Support vector machine for classification of walking conditions using miniature kinematic sensors.
A portable gait analysis and activity-monitoring system for the evaluation of activities of daily life could facilitate clinical and research studies. This current study developed a small sensor unit comprising an accelerometer and a gyroscope in order to detect shank and foot segment motion and ori...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 46; no. 6; pp. 563 - 574 |
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| Autores principales: | , , , , , |
| Formato: | clinical trial research Journal Article |
| Publicado: |
Springer Nature
Jun2008
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105664416&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105664416 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Jun2008 vid: 46 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105664416 NLM18347832 2009929041 10.1007/s11517-008-0327-x NLM18347832 105664416 ppf: 563 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Support vector machine for classification of walking conditions using miniature kinematic sensors. aug: au: Lau HY Tong KY Zhu H Lau, Hong-Yin Tong, Kai-Yu Zhu, Hailong affil: Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong SAR, China sug: subj: Activities of Daily Living Artificial Intelligence Walking Physiology Adult Biomechanics Clinical Trials Male Movement Physiology Neural Networks (Computer) Human Adult: 19-44 years Male ab: A portable gait analysis and activity-monitoring system for the evaluation of activities of daily life could facilitate clinical and research studies. This current study developed a small sensor unit comprising an accelerometer and a gyroscope in order to detect shank and foot segment motion and orientation during different walking conditions. The kinematic data obtained in the pre-swing phase were used to classify five walking conditions: stair ascent, stair descent, level ground, upslope and downslope. The kinematic data consisted of anterior-posterior acceleration and angular velocity measured from the shank and foot segments. A machine learning technique known as support vector machine (SVM) was applied to classify the walking conditions. SVM was also compared with other machine learning methods such as artificial neural network (ANN), radial basis function network (RBF) and Bayesian belief network (BBN). The SVM technique was shown to have a higher performance in classification than the other three methods. The results using SVM showed that stair ascent and stair descent could be distinguished from each other and from the other walking conditions with 100% accuracy by using a single sensor unit attached to the shank segment. For classification results in the five walking conditions, performance improved from 78% using the kinematic signals from the shank sensor unit to 84% by adding signals from the foot sensor unit. The SVM technique with the portable kinematic sensor unit could automatically recognize the walking condition for quantitative analysis of the activity pattern. pubtype: Academic Journal doctype: clinical trial research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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