Based on the analysis of the impact factors of port multimodal transport node,the paper uses the improved fuzzy c-algorithm,turns Single-objective problem into Multi,adds a secondary objective of the membership function,and studies the layout of ports\' multimodal transport nodes.

In this paper, the values of records in database are divided into many linguistic values by fuzzy c-means algorithm, and linguistic values are adopted to soften the domain partition boundary of the quantitative attributes so that a series of linguistic valued association rules are generated.

To improve the convergence rate of the scalar quantization for analog source,the fuzzy c-mean algorithm(FCM) in fuzzy logic was applied to the scalar quantization of analog source through some alteration.