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20022009
most citedWhy your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix

881 citations

Showing 2009Show all

23 papers · 1 filter

math.PR2009

Duality on gradient estimates and Wasserstein controls

Kazumasa Kuwada

We establish a duality between L^p-Wasserstein control and L^q-gradient estimate in a general framework. Our result extends a known result for a heat flow on a Riemannian manifold.…

math.PR2009

Non-explosion of diffusion processes on manifolds with time-dependent metric

Kazumasa Kuwada, Robert Philipowski

We study the problem of non-explosion of diffusion processes on a manifold with time-dependent Riemannian metric. In particular we obtain that Brownian motion cannot explode in fin…

astro-ph.HE2009

The Local-Galactic interpretation of the Gamma-Ray Bursts

Wolfgang Kundt

In this talk, I shall update my 16-year old claim that all the (thousands of) observed GRBs - both long and short, repeating or (so far) not - come from the surfaces of Galactic ne…

astro-ph.GA2009

Low-column density HVC and IVC gas in the halo of the Milky Way

N. Ben Bekhti, P. Richter, M. T. Murphy

Recent studies of the circumgalactic gaseous environment of the Milky Way have concentrated on the distribution, chemical composition, and physical properties of the most massive n…

astro-ph.IM20092 cited

Data reduction strategy of the Effelsberg-Bonn HI Survey (EBHIS)

B. Winkel, J. Kerp, P. M. W. Kalberla

Since autumn 2008 a new L-band 7-Feed-Array receiver is used for an HI 21-cm line survey performed with the 100-m Effelsberg telescope. The survey will cover the whole northern hem…

math.ST200944 cited

On the definition, stationary distribution and second order structure of positive semidefinite Ornstein--Uhlenbeck type processes

Christian Pigorsch, Robert Stelzer

Several important properties of positive semidefinite processes of Ornstein--Uhlenbeck type are analysed. It is shown that linear operators of the form $X\mapsto AX+XA^{\mathrm{T}}…