City center evaluation method based on mobile phone signaling

A city center evaluation method based on mobile phone signaling comprises three steps of pretreatment, recognition and evaluation. According to OD records, two kinds of city resident behaviors (one is commuting and the other one is life going out) are recognized, and commuting and life going out OD information serves as basis data for recognizing and evaluating two city centers; simple linear regression is adopted, as for a unit j around each target grid unit i in an R range, the distance Dij between the unit j and the unit i is calculated, the visit density value yj at the j is extracted, and univariate linear regression is carried out on the yj and the Dij. As for selection on a proper radius R, with a greedy algorithm as reference, a point which needs to be recognized as a center is determined in advance, searching of the radius R is expanded from a small radius step by step, one recognition result is generated in the case of one time of radius searching, and the best predetermined center recognition effec