CAJ | 학술논문

背景:脑机接口系统中,对大脑想象的反应速度是衡量脑机接口系统质量的一个重要标准,因此关于脑电信号的分析,对脑电信号特征进行筛选就显得尤为重要,尽可能少的特征来标示相应的动作是提高速度的一个重要途径.目的:利用约简方法对脑电信号特征进行特征筛选,降低脑电特征数目.方法:首先利用不同的脑电特征分析方法,提取特征,并进行分类;其次把连续的脑电信号离散化,利用脑电信号组建脑电信号信息表,最后利用约简理论,对脑电信号进行特征约简,并利用约简特征进行分类,验证分类准确率.结果与结论:利用信息约简的方法及特征标示,把连续的脑电信号特征离散化,利用离散化的脑电信号特征构建信息表,并进行特征筛选,在保证分类准确率的情况下降低了特征的数量.不足之处在于,该方法对分类特征进行标记只能在两类之间进行,对多类型分类特征进行标记和分类特征进行约简将是下一步工作的重点.
배경:뇌궤접구계통중,대대뇌상상적반응속도시형량뇌궤접구계통질량적일개중요표준,인차관우뇌전신호적분석,대뇌전신호특정진행사선취현득우위중요,진가능소적특정래표시상응적동작시제고속도적일개중요도경.목적:이용약간방법대뇌전신호특정진행특정사선,강저뇌전특정수목.방법:수선이용불동적뇌전특정분석방법,제취특정,병진행분류;기차파련속적뇌전신호리산화,이용뇌전신호조건뇌전신호신식표,최후이용약간이론,대뇌전신호진행특정약간,병이용약간특정진행분류,험증분류준학솔.결과여결론:이용신식약간적방법급특정표시,파련속적뇌전신호특정리산화,이용리산화적뇌전신호특정구건신식표,병진행특정사선,재보증분류준학솔적정황하강저료특정적수량.불족지처재우,해방법대분류특정진행표기지능재량류지간진행,대다류형분류특정진행표기화분류특정진행약간장시하일보공작적중점.
BACKGROUND:Reaction velocity for brain imagination is a major criterion in measuring quality of brain computer interface (BCI)system.Therefore,electroencephalogram (EGG) analysis,especially the feature extraction screening,is very important.Reduction the number of features is an important way to improve the speed.OBJECTIVE:To screen EGG features using reduction algorithm,and to decrease the number of EGG features.METHODS:Firstly,by various analytical methods,the EGG features were extracted and classified;then,discreting the continuous EGG to establish an EGG information table;At last,reduction theory was used to reduce EGG features,and to sort the data according to reduced attributes,the accuracy of sorting was validated.RESULTS AND CONCLUSION:Using reduction algorithm and feature marking,discreting the continuous EGG to establish an EGG information table,and then choose the features from the discrete data.The results show that classification accuracy has not been reduced but the number of features was reduced.However,this method can be used marking features in two sorts,how to marking features of multi-sorts and to perform data reduction is a key point in further study.