尝试在weka中加载csv文件时收到此消息。
下面是几行字
Random,Session,Id,Indication,Diabetes,IHD,Hypertension,Arrhythmia,History,IPSI,Contra,Risk,
0.621988609,1265,138389,CVA,no,null,no,no,no,99,30,Low,
0.361080211,96760,78604,A-F,no,yes,no,no,no,76,60,Low,
0.998628378,2263,169741,CVA,no,yes,yes,no,no,85,15,Low,
0.302084892