EMPIRICAL STUDY ON THE REGIONAL COOPERATION LEVEL BASED ON NONLINEAR MAPPING ANALYSIS——TAKING SHANDONG PENINSULAR URBAN AGGLOMERATION AND TIANJIN BINHAI NEW AREA AS AN EXAMPLE
用非线性映射方法对山东半岛城市群八市与天津滨海新区的区域合作水平进行聚类分析，发现青岛、东营与滨海新区竞争力高但合作水平低，济南、烟台、威海合作紧密，日照、淄博、潍坊互补性强、合作前景好。
With the rapid economic development of Tianjin Binhai New Area,the regional cooperation in the circle Bohai Sea has been continuously strengthened.As an important component of the circle Bohai Sea economic circle,Shandong Peninsular Urban Agglomeration has the advantages of regional cooperation in multi-position with Binhai New Area,there is an important impact on the two regional cooperation.In this paper, the level of regional cooperation between the eight cities of Shandong Peninsular Urban Agglomeration and Tianjin Binhai New Area is conducted for the cluster analysis by the non-linear mapping method,which provides a new method to quantitative judge of the regional cooperation level.The result showes clearly that Qindao, Dongying with Binhai New Area has high competitiveness and low cooperation level;Jinan,Yantai,Weihai with Binhai New Area has compact cooperation relation;Rizhao,Zibo,Weifang with Binhai New Area has high complementarity and better cooperation prospects.Finally,the paper proposes the development strategy for regional cooperation in accordance with the results of quantitative analysis.