?? maximize_params.m
字號:
function CPD = maximize_params(CPD, temp)% MAXIMIZE_PARAMS Set the params of a hhmmQ node to their ML/MAP values.% CPD = maximize_params(CPD, temperature)Qsz = CPD.Qsizes(CPD.d);Qpsz = prod(CPD.Qsizes(CPD.Qps));if ~isempty(CPD.sub_CPD_start) CPD.sub_CPD_start = maximize_params(CPD.sub_CPD_start, temp); S = struct(CPD.sub_CPD_start); CPD.startprob = myreshape(S.CPT, [Qpsz Qsz]); %CPD.startprob = S.CPT;endif 1 % If we are in a state that can only go the end state, % we will never see a transition to another (non-end) state, % so counts(i,k,j)=0 (and termprob(k,i)=1). % We set counts(i,k,i)=1 in this case. % This will cause remove_hhmm_end_state to return a % stochastic matrix, but otherwise has no effect on EM. counts = get_field(CPD.sub_CPD_trans, 'counts'); counts = reshape(counts, [Qsz Qpsz Qsz]); for k=1:Qpsz for i=1:Qsz if sum(counts(i,k,:))==0 % never witnessed a transition out of i counts(i,k,i)=1; % add self loop %fprintf('CPDQ d=%d i=%d k=%d\n', CPD.d, i, k); end end end CPD.sub_CPD_trans = set_fields(CPD.sub_CPD_trans, 'counts', counts(:)); end CPD.sub_CPD_trans = maximize_params(CPD.sub_CPD_trans, temp);S = struct(CPD.sub_CPD_trans);%CPD.transprob = S.CPT;CPD.transprob = myreshape(S.CPT, [Qsz Qpsz Qsz]);CPD = update_CPT(CPD);
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -