Results 251 to 260 of about 68,618 (265)
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Two quantitative measures of similarity of one class of waveforms
Computers and Biomedical Research, 1973Abstract The concept of visual similarity of waveforms is discussed. The importance that it plays in the study of complex systems such as those encountered in biomedical research is pointed out, and the importance of automation of these processes is stressed.
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A note on the similarity of certain atmospherics waveforms
Journal of the Franklin Institute, 1951Abstract This note reports a remarkable uniformity observed among waveforms of atmospherics associated with a common center of thunderstorm activity. Photographic results of observations during the day and night are reported. From 104 nighttime waveforms identifiable with a surface cold front extending over the mid-western states, 55 per cent are ...
W.F. Zetrouer, W.J. Kessler
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Structural similarity regularization scheme for multiparameter seismic full waveform inversion
SEG Technical Program Expanded Abstracts 2013, 2013We introduce a new regularization scheme for multiparameter seismic full-waveform inversion (FWI). Using this scheme, we can constrain spatial variations of parameters which are having a weak sensitivity with the one that having a good sensitivity to the measurement, assuming that these parameters have similarities in their structures.
Maokun Li +4 more
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Efficient data retrieval method for similar plasma waveforms in EAST
Fusion Engineering and Design, 2016Abstract Fusion research relies highly on data analysis due to its massive-sized database. In the present work, we propose an efficient method for searching and retrieving similar plasma waveforms in Experimental Advanced Superconducting Tokamak (EAST).
Ying Liu +4 more
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Earthquake Fingerprints: Extracting Waveform Features for Similarity-Based Earthquake Detection
Pure and Applied Geophysics, 2018Seismologists are increasingly adopting data mining and machine learning techniques to detect weak earthquake signals in large seismic data sets. The detection performance of these new methods, especially their sensitivity and false detection rate, depends on the choice of feature representation for waveform data.
Karianne J. Bergen, Gregory C. Beroza
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Source mechanisms inversion using the waveform similarity
84th EAGE Annual Conference & Exhibition, 2023S. Wu, Y. Wang
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Geostatistical inversion method based on seismic waveform similarity
Applied Geophysics, 2023Xue-Bin Ni +6 more
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Methods of comparison and similarity scoring for electrical current waveforms
2017 12th Iberian Conference on Information Systems and Technologies (CISTI), 2017The aim of this study was to identify methods that may be applied in the calculation of similarity between waveforms. Five methods were selected: the Pearson correlation coefficient, the phi coefficient, the Bhattacharyya distance, the Spearman correlation coefficient and the Root Mean Square Deviation.
Marcelo Trindade Rebonatto +2 more
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Extension of frequency-based dissimilarity for retrieving similar plasma waveforms
Fusion Engineering and Design, 2008Some computer-aided assistance in finding the waveforms similar to a waveform has become indispensable for accelerating data analysis in the plasma experiments. For the slowly-varying waveforms and those having time-sectional oscillation patterns, the methods using the Fourier series coefficients of waveforms in calculating the dissimilarity have ...
Teruhisa Hochin +3 more
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Reproducibility and Similarity Measures of Waveform Morphology in Atrial Fibrillation
2009A new method for ECG-based characterization of atrial fibrillation (AF) has been developed which allows comparison of different AF signal patterns for the purpose of identifying differences between patients, leads, hospital visits for the same patient and during treatment.
M. Stridh, D. Husser, A. Bollmann
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