1、最大后最大后悔值悔值pi2321最小损失最小损失（乐观）（乐观）2301a4NBASupport|ABAConfidence2022年7月23日17时06分决策理论与方法-智能决策理论与方法TID Items100 1 3 4200 2 3 5300 1 2 3 5400 2 5itemset sup.1223334153itemset sup.12233353itemset1 21 31 52 32 53 5itemset sup1 211 321 512 322 533 52itemset sup1 322 322 533 52itemset2 3 5itemset sup2 3 5220
2、22年7月23日17时06分决策理论与方法-智能决策理论与方法,11,1;,KNji jii jijxuCuN1/1|ndnijiljllDxxxixjcos|Tijijijx xSxxxixjO 1()()TijijijDxxSxx12211()()()()dilijljlijddilijljllxxxxrxxxx1,.,|()()|min|()|()|irjrirjNirjrj ixxxxDxxxxxixjxr110011001001()ijnnSnnw nn11111001()ijnSnw nn11dijijllSSd0,1ijlijSij与 不匹配，与 匹配11()/()ddijijl
3、ijlijlllSS111111jNiijiNNNjNNSSSSSSSSSSK-meansK-means算法：基于几何中心算法：基于几何中心kixGcardxmilGxlmimi,2,1,)(1)()()1(K-meansK-means算法示例算法示例随机选择的起始页面随机选择的起始页面d=0.85随机选择的起始页面随机选择的起始页面qd=0.850XxaAaVV YXxUxXRXYRUYR)()/(:YXxUxXRXYRUYR)()/(:XRXPOSR)(XRUXNegR)(粗糙集X粗糙集X)()()()(XXRCardXRCardXR)(1)(XXRRCardUXRCardFniiR1)(
4、niiniiRXRCardXRCardF11)(XBDPOSDUXB/)(DUCU/)()()(UCardDPOSCardDkCC)()(1)()()()(),(DDDDDBCBCCBCCDC/()()()X U DBCardB XkDCard U)()(1)()()()(),(DDDDDBCBCCBCCDC叶结点叶结点)log()log(),(NPNNPNNPPNPPNPIkjjjjjNPINPNPAE1),()()()()(ASplitiAGainAgainratiokjjjjjnNPnNPASpliti1)log()(xxxxxf|)(xxxf11)(xxxeexforexf11)(11
5、)(012345678910-0.500.511.522.533.54012345678910-0.500.511.522.533.540510152025303540455010-310-210-110010110250 EpochsTraining-BluePerformance is 0.00225488,Goal is 0dxdyyxpyxffR),()()(11()()lempiiiRff xyl)()(limfRfRempl)(min()(min(limfRfRempl2(ln(1)ln)4()()emplhhR fRflwwbwxwbwxdTiii|1)(.21minbwxytswwiiTdixxxxK)1(),(21)/exp(),(2221ixxxxK)(tanh(),(2121kxxkxxKi
