总结本论文以上各节所讨论的主要观点，指出本论文的局限性以及需要进一步讨论的问题。
It sums up the main idea and purpose discussed in the above chapters and points out the limitations and questions to be further discussed of this thesis.
本论文针对上述的GM(1,1)模型的局限性，利用BP神经网络算法进行了改进。
In this thesis, the above GM (1, 1) model of the limitations of using BP neural network is improved.
这部分对本论文的研究结果进行了总结，并指出本研究存在的局限性和今后的研究方向。
It consists of the major findings, limitations of the research. A few Suggestions for further study are also given in this part.
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