Results 51 to 60 of about 594 (117)
Dynamics of Inflation and Inflation Uncertainty Using ARFIMA- GARCH Model [PDF]
Faslnāmah-i Pizhūhish/Nāmah-i Iqtisādī, 2010 In this paper, we study inflation dynamics and then examine the relation of inflation and inflation uncertainty. At first, for filtering of predictable term of inflation series, we used time series model.
Teymour Mohammadi, Reza Teleblou
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A smooth exit from eternal inflation?
Journal of High Energy Physics, 2018 The usual theory of inflation breaks down in eternal inflation. We derive a dual description of eternal inflation in terms of a deformed Euclidean CFT located at the threshold of eternal inflation.
S. W. Hawking, Thomas Hertog
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MathematicsThe modeling of data involving proportions, confined to a unit interval, is crucial in diverse research fields. Such data, expressing part-to-whole relationships, span from the proportion of individuals affected by diseases to the allocation of resources
Guillermo Martínez-Flórez +3 more
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Estimating the Ratio of Means in a Zero-Inflated Poisson Mixture Model
StatsThe problem of estimating the ratio of the means of a two-component Poisson mixture model is considered, when each component is subject to zero-inflation, i.e., excess zero counts. The resulting zero-inflated Poisson mixture (ZIPM) model can be viewed as
Michael Pearce, Michael D. Perlman
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Upper Bounds on the Mass of Fundamental Fields from the Primordial Universe
The Astrophysical JournalWe study the fluctuations in the vacuum zero-point energy associated with quantum fields and their statistical distributions during inflation. It is shown that the perturbations in the vacuum zero-point energy have large amplitudes that are highly non ...
Hassan Firouzjahi
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Zero-inflation in the Multivariate Poisson Lognormal Family
Statistics and ComputingAbstract Analyzing high-dimensional count data is a challenge and statistical model-based approaches provide an adequate and efficient framework thatpreserves explainability. The (multivariate) Poisson-Log-Normal (PLN) modelis one such model: it assumes count data are driven by an underlying structuredlatent Gaussian variable, so that the ...
Batardière, Bastien +3 more
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StatsDatasets with many zero outcomes are common in real-world studies and often exhibit overdispersion and strong correlations among predictors, creating challenges for standard count models.
HM Nayem, B. M. Golam Kibria
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Tests for zero-inflation and overdispersion
, 2008 We propose a new methodology to detect zero-inflation and overdispersion based on the comparison of the expected sample extremes among convexly ordered distributions. The method is very flexible and includes tests for the proportion of structural zeros in zero-inflated models, tests to distinguish between two ordered parametric families and a new ...
Baillo, A. +2 more
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Spontaneous baryogenesis from asymmetric inflaton
Physics Letters B, 2016 We propose a variant scenario of spontaneous baryogenesis from asymmetric inflaton based on current–current interactions between the inflaton and matter fields with a non-zero B−L charge.
Fuminobu Takahashi, Masaki Yamada
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ANALYSIS FACTORS AFFECTING COVID-19 MORTALITY USING COUNT REGRESSION
Jurnal Matematika UNANDThe ”2019 novel coronavirus” known as “ the 2019-nCoV” or simply “COVID-19” has been declared by the World Health organization (WHO), in first quarter of 2020, as a world pandemic and a public health emergency of international concern. Alas, many details
Niswatul Qona'ah, T. Martin Walukusa
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