The extracting process is to throw off the useless information and look for the most efficient signal feature to form a pattern feature vectors for classification with mathematics tools.

特征提取的依据是利用有关数学工具，去掉对分类无用的信息，寻找最有效的信号特征来构成用于分类识别的模式特征向量。

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With advances in feature and pattern recognition and other forms of machine intelligence, these video streams will throw off a tremendous amount of structured data, the use of which we will have no knowledge of or control over.

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At launch, the GS4 will be offered in Frost White and Black Mist, and both colors feature a cross-stitching pattern across the front and back.

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As with other pieces of early Japanese pottery, one feature of the Aomori find is the exquisite rope-like pattern pressed into its surface for decoration.

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