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Projection pursuit (PP) is a type of statistical technique which involves finding the most "interesting" possible projections in multidimensional data. Often, projections which deviate more from a normal distribution are considered to be more interesting. As each projection is found, the data are reduced by removing the component along that projection, and the process is repeated to find new projections; this is the "pursuit" aspect that motivated the technique known as matching pursuit.
Seasonal river pollution control engineering effect evaluation and environmental protection technology popularization service system
The application discloses a seasonal river pollution control engineering effect evaluation and environmental protection technology popularization service system and relates to the technical field of environmental monitoring; the system comprises the following modules: a matter-element extension evaluation module, which determines the comprehensive evaluation grade of the pollution control engineering according to a matter-element correlation matrix; a projection pursuit weak link identification module, which generates an improvement priority sequence by sorting the projection values of each weak link index along the optimal projection direction vector from large to small; and a multi-objective optimization popularization module, which is used for setting candidate environmental protection technologies for each weak link index according to the improvement priority sequence and screening a final environmental protection technology popularization service scheme from a Pareto optimal solution set. The application realizes a complete decision link from quantitative evaluation to accurate positioning of weak links and then to multi-objective balanced optimization of a popularized technology scheme, and overcomes the limitation of traditional methods that can only output a comprehensive evaluation grade and cannot identify specific shortcomings and improvement priorities.
Owner:SHANDONG KELIN TESTING CO LTD +1