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Features
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Features
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Extracted Data description:
Details of Attributes:
1) name: id of the patients.
2) Jitter(%): local Jitter is the average absolute difference between consecutive periods, divided by the average period. It is expressed as a percentage.
3) Jitter(Abs): is the cycle-to-cycle variation of fundamental frequency, i.e. the average absolute difference between consecutive periods.
4) Jitter:RAP: is defined as the Relative Average Perturbation, the average absolute difference between a period and the average of it and its two neighbors, divided by the average period. It is expressed as a percentage.
5) Jitter:PPQ: is the five-point Period Perturbation Quotient, computed as the average of it and its four closest neighbors, divided by the average period. It is also expressed as a percentage
6) Jitter:DDP: Average absolute difference of differences between jitter cycles
7) Shimmer: is defined as the average absolute difference between the amplitudes of consecutive periods, divided by the average amplitude, expressed as a percentage
8) Shimmer(dB): is expressed as the variability of the peak-to-peak amplitude in decibels, i.e. the average absolute base-10 logarithm of the difference between the amplitude of consecutive periods, multiplied by 20
9) Shimmer:APQ3: is the three-point Amplitude Perturbation Quotient, the average absolute difference between the amplitude of a period and the average of amplitudes of its neighbors, divided by the average amplitude. It is expressed in percentage
10) Shimmer:APQ5: is defined as the five-point Amplitude Perturbation Quotient, the average absolute difference between the amplitude of a period and the average of the amplitudes of its four closest neighbors, divided by the average amplitude. It is also expressed in percentage
11) Shimmer:DDA: Average absolute differences between the amplitudes of consecutive periods
12) NHR: Noise-to-harmonics ratio
13) HNR: Harmonics-to-noise ratio
14) RPDE: Recurrence period density entropy (RPDE) is a method for determining the periodicity, or repetitiveness of a signal.
15) DFA: Detrended Fluctuation Analysis is an interesting method for scaling the long-term autocorrelation of non-stationary signals. It quantifies the complexity of signals using the fractal property i.e Signal fractal scaling exponent of detrended fluctuation analysis
16) PPE: Pitch period entropy, pitch period entropy (PPE), a robust measure sensitive to observed changes in speech specific to PD.
17) status: Health status of the subject (one) - Parkinson's, (zero) - healthy