Results 181 to 190 of about 180,889 (278)

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

British 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

Khovanov Laplacian and Khovanov Dirac for knots and links. [PDF]

J Phys Complex
Jones B, Wei GW.
europepmc   +1 more source

Modelling Hierarchical Configurations in Innovation Research With Two‐Step QCA: Methodological Recommendations and an Application to Workarounds

Creativity and Innovation Management, EarlyView.
ABSTRACT Creativity and innovation are often understood as the result of a complex interplay of hierarchical factors, such as national, regional and firm characteristics, or between organisational and individual factors. While recent applications of qualitative comparative analysis (QCA) have begun to model such configurational links, their ...
Luc Sandfort, Talea Hellweg, Katharina Radermacher, Martin R. Schneider   +3 more
wiley   +1 more source

Hirota, Fay and geometry. [PDF]

Lett Math Phys
Eynard B, Oukassi S.
europepmc   +1 more source

Neural Local Inter‐reflection Modeling for Garment Fold Rendering

Computer Graphics Forum, EarlyView.
Abstract Realistic garment rendering requires simulating complex multi‐bounce light paths within intricate fold geometries. In these regions, conventional path tracing is computationally expensive as light becomes trapped, necessitating high bounce counts for convergence.
Jooeun Son, Nuri Ryu, Gyoonseo Kim, Joo Ho Lee, Seungyong Lee   +4 more
wiley   +1 more source

Nonlinear oscillations of a lumped system with series spring, piezoelectric device, and feedback controller. [PDF]

Sci Rep
Abohamer MK, Amer TS, Galal AA, Darweesh MA, Arab A, Bahnasy TA.   +5 more
europepmc   +1 more source

Progressively Projected Newton's Method

Computer Graphics Forum, EarlyView.
Abstract Newton's Method is widely used to find the solution of complex non‐linear simulation problems. To guarantee a descent direction, it is common practice to clamp the negative eigenvalues of each element Hessian prior to assembly—a strategy known as Projected Newton (PN)—but this perturbation often hinders convergence.
J. A. Fernández‐Fernández, F. Löschner, J. Bender   +2 more
wiley   +1 more source

Analytical and data-driven fractional-order malaria transmission model with vector and non-vector pathways. [PDF]

BMC Infect Dis
Ahman QO, Okpara PA, Agbata BC, Senewo EO, Didigwu NE.   +4 more
europepmc   +1 more source

Survey on differential estimators for 3d point clouds

Computer Graphics Forum, EarlyView.
Abstract Recent advancements in 3D scanning technologies, including LiDAR and photogrammetry, have enabled the precise digital replication of real‐world objects. These methods are widely used in fields such as GIS, robotics, and cultural heritage. However, the point clouds generated by such scans are often noisy and unstructured, posing challenges for ...
Léo Arnal–Anger, Thibault Lejemble, David Coeurjolly, Loïc Barthe, Nicolas Mellado   +4 more
wiley   +1 more source

On the geometry of topological defects in glasses. [PDF]

Nat Commun
Wu ZW, Barrat JL, Kob W.
europepmc   +1 more source