Based on Singular Spectral Analysis (SSA) analysis of global earth surface temperature and solar activity (sunspots), Le Mouël et al. (2020, https://doi.org/10.1029/2019EA000671) suggest that the variability in Earth observed since 1850 is natural controlled by Sun. We cannot agree with their conclusions for several reasons: lack compelling results from Fourier spectra SSA estimates which are p...

Singular spectrum analysis has recently become an attractive tool in a broad range of applications. Its main mechanism of alternating between rank reduction and Hankel projection to produce an approximation to a particular component of the original time series, however, deserves further mathematical justification. One paramount question to ask is how good an approximation that such a straightfo...

Following earlier studies which showed that a sparse coding principle may explain the receptive field properties of complex cells in primary visual cortex, it has been concluded that the same properties may be equally derived from a slowness principle. In contrast to this claim, we here show that slowness and sparsity drive the representations towards substantially different receptive field pro...

BACKGROUND Sessile serrated adenomas/polyps (SSA/P) are now recognised precursors of colorectal cancer (CRC) including cancers harbouring somatic BRAF (V600E) mutations. While the morphological diagnostic criteria of SSA/P have been established, distinguishing between small/early SSA/P and microvesicular hyperplastic polyps (MVHP) is challenging and may not be possible in routine practice. ME...

Brachytherapy to treat prostate cancer uses transrectal ultrasound to guide transperitoneal needle implantation of titanium-shelled radioactive seeds. The standard external dimensions of all seeds used for prostate brachytherapy is 4.5 mm in length and 0.85 mm in diameter. Gland deformation and needle deflection during implantation allow seed-placement errors that cause suboptimal dosimetry. Co...

In hyperspectral images (HSI), most feature extraction and data classification methods rely on corrected dataset, in which the noisy water absorption bands are removed. This can result not only extra working burden but also information loss from removed bands. To tackle these issues, this article, we propose a novel spatial-spectral framework, multiscale 2-D singular spectrum analysis (2-D-SSA)...

Space geodetic time series, be they ground-based or space-based, have increased in length and accuracy. These series can now mined for information on the qualitative dynamics of volcanic systems directly from surface deformation data. Here, we study three volcanoes: Akutan Okmok that are part Aleutian arc, Piton de la Fournaise Reunion Island. All continuously monitored by Global Positioning Sy...

A generalization of the singular spectral analysis (SSA) technique to ill-defined data is introduced in this paper. The proposed algorithm achieves tight estimates of the energy of irregular or aperiodic oscillations from records of interval or fuzzy-valued signals. Fuzzy signals are given a possibilistic interpretation as families of nested confidence intervals. In this context, some types of ...

This article presents the results of the process analysis of the evaluation of the Project NetWork demonstration, a Federal demonstration undertaken by the Social Security Administration (SSA) in 1991 to test alternative methods of providing rehabilitation and employment services to SSA's Disability Insurance beneficiaries and Supplemental Security Income disabled and blind applicants and recip...


 The extraction of circadian cycles from experimental data can be interpreted as a specific case time-series or signal analysis, but chrono- biology and analysis appear to have developed according separate paths. Whereas some techniques such continuous (CWT) discrete wavelet (DWT) are used frequently in rhythmobiology, other specialized methdos digital filters, nonlinear mode decompositio...