Results 141 to 150 of about 130,311 (282)

Extremely Fast Maximum Likelihood Estimation of High‐Order Autoregressive Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT We consider the problem of exact maximum likelihood estimation of potentially high‐order (p>50$$ p>50 $$) autoregressive models. We propose an extremely fast coordinate‐wise algorithm for fitting autoregressive models. This fast algorithm exploits several properties of the negative log‐likelihood when parameterised in terms of partial ...
Daniel F. Schmidt, Enes Makalic
wiley   +1 more source

Physiological and biochemical modulation of flax (Linum usitatissimum L.) under drought stress using salicylic acid, indole acetic acid and moringa leaf extract. [PDF]

Sci Rep
Ahsan U, Sajid ZA.
europepmc   +1 more source

Density‐Valued ARMA Models by Spline Mixtures

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper proposes a novel framework for modeling time series of probability density functions by extending autoregressive moving average (ARMA) models to density‐valued data. The method is based on a transformation approach, wherein each density function on a compact domain [0,1]d$$ {\left[0,1\right]}^d $$ is approximated by a B‐spline ...
Yasumasa Matsuda, Rei Iwafuchi
wiley   +1 more source

Bayesian perspective for orientation determination in cryo-EM with application to structural heterogeneity analysis. [PDF]

Acta Crystallogr D Struct Biol
Xu S, Balanov A, Singer A, Bendory T.
europepmc   +1 more source

Robust CDF‐Filtering of a Location Parameter

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper introduces a novel framework for designing robust filters associated with signal plus noise models having symmetric observation density. The filters are obtained by a recursion where the innovation term is a transform of the cumulative distribution function of the residuals.
Leopoldo Catania, Andrew C. Harvey, Alessandra Luati   +2 more
wiley   +1 more source

Multicomponent parenteral lipid emulsions do not prevent liver injury in neonatal pigs with obstructive cholestasis

JCI Insight
Biliary atresia (BA) is a pediatric liver disease that often necessitates parenteral nutrition (PN) to support growth due to impaired liver function. While soy-based lipid emulsions (SLE) are commonly used in PN, they may contribute to cholestatic liver ...
Greg Guthrie, Caitlin Vonderohe, Valeria Meléndez Hebib, Barbara Stoll, Douglas Burrin   +4 more
doaj   +1 more source

Comparative evaluation of skeletally anchored modified intermaxillary versus intramaxillary force systems for maxillary molar distalization: A randomized clinical trial. [PDF]

J Orthod Sci
Elsaharty MA, Abo-Elmahasen MMF, Ghozy EA, Ragab MA.   +3 more
europepmc   +1 more source

Empirical‐Process Limit Theory and Filter Approximation Bounds for Score‐Driven Time Series Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT This article examines the filtering and approximation‐theoretic properties of score‐driven time series models. Under specific Lipschitz‐type and tail conditions, new results are derived, leading to maximal and deviation inequalities for the filtering approximation error using empirical process theory.
Enzo D'Innocenzo
wiley   +1 more source

Parameter Estimation from Phylogenetic Trees Using Neural Networks and Ensemble Learning. [PDF]

Syst Biol
Qin T, van Benthem KJ, Valente L, Etienne RS.   +3 more
europepmc   +1 more source

Autoregressive Hypergraph

Journal of Time Series Analysis, EarlyView.
ABSTRACT Traditional graph representations are insufficient for modelling real‐world phenomena involving multi‐entity interactions, such as collaborative projects or protein complexes, necessitating the use of hypergraphs. While hypergraphs preserve the intrinsic nature of such complex relationships, existing models often overlook temporal evolution in
Xianghe Zhu, Qiwei Yao
wiley   +1 more source