wei le ping gu fu za de sui ji wang lu xi tong zhi xiao neng dui yu guan li zhe er yan wang lu ke kao du shi yi xiang jue ding xing de guan jian zhi biao ben yan jiu mu de wei ru he zai you xian de shi jian nei de dao geng jing que de gu ji zhi you yu li yong shu xue jie xi fa ping gu wang lu ke kao du wei yi ge fei que ding xing de duo xiang shi shi jian nan ti NP hard ling yi ge ke xing de ti dai fang an ji shi li yong dian nao mo ni gu ji xi tong ke kao du zai gao ke kao du wang lu xia chuan tong meng di qia luo fa xu yao hen da de chou yang cheng ben yi de dao jing que de gu ji zhi yin ci zai bu zeng jia chou yang cheng ben de qing kuang xia shi yong bian yi shu suo jian ji shu jiang di gu ji liang de bian yi cheng du shi bi xu de Cancela H and Khadiri M E zai 2003 nian ti chu jie he chuan lian bing lian hua jian yu di hui bian yi shu suo jian ji shu bi mian rong yu de zhong fu ji suan ben yan jiu ti chu yi ge che di de fen ceng chou yang ji hua yi ti gao bian yi shu suo jian cheng du shi yan jie guo xian shi ben yan jiu ti chu de fang fa sheng guo xian cun de chou yang fang fa
