本文選題：遞歸圖 + 遞歸定量分析�。� 參考：《西安交通大學(xué)學(xué)報(bào)》2017年10期

【摘要】：為了準(zhǔn)確分辨并識(shí)別不同人體的步態(tài)特征,提出采用遞歸圖和遞歸定量分析的方法,計(jì)算人體步態(tài)非線性時(shí)間序列的復(fù)雜度。首先利用互信息和偽鄰近法分別計(jì)算得到合適的延時(shí)時(shí)間和嵌入維數(shù),根據(jù)相空間重構(gòu)的原理將一維時(shí)間序列擴(kuò)展到高維相空間中,獲得時(shí)間序列在高維空間中鄰近點(diǎn)的分布規(guī)律和運(yùn)動(dòng)特點(diǎn)。構(gòu)建了患有帕金森疾病的老年人、健康老年人和健康年輕人的步態(tài)信號(hào)遞歸圖,可以直觀定性分析和評(píng)估這3組人群的步態(tài)信號(hào)的空間分布程度,其中健康人群最復(fù)雜。采用遞歸定量分析,量化了人體步態(tài)的復(fù)雜度,結(jié)果表明,患有帕金森疾病的人群的步態(tài)復(fù)雜度最小,而且獨(dú)立樣本t檢驗(yàn)顯示了3組人群的復(fù)雜度具有顯著的差異性。該方法簡(jiǎn)單可行,可以準(zhǔn)確地對(duì)不同年齡和帕金森疾病的人群進(jìn)行分類識(shí)別,有利于人體健康監(jiān)測(cè)和診斷研究。
[Abstract]:In order to distinguish and identify the gait features of different human bodies, the method of recursion and recursive quantitative analysis is proposed to calculate the complexity of the human gait nonlinear time series. First, the appropriate time delay time and the embedding dimension are calculated by mutual information and pseudo proximity, and the one dimensional time sequence is based on the principle of phase space reconstruction. The sequence is extended to the high dimensional space, and the distribution and motion characteristics of the adjacent points in the high dimensional space are obtained. The gait signal recursion of the elderly, healthy and healthy young people with Parkinson disease can be analyzed and evaluated directly to analyze and evaluate the spatial distribution of the gait signals of the 3 groups of people. The complex degree of human gait was quantified by recursive quantitative analysis. The results showed that the gait complexity of the people with Parkinson's disease was the least, and the independent sample t test showed that the complexity of the 3 groups was significantly different. This method was simple and feasible, and it could be accurate to different ages and Parkinson's disease. Identifying and classifying sick people is beneficial to the research of human health monitoring and diagnosis.

【作者單位】： 西安交通大學(xué)機(jī)械制造系統(tǒng)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;香港中文大學(xué)機(jī)械與自動(dòng)化工程學(xué)系;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51575426,51611530547) 中央高�；究蒲袠I(yè)務(wù)費(fèi)綜合交叉項(xiàng)目(xjj2016002)
【分類號(hào)】：R318

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1 張瑞紅,金德聞,張濟(jì)川,王人成,馬琳;不同路況下正常步態(tài)特征研究[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年08期

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