Results 101 to 110 of about 248,977 (280)

Measuring the time‐varying market efficiency in the prewar and wartime Japanese stock market, 1924–1943

open access: yesAsia‐Pacific Economic History Review, Volume 65, Issue 1, Page 131-159, March 2025.
Abstract This study examines the adaptive market hypothesis in the prewar and wartime Japanese stock market using a new market capitalization‐weighted price index. First, we find that the degree of market efficiency varies over time and with major historical events. This implies that the hypothesis is supported in this market.
Kenichi Hirayama, Akihiko Noda
wiley   +1 more source

Algebraic methods for chromatic polynomials

open access: yesEuropean Journal of Combinatorics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Biggs, N.L., Klin, M.H., Reinfeld, P.
openaire   +2 more sources

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

open access: yesBritish 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   +8 more
wiley   +1 more source

Bayesian inference for dynamic Q matrices and attribute trajectories in hidden Markov diagnostic classification models

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley   +1 more source

Computing Skinning Weights via Convex Duality

open access: yesComputer Graphics Forum, EarlyView.
We present an alternate optimization method to compute bounded biharmonic skinning weights. Our method relies on a dual formulation, which can be optimized with a nonnegative linear least squares setup. Abstract We study the problem of optimising for skinning weights through the lens of convex duality.
J. Solomon, O. Stein
wiley   +1 more source

From combinatorial optimization to real algebraic geometry and back

open access: yesCroatian Operational Research Review, 2014
In this paper, we explain the relations between combinatorial optimization and real algebraic geometry with a special focus to the quadratic assignment problem.
Janez Povh
doaj   +1 more source

Disentangling mechanisms that mediate soil fungal α and β diversity during forest secondary succession

open access: yesEcography, EarlyView.
Understanding the mechanisms controlling community diversity is a central, topic in ecology, particularly in microbial ecology. Although species pools and local assembly processes are believed to play non‐negligible roles in shaping the within‐community (α) and among‐community (β) diversity of microbial communities, their relative importance as ...
Xiao Zhang   +10 more
wiley   +1 more source

Coexistence of algebraic and non-algebraic limit cycles for quintic polynomial differential systems

open access: yesElectronic Journal of Differential Equations, 2017
In the work by Gine and Grau [11], a planar differential system of degree nine admitting a nested configuration formed by an algebraic and a non-algebraic limit cycles explicitly given was presented.
Ahmed Bendjeddou, Rachid Cheurfa
doaj  

Recursive Polynomial Sets and Their Some Algebraic Applications

open access: yesCumhuriyet Science Journal
This paper primarily defines the framework for a new class of polynomial sets over a finite field GF (2), providing a recursive definition and delving into pertinent algebraic properties.
Hacı Aktaş
doaj   +1 more source

Polynomial Reproduction of Vector Subdivision Schemes

open access: yesAbstract and Applied Analysis, 2014
We discuss the polynomial reproduction of vector subdivision schemes with general integer dilation m≥2. We first present a simple algebraic condition for polynomial reproduction of such schemes with standard subdivision symbol.
Y. F. Shen, D. H. Yuan, S. Z. Yang
doaj   +1 more source

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