منابع مشابه
Stability of cross-validation and minmax-optimal number of folds
In this paper, we analyze the properties of cross-validation from the perspective of the stability, that is, the difference between the training error and the error of the selected model applied to any other finite sample. In both the i.i.d. and non-i.i.d. cases, we derive the upper bounds of the one-round and average test error, referred to as the one-round/convoluted Rademacher-bounds, to qua...
متن کاملBilateral Choroidal Folds in a Diabetic Patient
Abstract In this presentation, a case of bilateral choroidal folds in patient with diabetic retinopathy was reported. By our knowledge, this case presentation is the first report of choroidal folds in diabetic retinopathy, which bilateral symmetric and horizontal folds arranged in macula. The thick choroid that is developed in diabetics may be a cause of these folds but the source of differenc...
متن کامل(Non)existence of Pleated Folds: How Paper Folds Between Creases
We prove that the pleated hyperbolic paraboloid, a familiar origami model known since 1927, in fact cannot be folded with the standard crease pattern in the standard mathematical model of zero-thickness paper. In contrast, we show that the model can be folded with additional creases, suggesting that real paper “folds” into this model via small such creases. We conjecture that the circular versi...
متن کاملChoroidal Folds in Astronauts.
We read with interest and enthusiasm the recent article by Sibony and colleagues which accurately described the biomechanical etiology of peripapillary wrinkles, retinal folds, and choroidal folds caused by idiopathic intracranial hypertension (IIH). The authors correctly state that chorioretinal folds have been documented in a variety of ophthalmic disorders including the microgravity environm...
متن کاملOn Kummer 3-folds
We investigate a generalization of Kummer construction, as introduced in [AW08]. The aim of this work is to classify 3-dimensional Kummer varieties by computing their Poincaré polynomials.
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1959
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800062397