Cross-modality Analysis Using Hurst Analysis
ثبت نشده
چکیده
Methods of assessing the fractal characteristics of time-varying signals like the heart rate, Electroencephalogram, respiratory rate, seismology signal, and so on, which vary apparently irregularly, are random. Hurst (1951) defined an empirical descriptor, the Hurst exponent, of temporal signals describing natural phenomena. This was based on the statistical assessment of the observation of many phenomena. The Hurst exponent H gives a measure of the smoothness of a fractal object, with 0<H<1.
منابع مشابه
Cross-modality Analysis Using Erp Components
In the previous chapter the need for and the importance of crossmodality analysis using the linear ERP method, and nonlinear, fractal methods, such as the DFA and the Hurst exponent were given. The current chapter focuses on the analysis of the EEG using ERP components, and bringing out the parameters for understanding the existence and absence of cross-modal plasticity in blind and normal subj...
متن کاملA Cross-linguistic and Cross-cultural Study of Epistemic Modality Markers in Linguistics Research Articles
Epistemic modality devices are believed to be one of the prominent characteristics of research articles as the commonly used genre among the academic community members. Considering the importance of such devices in producing and comprehending scientific discourse, this study aimed to cross–culturally and cross-linguistically investigate epistemic modality markers as an important subcategory...
متن کاملMultifractal cross-correlation analysis in electricity spot market
In this paper, we investigate the multiscale cross-correlations between electricity price and trading volume in Czech market based on a newly developed algorithm, called Multifractal Cross-Correlation Analysis (MFCCA). The new algorithm is a natural multifractal generalization of the Detrended Cross-Correlation Analysis (DCCA), and is sensitive to cross-correlation structure and free from limit...
متن کاملQuantifying the trend of vegetation changes using remote sensing (Case study: Fars Province)
Investigating the sustainability of vegetation changes is one of the most important issues of vegetation management in the direction of sustainable development. It is necessary to conduct studies in this regard to select appropriate management for greater compatibility with new conditions. In this research, changes in the vegetation dynamics trend of Fars province were studied using the NDVI in...
متن کاملNonlinear Time Series Analysis of Sunspot Data
This paper deals with the analysis of sunspot number time series using the Hurst exponent. We use the rescaled range (R/S) analysis to estimate the Hurst exponent for 259-year and 11 360-year sunspot data. The results show a varying degree of persistence over shorter and longer time scales corresponding to distinct values of the Hurst exponent. We explain the presence of these multiple Hurst ex...
متن کامل