????????????????????????
???????????? ???????[ 2011/1/19 9:36:36 ] ????????
????????????????????
????4.1 ??????EM???
??????????÷??????????????????????????????
??????????????I?????????????????亯??????????I?????????Pd(I)?? I?d?????????I????????????????????A?????I?й????????????A={R(I)>R??}??R(I)?????????????I???????????????R???????????????????????R?????0??1???????????????????sup{Pd(A)??d??D0}??????D0??D????????????????У?????????????????????????????????1????2???????????
????EM?????????????????????????????????????????????Pd(A)?????????????????????????EM??????????sup{Pd(A)??d??D0}???
????EM??????????裺?
??????f(y|d)??Y????????????????????d??D??????????sup{Pd(A)??d??D0}???????????????????????(t=0??1????)???
????E??????????????d(t)????δ?????????????l(d|Y)=log f(Y|d)?????????????
????M??????????Q(d|d(t))??????????d(t+1)????????????????????????
????4.2 ?????????????????????????
???????????????????????????????????????????????????????????????????????????????????????????????P????m???????????????????????????k?β????????????????????????????????????????????R??(8)???????
????????Rij??????i?????????????е?j?β?????????????????о???k?β??????????????????????????????????????????????????????(9)???
????????(8)??(9)???????????????P????????????(10)???
????????????R={R(c)1??????R(c)m}??????????RP???м??顣?????????????
?????????R?P???????????????????????????????????????????????????????????????????????????????????????????????????????(8)???????????????????????????(11)???
??????????????????????????A={R^p>R??}?????????鷽???????R???????С???????????????????????R??????????(12)??
??????
???·???
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2023/3/23 14:23:39???д?ò??????????
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2021/10/18 15:37:44???????????????
2021/9/17 15:19:29???·???????·
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