نتایج جستجو برای: singular spectrum analysis ssa

تعداد نتایج: 3042499  

Journal: :STATISTIKA: Journal of Theoretical Statistics and Its Applications 2017

2017
Yan Tang Wee Chung Liew Hong Yan

Each D A microarray experiment generates a large amount of gene expression profiles and it remains a challenge for biologists to robustly identify periodic gene expression profiles with certain noise level in the data. In this paper, we propose a new scheme with noise filtering technique to analyze the periodicity of gene expression base on singular value decomposition (SVD), singular spectrum ...

Journal: :International journal of bioinformatics research and applications 2008
Liping Du Shuanhu Wu Alan Wee-Chung Liew David Keith Smith Hong Yan

We propose a new strategy to analyse the periodicity of gene expression profiles using Singular Spectrum Analysis (SSA) and Autoregressive (AR) model based spectral estimation. By combining the advantages of SSA and AR modelling, more periodic genes are extracted in the Plasmodium falciparum data set, compared with the classical Fourier analysis technique. We are able to identify more gene targ...

2014

5 This paper introduces Singular Spectrum Analysis (SSA) for tourism demand forecasting 6 via an application into total monthly U.S. Tourist arrivals from 1996-2012. The global 7 tourism industry is today, a key driver of foreign exchange inflows to an economy. Here, we 8 compare the forecasting results from SSA with those from ARIMA, Exponential Smoothing 9 (ETS) and Neural Networks (NN). We f...

2012
Vanesa Magar Marc Lefranc Rebecca B. Hoyle Dominic E. Reeve

Local bathymetric, quasi-periodic patterns of oscillation are identified from 26 years of monthly profile surveys taken at two shore-perpendicular transects at Duck, North Carolina, USA. The data cover both the swash and surf zones. Singular Spectrum Analysis (SSA) and Multi-channel Singular Spectrum analysis (MSSA) methods are applied, on the shoreface, to three potential forcings: the monthly...

The record of human brain neural activities, namely electroencephalogram (EEG), is generally known as a non-stationary and nonlinear signal. In many applications, it is useful to divide the EEGs into segments within which the signals can be considered stationary. Combination of empirical mode decomposition (EMD) and Hilbert transform, called Hilbert-Huang transform (HHT), is a new and powerful ...

2014
Donya Rahmani Hossein Hassani

We propose a novel approach for constructing Singular Spectrum Analysis (SSA) forecast based on estimating new coefficients of Linear Recurrent Formula. The results indicate that the proposed method is more reliable in comparison to the widely used approaches that were proposed along with SSA. We conduct simulation studies to compare the relative performance of the new method with the existing ...

2001
Gaohong Wu Zhu Li Feng Luo Piero Antuono Shi-Jiang Li

Filtering ABSTRACT Singular spectrum analysis (SSA) and filtering methods were employed to extract the spontaneous low frequency components from voxel time courses acquired with a single-shot, gradient echo EPI sequence, and determine the functional synchrony in the human hippocampus region in order to distinguish Alzheimer’s disease subjects from age-matched controls. Their performances were e...

2007
N. E. GOLYANDINA

Singular Spectrum Analysis is a nonparametric method, which allows one to solve problems like decomposition of a time series into a sum of interpretable components, extraction of periodic components, noise removal and others. In this paper, the algorithm and theory of the SSA method are extended to analyse two-dimensional arrays (e.g. images). The 2D-SSA algorithm based on the SVD of a Hankel-b...

2015
Alex Shlemov Nina Golyandina David Holloway Alexander Spirov

In recent years, with the development of automated microscopy technologies, the volume and complexity of image data on gene expression have increased tremendously. The only way to analyze quantitatively and comprehensively such biological data is by developing and applying new sophisticated mathematical approaches. Here, we present extensions of 2D singular spectrum analysis (2D-SSA) for applic...

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