نتایج جستجو برای: spectral analysis
تعداد نتایج: 2939201 فیلتر نتایج به سال:
Conventional spectrum estimates of both the smoothedperiodogram and autoregressive variety lack robustness toward outliers in the original data. Outliers and other local perturbations are modeled by non-Gaussian additive noise, which is zero most of the time. Correspondingly, the lack of robustness of the conventional estimates of the spectrum manifest not only inflated variances but also damag...
In neuropsychiatric disorders such as schizophrenia or depression, there is often a disruption in the way that regions of the brain communicate with one another. To facilitate understanding of network-level communication between brain regions, we introduce a novel model of multisite low-frequency neural recordings, such as local field potentials (LFPs) and electroencephalograms (EEGs). The prop...
Spectral kernel methods are techniques for transforming data into a coordinate system that efficiently reveals the geometric structure— in particular, the “connectivity”—of the data. These methods depend on certain tuning parameters. We analyze the dependence of the method on these tuning parameters. We focus on one particular technique—diffusion maps—but our analysis can be used for other meth...
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