投影寻踪模型在地下水水质评价中的应用

通过分析常用水体质量评价模型的缺陷,提出了基于序列二次规划算法的投影寻踪评价模型,并利用多项式插值的方法进行水质分类,取得了符合客观实际的评价结果。某水源地地下水质量评价结果表明:利用投影寻踪方法可以揭示高维数据的结构特征,所建立的评价模型不仅简单、直观和易于理解,而且结果合理,为水源地的保护和合理利用提供了决策依据。

Application of Projection Pursuit Model to Comprehensive Evaluation of Groundwater Quality

The paper analyzes limitations of the traditional models of water quality evaluation,promotes a projection pursuit evaluation model based on sequential quadratic programming algorithms.Classification of water quality is carried out using a polynomial interpolation method and the results are in a good agreement with the practical situations.The results show that the projection pursuit method can disclose the structure features of the high dimensional data.The evaluation model is simple and easy to understand and its result is valid and provides a decision basis for reasonable protection and utilization of well fields.