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  • ![{w:100}](/wiki/api/attachments.redirect?id=65c653ad-7d50-4277-b55b-4e08f776e373) ![{w:100}](/wiki/api/attachments.redirect?id=71d5cdb7-1bf8-4f01-908f-9e5ec7c37813)读取历史数据里面字段没有close_*0,high_0,open*_0,是close,high,open, ![{w:100}](/wiki/api/attachments.redirect?id=63f7c729-c324-42e3-8c4f-8a185c59656f)现在读取数据最好用DataSource,如下: ![{w:100}](/wiki/api/attachments.redirect?id=10628523-946f-4b6b-96d1-0d72c2590380)你的特征列表中求均值是mean() ![{w:100}](/wiki/api/attachments.redirect?id=e3325a05-2eb9-4107-bc38-0ae56c16e96d) \
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