

New Class of Generalized Extensive Entropies for Studying Dynamical Systems in Highly Anisotropic Phase Space

, 2013
Starting from the geometrical interpretation of the R\'enyi entropy, we introduce further extensive generalizations and study their properties.
Sonnino, Giorgio, Steinbrecher, György
core   +1 more source