jgg     2009 29 (6):  113-117    ISSN: 0412-1961  CN: 21-1139/TG APPLICATION OF OPTIMAL DIMENSION MODELING FOR BP NETWORK IN PREDICTION OF TIME SERIES OF DEFORMATION Peng Xiangguo1，2）;Wang Jian1，2） ;and Sun Lihong1，2） 1）Jiangsu Engineering Key Laboratory of Resource and Environment Information，Xuzhou 2210082）School of Environment and Spatial Informatics，China University of Mining and Technology，Xuzhou 221008 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null