Ipi Values Of Heart Beats

InterPuls Interval (IPI) is the time difference between two R-R peak of the heartbeat based on mili-second. Current dataset belongs to 4223 subjects and the IPI values are extracted from ECG datasets provided by PhysioNet. The main file IPI-All.txt contains the value of IPIs and each line represents a subject. In the rest of the files <em>n</em>bit.txt.7z, <em>n </em>is the number of bits in converting the IPI values to binary. For instance, if n=2, then after converting the IPI value to binary, only the least two significant bits were inserted in the 2bit.txt.7z.搏动间期（InterPuls Interval, IPI）指基于毫秒计量的心跳两次R波峰值之间的时间差。本数据集涵盖4223名受试者，其搏动间期数值提取自PhysioNet平台提供的心电图（Electrocardiogram, ECG）数据集。主文件IPI-All.txt存储所有搏动间期数值，每行对应一名受试者。其余命名为<em>n</em>bit.txt.7z的文件中，<em>n</em>代表将搏动间期数值转换为二进制时所使用的比特位数。例如，当n=2时，将搏动间期数值转换为二进制后，仅保留最低两位有效比特位并存储至2bit.txt.7z文件中。