نتایج جستجو برای: gaussian hf hyper chem

تعداد نتایج: 145747  

2009
Philip N. Garner

We show that estimation of parameters for the popular Gaussian model of speech in noise can be regularised in a Bayesian sense by use of simple prior distributions. For two example prior distributions, we show that the marginal distribution of the uncorrupted speech is non-Gaussian, but the parameter estimates themselves have tractable solutions. Speech recognition experiments serve to suggest ...

Journal: :iranian journal of mathematical chemistry 2016
s.-j. xu q.-h. he s. zhou w. h. chan

let $g$ be a molecular graph with vertex set $v(g)$, $d_g(u, v)$ the topological distance between vertices $u$ and $v$ in $g$. the hosoya polynomial $h(g, x)$ of $g$ is a polynomial $sumlimits_{{u, v}subseteq v(g)}x^{d_g(u, v)}$ in variable $x$. in this paper, we obtain an explicit analytical expression for the expected value of the hosoya polynomial of a random benzenoid chain with $n$ hexagon...

Journal: :AMIA ... Annual Symposium proceedings. AMIA Symposium 2016
Chao Yan You Chen Bo Li David M. Liebovitz Bradley Malin

Heart Failure (HF) is one of the most common indications for readmission to the hospital among elderly patients. This is due to the progressive nature of the disease, as well as its association with complex comorbidities (e.g., anemia, chronic kidney disease, chronic obstructive pulmonary disease, hyper- and hypothyroidism), which contribute to increased morbidity and mortality, as well as a re...

2009
Gustavo Lacerda

It is well-known that the Independent Component Analysis (ICA) model is not identifiable when more than one source is Gaussian (Comon 1993). In this note, we show that the number of continuous degrees of freedom in the " identifiable quotient space " of ICA is max(0, G − 1), where G is the number of Gaussians in the sources. However, since the source distributions are unknown, G is unknown and ...

2004
Darko Mušicki Mark R. Morelande

Gate volume is an integral part of many algorithms for non-parametric target tracking in clutter. Non-parametric target tracking assumes no a-priori knowledge of clutter measurement density. In the simplest case of a single-target single-state target tracking filter employing a Gaussian approximation, the gate is a hyper-ellipsoid whose volume can be calculated analytically. However, in a multi...

Journal: :iranian journal of public health 0
m. nateghpour r.e. howells s.a. ward

penfluridol, a neuroleptic drug, considerably reversed halofantrine resistance in t9.96hf halofantrine resistant strain of plasmodium falicparum (originally chloroquine sensitive parasites), but not in k1hf halofantrine resistant strain (originally chloroquine resistant parasites)

2004
Guido Consonni Luca La Rocca

We propose an objective Bayesian method for the comparison of all Gaussian directed acyclic graphical models defined on a given set of variables. The method, which is based on the notion of fractional Bayes factor, requires a single default (typically improper) prior on the space of unconstrained covariance matrices, together with a prior sample size hyper-parameter, which can be set to its min...

Journal: :The Journal of chemical physics 2015
Alexander I Blair Aristeidis Kroukis Nikitas I Gidopoulos

We revisit the Hartree-Fock (HF) calculation for the uniform electron gas, or jellium model, whose predictions--divergent derivative of the energy dispersion relation and vanishing density of states (DOS) at the Fermi level--are in qualitative disagreement with experimental evidence for simple metals. Currently, this qualitative failure is attributed to the lack of screening in the HF equations...

Journal: :Journal of computational chemistry 2008
Michael J. Gillan Dario Alfè Stefano de Gironcoli Frederick R. Manby

When using quantum chemistry techniques to calculate the energetics of bulk crystals, there is a need to calculate the Hartree-Fock (HF) energy of the crystal at the basis-set limit. We describe a strategy for achieving this, which exploits the fact that the HF energy of crystals can now be calculated using pseudopotentials and plane-wave basis sets, an approach that permits basis-set convergen...

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