Results 51 to 60 of about 396,333 (302)

adabag: An R Package for Classification with Boosting and Bagging

Journal of Statistical Software, 2013
Boosting and bagging are two widely used ensemble methods for classification. Their common goal is to improve the accuracy of a classifier combining single classifiers which are slightly better than random guessing.
Esteban Alfaro, Matias Gamez, Noelia García   +2 more
doaj   +1 more source

On Cauchy-Stieltjes Kernel Families [PDF]

, 2012
We explore properties of Cauchy-Stieltjes families that have no counterpart in exponential families. We relate the variance function of the iterated Cauchy-Stieltjes family to the pseudo-variance function of the initial Cauchy-Stieltjes family.
Bryc, Wlodek, Fakhfakh, Raouf, Hassairi, Abdelhamid   +2 more
core  

Variational Bayesian Approximation (VBA): Implementation and Comparison of Different Optimization Algorithms

Entropy
In any Bayesian computations, the first step is to derive the joint distribution of all the unknown variables given the observed data. Then, we have to do the computations.
Seyedeh Azadeh Fallah Mortezanejad, Ali Mohammad-Djafari   +1 more
doaj   +1 more source

Gravitational shock waves and scattering amplitudes

Journal of High Energy Physics, 2020
We study gravitational shock waves using scattering amplitude techniques. After first reviewing the derivation in General Relativity as an ultrarelativistic boost of a Schwarzschild solution, we provide an alternative derivation by exploiting a novel ...
Andrea Cristofoli
doaj   +1 more source

Imprecise probability models for inference in exponential families [PDF]

, 2005
When considering sampling models described by a distribution from an exponential family, it is possible to create two types of imprecise probability models.
De Cooman, Gert, Quaeghebeur, Erik
core  

Exponential families, Kahler geometry and quantum mechanics

, 2012
Exponential families are a particular class of statistical manifolds which are particularly important in statistical inference, and which appear very frequently in statistics.
Amari, Ashtekar, Brody, Brody, Brody, Chernoff, Cirelli, Cirelli, Combescure, Dombrowski, Gibbons, Glauber, Heslot, Heslot, Hughston, Jost, Kibble, Kostant, Lang, Marchildon, Mathieu Molitor, Michael, Minic, Minic, Molitor, Murray, Nomizu, Nomizu, Perelomov, Radcliffe, Rawnsley, Schrödinger, Souriau, Twareque Ali   +33 more
core   +1 more source

Retrotransposon Expression Is Upregulated in Adulthood and Suppressed during Regeneration of the Limb in the Axolotl (Ambystoma mexicanum)

Advanced Biology, EarlyView.
The axolotl's remarkable regenerative abilities decline with age, the causes may include the numerous repetitive elements within its genome. This study uncovers how Ty3 retrotransposons and coexpression networks involving muscle and immune pathways respond to aging and regeneration, suggesting that transposons respond to physiological shifts and may ...
Samuel Ruiz‐Pérez, Nicolás Alcaraz, Karla Torres‐Arciga, José Antonio Ocampo‐Cervantes, Alejandra Cervera, Clementina Castro‐Hernández, Cynthia Gabriela Sámano‐Salazar, Ernesto Soto‐Reyes, Rodrigo González‐Barrios   +8 more
wiley   +1 more source

Superintegrability of matrix Student's distribution

Physics Letters B, 2022
For ordinary matrix models, the eigenvalue probability density decays rapidly as one goes to infinity, in other words, has “short tails”. This ensures that all the multiple trace correlators (multipoint moments) are convergent and well-defined.
A. Mironov, A. Morozov, A. Popolitov
doaj  

A genetic bistable switch utilizing nonlinear protein degradation

Journal of Biological Engineering, 2012
Background Bistability is a fundamental property in engineered and natural systems, conferring the ability to switch and retain states. Synthetic bistable switches in prokaryotes have mainly utilized transcriptional components in their construction ...
Huang Daniel, Holtz William J, Maharbiz Michel M   +2 more
doaj   +1 more source

On the Chi square and higher-order Chi distances for approximating f-divergences

, 2013
We report closed-form formula for calculating the Chi square and higher-order Chi distances between statistical distributions belonging to the same exponential family with affine natural space, and instantiate those formula for the Poisson and isotropic ...
Nielsen, Frank, Nock, Richard
core   +1 more source