这里，需要估计源信号的数量，可以通过模型阶数选择(model order selection)来做，PCA是模型阶数选择的预处理。从模型上看，数据模型是过定模型(over-determined)。
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In this paper the description of the ship motion with ar model, the selection of the order of the ar model and the construction of the K steps advanced adaptive predictor are discussed.
本文讨论了船舶在不规则海浪中运动的AR模型描述方法和AR模型阶的选择，并用自适应预报的方法提出了超前k步的自适应预报器。
In the feature selection stage, the computing approximate gains in parallel is adopted in order to solve the computational expensiveness of the model and system spending.
在特征选择阶段，采用计算近似增益的平行算法，解决模型计算量过大和系统开销问题。
View of the current selection of forecasting models in order to minimize the fitting error, a method of selecting forecast model was put forward based on minimum error of forecast.
针对目前以拟合精度作为模型选择标准的方法，提出了以预测值的置信区间最小为标准选择预测模型的方法。
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