The studies of the evaluation of the types of urban land quality classification are so far very few.
对城市土地质量分类型评价，迄今研究甚少。
The invention provides a method for service or use according to assigned service quality classification.
本发明提供一种按照规定的服务质量类别提供服务或应用的方法。
Considering the features of acetone refining process, a strategy of neural network based data mining for product quality classification is proposed.
针对丙酮精制过程的特点，提出一种基于神经网络的丙酮产品质量分类挖掘方法。
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