Notice of RetractionComprehensive evaluation of Northern China´s economic development level based on principal component analysis method

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Regional economy is a comprehensive economic concept which is forming from the economic development internal factors and external interaction of a certain area. It is restricted by the region´s natural conditions, resources development and utilization, socio-economic conditions and various factors such as economic policy. If we want to improve the living standards and development level of a certain place, we must fully understand the place´s existing economic development situation. In this paper, we analyzed the comprehensive strength of Northern China´s economic situation by using the way of principal component analysis method. Finally we received a order of the Northern 5 regions, as an evidence of developing our country´s balanced regional economy.