منابع مشابه
Estimation from samples.
Estimation is the process of determining a likely value for a population parameter (eg, the true population mean or proportion) based on a random sample. In practice, a sample is drawn from the target population, and sample statistics (eg, the sample mean or sample proportion) are used to generate estimates of the unknown parameter. The sample should be representative of the population, ideally...
متن کاملSpectrum Estimation from Samples
We consider the problem of approximating the set of eigenvalues of the covariance matrix of a multivariate distribution (equivalently, the problem of approximating the “population spectrum”), given access to samples drawn from the distribution. The eigenvalues of the covariance of a distribution contain basic information about the distribution, including the presence or lack of structure in the...
متن کاملTangent Estimation from Point Samples
Let M be an m-dimensional smooth compact manifold embedded in R, where m is a constant known to us. Suppose that a dense set of points are sampled from M according to a Poisson process with an unknown parameter. Let p be any sample point, let % be the local feature size at p, and let %ε be the distance from p to the (n + 1)th nearest sample point for some n between ( m+1 2 ) + 1 and ( d+1 2 ) ....
متن کاملAutomated IQ Estimation from Writing Samples
The primary focus of this research is to introduce a method of measuring an individual’s IQ by analyzing the vocabulary in said individual’s writing. In this paper, we show that the ratio of SAT words in a dataset of writing samples is roughly normally distributed, though with an obvious left skew. We go on to show a method that can be used to calculate an individual’s IQ with this ratio and pr...
متن کاملMessage-Passing Estimation from Quantized Samples
Recently, relaxed belief propagation and approximate message passing have been extended to apply to problems with general separable output channels rather than only to problems with additive Gaussian noise. We apply these to estimation of signals from quantized samples with minimum mean-squared error. This provides a remarkably effective estimation technique in three settings: an oversampled de...
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ژورنال
عنوان ژورنال: Circulation
سال: 2006
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circulationaha.105.600189