Wharf function adjustment compressive evaluation method based on weighting principal component analysis

Abstract

The invention belongs to the technical field of transportation planning and management, and provides a wharf function adjustment compressive evaluation method based on weighting principal component analysis. The wharf function adjustment compressive evaluation method is used for establishing a wharf functional area adjustment compressive evaluation model, classifying specific evaluation results and providing technical support for port planning adjustment, wharf planning and design adjustment and management control. According to the technical scheme, the wharf function adjustment compressive evaluation method based on weighting principal component analysis comprises the following steps of establishing a wharf function adjustment compressive evaluation index system, determining weights and establishing an evaluation model, wherein weight determination includes the steps of objectively determining the natural characteristics of the weights through a grey relational degree method and determining all the evaluation index weights of wharf function adjustment compressive evaluation, and evaluation model establishment includes the steps that (1) the weights wj (j=1, 2, ..., 26) of all evaluation indexes are determined through the grey relational degree method, and (2) evaluation index original data undergo selection of dimensionless processing threshold values and division of levels. The wharf function adjustment compressive evaluation method based on weighting principal component analysis is mainly applied to transportation planning and management.

Description

technical field [0001] The invention belongs to the technical field of transportation planning and management, and in particular relates to a method for comprehensively evaluating wharf function adjustment by using a weighted principal component analysis method. Background technique [0002] With the rapid development of social economy, the integration of global economy and the continuous improvement of science and technology, many wharves, especially those in the old port area, urgently need to adjust their functions. The reasons are mainly in the following aspects: the development of the city has made the port area the center of the city, seriously affecting the collection and distribution system of the port terminal, and it is urgent to adjust the functional areas of the port terminal; the development of science and technology has made the berthing of the terminal The capacity, shipside loading and unloading capacity and efficiency have been greatly improved, and there is...

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Problems solved by technology

[0008] In order to overcome the deficiencies in the prior art, the present invention aims to use the natural characteristics that the gray correlation degree can objectively determine the weight, the principal component analysis method can establish an objective comprehensive evaluation model and the system analysis target analysis method can establish a comprehensive evaluation index system, The system analysis method is used to establish a comprehensive evaluation index system for the adjustment of terminal functional areas through target decomposition, and the advantages and disadvantages of the comprehensive principal component analysis method and gray correlation degree-principal component analysis method can overcome the information overlap between indicators and the gray correlation degree method can generate and reflect The advantages of the importance difference weights between indicators avoid the disadvantage of determining the mechanical weights generated by the principal component analysis method. The gray correlation degree is used to determine the wharf functional area to adjust the weight of the comprehensive evaluation index, and the principal component analysis method is used to establish the wharf functional area. Adjust the comprehensive evaluation model and grade the specific evaluation results to provide technical support for port planning adjustment, wharf planning and design adjustment and management control

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