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Nonparametric, tuning-free estimation of S-shaped functions
We consider the nonparametric estimation of an S-shaped regression function. The least squares estimator provides a very natural, tuning-free approach, but results in a non-convex optimisation problem, since the inflection point...
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A web-database of mammalian morphology and a reanalysis of placental phylogeny
RJ Asher
Jun 13, 2011
Background: Recent publications concerning the interordinal phylogeny of placental mammals have converged on a common signal, consisting of four major radiations with some ambiguity regarding the placental root. The DNA data...
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The Authenticity of Demosthenes 13, Again
RJ Sing
Mar 07, 2017
The deliberative speech known by us as On Organization (Περὶ συντάξεως) focusses on financial organization and political economy more than any other speech in the Demosthenic corpus. The assembly is to decide the fate of an...
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Atomoxetine and citalopram alter brain network organization in Parkinson's disease.
Parkinson's disease has multiple detrimental effects on motor and cognitive systems in the brain. In contrast to motor deficits, cognitive impairments in Parkinson's disease are usually not ameliorated, and can even be worsened...
P2Y12 inhibitors for the neurointerventionalist.
The use of antiplatelets is widespread in clinical practice. However, for neurointerventional procedures, protocols for antiplatelet use are scarce and practice varies between individuals and institutions. This is further...
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High-dimensional change point estimation via sparse projection
T Wang, RJ Samworth
Jul 13, 2017
Changepoints are a very common feature of Big Data that arrive in the form of a data stream. In this paper, we study high-dimensional time series in which, at certain time points, the mean structure changes in a sparse subset...
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Calibration of an orientation sensor for freehand 3D ultrasound and its use in a hybrid acquisition system
BACKGROUND: Freehand 3D ultrasound is a powerful imaging modality with many potential applications. However, its reliance on add-on position sensors, which can be expensive, obtrusive and difficult to calibrate, is a major...
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