采用最小二乘法进行MATLAB编写，开盘为输入，收盘为输出。1-600个数据为训练样本集，601-700为预测样本。先对数据进行标准化处理，再利用最小二乘法对模型进行预测，最后进行反标准化处理后输出。(The least square method is used to compile MATLAB. The opening is input and the closing is output. 1-600 data are training samples and 601-700 predic