问题描述：
句子翻译,句子改写
前文讲了被试者们要perform a forecasting task of a numerical sequence which is generated by ARIMA model.然后：
About one-half of them faced a positive sequence, which contained 20 initial data and 130 separately predicted data generated by ARIMA, based on every twenty data prior to the forecasted period, maximizing R square.
这句话是什么意思?怎样改写呢?
谢谢：）
前文讲了被试者们要perform a forecasting task of a numerical sequence which is generated by ARIMA model.然后：
About one-half of them faced a positive sequence, which contained 20 initial data and 130 separately predicted data generated by ARIMA, based on every twenty data prior to the forecasted period, maximizing R square.
这句话是什么意思?怎样改写呢?
谢谢：）
问题解答：
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