The paper applied the information diffusion model of non-parametric estimation to project the level of productivity risks for cereals, rice, corn and wheat at major grain-producing area.

本文采用非参数估计的信息扩散模型测算了我国粮食主产区水稻、玉米、小麦和棉花产量损失风险水平。

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As a sort of medium relying on the content produced by the user, its dissemination of information is mainly reflected in the mode of user diffusion and information dissemination model.

作为依靠用户产生内容的媒介形式其信息的传播影响力主要体现在用户扩散模式和信息传播模式上。

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Finally, the performance of information diffusion yield estimation model was compared with multiple linear regression model and BP neural network model.

然后针对模型的稳定性和精度进行交叉验证，并与多元线性回归模型和BP神经网络模型进行对比。

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