Results 101 to 110 of about 15,352,997 (261)
Contemporary Accounting Research, EarlyView.ABSTRACT When managers revise earnings guidance between earnings announcements, they choose not only what to disclose but also where to disclose—in a standalone release, a guidance call, an investor conference, or an analyst/investor (A/I) day. These venues differ in audience, format, and visibility, raising the question of whether venue choice is a ...
Akash Chattopadhyay +2 more
wiley +1 more source
Reliability measures in knowledge structure theory
British Journal of Mathematical and Statistical Psychology, EarlyView.Abstract In knowledge structure theory (KST) framework, this study evaluates the reliability of knowledge state estimation by introducing two key measures: the expected accuracy rate and the expected discrepancy. The accuracy rate quantifies the likelihood that the estimated knowledge state aligns with the true state, while the expected discrepancy ...
Debora de Chiusole +3 more
wiley +1 more source
Optimizing Measures of Risk: A Simplex-like Algorithm [PDF]
The minimization of general risk or dispersion measures is becoming more and more important in Portfolio Choice Theory. There are two major reasons. Firstly, the lack of symmetry in the returns of many assets provokes that the classical optimization of ...
Silvia Mayoral +2 more
core
British Journal of Mathematical and Statistical Psychology, EarlyView.Abstract Two classes of probabilistic models are compared: the true and error (TE) type models and models in the family of the basic local independence model (BLIM). The former finds applications in the study of human preference, whereas the latter has been developed within the theory of knowledge structures with the aim of producing knowledge ...
Luca Stefanutti +2 more
wiley +1 more source
Comparison of response surface methodology and the Nelder and Mead simplex method for optimization in microsimulation models [PDF]
Microsimulation models are increasingly used in the evaluation of cancer screening. Latent parameters of such models can be estimated by optimization of the goodness-of-fit.
Neddermeijer, H.G. +4 more
core
Modelo matemático para la construcción de índices de diferenciación estratégica.
Universidad y Empresa, 2010 To measure strategic convergence and related profit erosion are key steps in determining the attractiveness of an industry. The basic assumptions underlying the construction of strategic differentiation indices (SDIs) are analyzed.
Gabriel Turbay Bernal
doaj
British Journal of Mathematical and Statistical Psychology, EarlyView.Abstract Traditional item response theory (IRT) models involve symmetric response probability functions, but a developing area of research has focused on asymmetric alternatives. To date, these studies have focused primarily on introducing new asymmetric models, detailing their mathematical formulations, explaining how to interpret their item ...
Hyejin Shim, Wes Bonifay
wiley +1 more source
2D Piecewise Linear Scalar Fields with Invertible Integral Lines
Computer Graphics Forum, EarlyView.Abstract Integral lines of the gradient flow are standard features in continuously differentiable scalar fields that enjoy some useful properties: They cover the domain densely, do not split, merge, or intersect, and are therefore invertible. For widely used discretizations of scalar fields, the corresponding polygonal approximations of integral lines ...
T.L. Erxleben +3 more
wiley +1 more source
Dvoretzky's theorem and the complexity of entanglement detection
Discrete Analysis, 2017 Dvoretzky's theorem and the complexity of entanglement detection, Discrete Analysis 2017:1, 20 pp. Let $H$ be a Hilbert space. A _state_ on $H$ is a linear operator $\rho:H\to H$ such that tr$(\rho)=1$ and tr$(\rho P)\geq 0$ for every orthogonal ...
Guillaume Aubrun, Stanislaw Szarek
doaj +1 more source