Results 141 to 150 of about 7,594,968 (240)

Nonlinear permuted Granger causality

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Granger causality is an established, contentious method that seeks causal temporal connections via association and precedence. While not true causal inference, it assists in mapping networks of information flow that may warrant further study.
Noah D. Gade, Jordan Rodu
wiley   +1 more source

Cerebellar Cognitive Affective Syndrome in Spinocerebellar Ataxia Type 6. [PDF]

open access: yesCerebellum
Machado FM   +5 more
europepmc   +1 more source

Analyzing zero‐truncated recurrent event data by stratified regression with time‐varying coefficients

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract This article presents a strategy for conducting regression analysis of zero‐truncated recurrent event data. The research is partly motivated by a pediatric mental health care (PMHC) program based on administrative data. We are particularly interested in how the occurrence of an event depends on its past occurrences and the associated ...
Anqi A. Chen   +3 more
wiley   +1 more source

Remarks on positive definite functions on a group

open access: yes
We study the operator-valued positive definite functions on a group using positive block matrices. We give an alternative proof to Brehmer positivity for doubly commuting contractions. We classify all commuting unitary representations over a finite group.
Tomar, Nitin, Pal, Sourav, Jana, Swapan
core  

Sparse maximum likelihood estimation of regression models

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract For regression model selection and estimation, we study a small set of candidate models of maximum likelihood from which all information criteria such as the Akaike information criterion (AIC) and the Bayesian information criterion (BIC) choose their models.
Min Tsao
wiley   +1 more source

Positive definite norm dependent functions on l[infinity]

open access: yes
It is well known that a function exp{z.sfnc;(max(z.sfnc;xz.sfnc;, z.sfnc;yz.sfnc;))[alpha]} is positive definite on 2 for every [alpha] [set membership, variant] (0, 1].
Misiewicz, Jolanta K.
core  

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