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• W2891970851 abstract "Wearable on body sensors have been employed in many applications including ambulatory monitoring and pervasive computing systems. In this work, a wearable assistant has been created for people suffering from Parkinson’s disease (PD), specifically with the freezing of gait (FoG) symptom. Wearable accelerometers were placed on the person’s body and used for movement measure. When FoG is detected, a rhythmic audio signal was given from the wearable assistant to motivate the wearer to continue walking. Long-term monitoring results in collecting huge amounts of complex raw data; therefore, data analysis becomes impractical or infeasible resulting in the need for data reduction. In the present study, discrete wavelet transform (DWT) has been used to extract the main features inherent in the key movement indicators for FoG detection. The discrimination capacities of these features were assessed using (i) support vector machine using a linear kernel function and (ii) artificial neural network with a two-layer feed-forward with hidden layer of 20 neurons that trained with conjugate gradient back-propagation. Using these two different machine learning techniques, we were capable of detecting FoG with an accuracy of 87.50% and 93.8%, respectively. Additionally, the comparison between the extracted features from DWT coefficients with those using fast Fourier transform established accuracies of 93.8% and 81.3%, respectively. Finally, the discriminative features extracted from DWT yield to a robust multidimensional classification model compared to models in the literature based on a single feature. The work presented paves the way for reliable, real-time wearable sensors to aid people with PD." @default.
• W2891970851 created "2018-09-27" @default.
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• W2891970851 date "2018-09-14" @default.
• W2891970851 modified "2023-09-27" @default.
• W2891970851 title "Discrete wavelet transform-based freezing of gait detection in Parkinson’s disease" @default.
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• W2891970851 doi "https://doi.org/10.1080/0952813x.2018.1519000" @default.
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