TY - GEN
T1 - Nonstationarity detection
T2 - 1st International Congress on Image and Signal Processing, CISP 2008
AU - Kiremire, Bunty B.E.
AU - Marwala, Tshilidzi
PY - 2008
Y1 - 2008
N2 - This paper proposes the Stationarity Index, a measure of the similarities of the auto correlation integral of a section of a time series and the cross correlation of that section with others of the same time series. This measure of similarity is a measure of the stationarity of the time series and therefore can be used not only to detect nonstationarity but to also quantify it. The index is then successfully used in the analysis of electrocardiogram (ECG) and electroencephalogram (EEG) profiles to identify the changes in the dynamics of the signals as well as the occurrence of various events. The index displays sensitivity to changes in the dynamics exhibited in ECG signals that are the result of partial epileptic seizures, with the index going high in response to the changes in the dynamics.
AB - This paper proposes the Stationarity Index, a measure of the similarities of the auto correlation integral of a section of a time series and the cross correlation of that section with others of the same time series. This measure of similarity is a measure of the stationarity of the time series and therefore can be used not only to detect nonstationarity but to also quantify it. The index is then successfully used in the analysis of electrocardiogram (ECG) and electroencephalogram (EEG) profiles to identify the changes in the dynamics of the signals as well as the occurrence of various events. The index displays sensitivity to changes in the dynamics exhibited in ECG signals that are the result of partial epileptic seizures, with the index going high in response to the changes in the dynamics.
UR - http://www.scopus.com/inward/record.url?scp=51849109870&partnerID=8YFLogxK
U2 - 10.1109/CISP.2008.779
DO - 10.1109/CISP.2008.779
M3 - Conference contribution
AN - SCOPUS:51849109870
SN - 9780769531199
T3 - Proceedings - 1st International Congress on Image and Signal Processing, CISP 2008
SP - 373
EP - 378
BT - Proceedings - 1st International Congress on Image and Signal Processing, CISP 2008
Y2 - 27 May 2008 through 30 May 2008
ER -