Returning to fraud detection, imagine a linear regression model with a transaction amount feature.

回到欺诈检测问题，设想一个具有交易金额特征的线性回归模型。

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Meanwhile, a linear regression model and a BP neural network model for predicting the springback quantity were set up.

同时，分别建立了回弹量的线性回归预测模型和BP神经网络预测模型。

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Study laws of distance discriminating results to red and green obstacles change with velocity at different depths distance and establish a linear regression model and BP neural network model.

针对不同空间距离和色调障碍物，建立距离判识结果随速度变化的一元线性回归模型及BP神经网络模型；

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Important cases where the computational definition of R2 can yield negative values, depending on the definition used, arise where the predictions which are being compared to the corresponding outcomes have not been derived from a model-fitting procedure using those data, and where linear regression is conducted without including an intercept.

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