但是并联组合预测效果不够理想，有待改进以提高预测效果。
But the parallel combination does not perform well enough, and something should be done to improve prediction performance.
长期记忆性的存在使得有可能通过建立非线性经济计量模型以改进价格预测效果。
The discovery of long memory suggests possibilities of constructing nonlinear econometric models to improve price forecasting performance.
实证结果显示所建立的预警模型有令人满意的预测效果，且行业研究的预测效果也优于整体研究。
The empirical results indicate that the models built up have satisfactory predicting accuracy, and the industry-specific results are more accurate than the overall research.
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