Results 141 to 150 of about 771,482 (302)
Power spectral density and the brain
Canadian Journal of Statistics, EarlyView.Abstract Time series from M/EEG (magneto/electroencephalography) and ECoG (electrocorticography) recordings are common sources of information about brain function. The power spectral density (PSD) preserves much of this information, up to second order. In the current decade, a burst of brain diagnostics using the slope of log(PSD) has appeared.
Priscilla E. Greenwood +2 more
wiley +1 more source
Stability of Queueing Systems with Impatience, Balking and Non-Persistence of Customers
MathematicsThe operation of many queueing systems is adequately described by the structured multidimensional continuous-time Markov chains. The most well-studied classes of such chains are level-independent Quasi-Birth-and-Death processes, GI/M/1 type and M/G/1 ...
Alexander N. Dudin +3 more
doaj +1 more source
Analysis of Polish business demography using Markov chains [PDF]
The article describes the use of the Markov chains methodology for analysis of demographic evolution of Polish enterprises in the years 2003 - 2009. According to the results’ presented in the article, flexibility of Polish companies’ activity in changing
Natalia Nehrebecka
core
Vine copula knockoffs for variable selection in gene expression studies
Canadian Journal of Statistics, EarlyView.Abstract Identifying clinical and genetic markers is essential for stratifying cancer patients by survival outcomes and guiding personalized treatment strategies. However, gene expression studies often involve high‐dimensional predictors with mixed data types and complex dependence, which complicates reliable variable selection.
José Ulises Márquez Urbina +3 more
wiley +1 more source
A new hybrid model of convolutional neural networks and hidden Markov chains for image classification. [PDF]
Neural Comput Appl, 2023 Goumiri S, Benboudjema D, Pieczynski W.
europepmc +1 more source
A conversation with James V. Zidek
Canadian Journal of Statistics, EarlyView.AbstractThis article documents a series of exchanges between the authors and the senior Canadian statistician Jim Zidek in early 2026. The interview traces his life trajectory, surveying his principal contributions to statistics while offering insights into his motivations, successes, and challenges. Zidek is a Fellow of the Royal Society of Canada and
Christian Genest, Nancy E. Heckman
wiley +1 more source
Covariate dependent Markov chains constructed with gradient boost modeling can effectively generate long-term predictions of obesity trends. [PDF]
BMC Res Notes, 2023 Huang AA, Huang SY.
europepmc +1 more source
The Reconstructability of Markov Chains
The Annals of Probability, 1976 As an extension of the work of Denzel, Kemeny, and Snell on the excessive functions of a continuous time Markov chain, this paper introduces the concept of reconstructability in two forms. First, there is reconstructability from the class of excessive functions, where it is seen that the transition matrix for a transient chain with a finite atomic exit
openaire +3 more sources
Markov Chains and the Cut-Off phenomenon
reservedQuesta tesi esamina le catene di Markov, illustrandone le caratteristiche e le proprietà fondamentali. Successivamente, descrive alcuni esempi di tecniche probabilistiche, spettrali, geometriche e variazionali per la stima del tempo di ...
GALLO, MARCO
core
Clinical Pharmacology &Therapeutics, EarlyView.Accurate assessment of systemic drug exposure in humans remains challenging, as conventional approaches rely on intermittent blood sampling and laboratory‐based assays that are invasive and provide limited temporal resolution. Exhaled breath contains volatile and semi‐volatile compounds arising from drug metabolism and downstream biological processes ...
Kai Fricke +12 more
wiley +1 more source