To solve the problem of ellipse - object - shape parameters detection in noise image, a new detection algorithm using nonlinear data fitting model and cross-reference iterative method is proposed.

为提高噪声环境下椭圆类物体形状检测算法的稳定性与准确性，本文提出非线性数据拟合模型结合交叉参考迭代的新思路。

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This paper puts forward a seasonal neural network model to curve fitting analysis for nonlinearity and predict for the seasonal time series of outpatient amount.

本文提出一种利用季节性神经网络模型对医院门诊量进行非线性曲线拟合分析和预测。

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This paper presents simulating optimal quality cost by using the ratio of reconstruction cost on divided engineering and curve fitting model, and applies the model in a.

利用分部分项工程返修费率的概念，以线拟合模型模拟最佳质量成本，并将其应用于某施工企业质量成本管理工作。

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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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