91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

  • 大小: 7KB
    文件類型: .zip
    金幣: 2
    下載: 0 次
    發(fā)布日期: 2021-06-09
  • 語言: 其他
  • 標(biāo)簽: ICA??

資源簡介

ICA程序,利用Infomax算法實現(xiàn),比較實用,建議跳過最優(yōu)成分?jǐn)?shù)估計,直接手動輸入。

資源截圖

代碼片段和文件信息

function?[SAUllinfo]=icaML(XKpardebug_draw)

%?icaML?????:?ICA?by?ML?(Infomax)?with?square?mixing?matrix?and?no?noise.

%

%?function?[SAUllinfo]=icaML(X[K][par])?Independent?component?analysis?(ICA)?using

%???????????????????????????????????????maximum?likelihood?square?mixing?matrix?and?

%???????????????????????????????????????no?noise?[1]?(Infomax).?Source?prior?is?assumed?

%???????????????????????????????????????to?be?p(s)=1/pi*exp(-ln(cosh(s))).?For?optimization

%???????????????????????????????????????the?BFGS?algorithm?is?used?[2].?See?code?for?

%???????????????????????????????????????references.

%???????????????????????????????????????

%???????????????????????????????????????X??:?Mixed?signals

%???????????????????????????????????????K??:?Number?of?source?components.

%???????????????????????????????????????????For?K=0?(default)?number?of?sources?are?equal?to?number?of

%???????????????????????????????????????????observations.

%???????????????????????????????????????????For?K?
%???????????????????????????????????????????dimension.

%???????????????????????????????????????par:??Vector?with?4?elements:

%???????????????????????????????????????????(1)??:??Expected?length?of?initial?step

%???????????????????????????????????????????Stopping?criteria:

%???????????????????????????????????????????(2)??:??Gradient??||g||_inf?<=?par(2)?

%???????????????????????????????????????????(3)??:??Parameter?changes?||dW||_2??<=?par(3)*(par(3)?+?||W||_2)

%???????????????????????????????????????????(4)??:??Maximum?number?of?iterations?

%???????????????????????????????????????????Any?illegal?element?in??opts??is?replaced?by?its

%???????????????????????????????????????????default?value??[1??1e-4*||g(x0)||_inf??1e-8??100]

%???????????????????????????????????????debug_draw?:?Draw?debug?information

%???????????????????????????????????????

%???????????????????????????????????????S??:?Estimated?source?signals?with?variance

%????????????????????????????????????????????scaled?to?one.

%???????????????????????????????????????A??:?Estimated?mixing?matrix

%???????????????????????????????????????U??:?Principal?directions?of?preprocessing?PCA.?
%????????????????????????????????????????????If?K?(the?number?of?sources)?is?equal?to?the?number
%????????????????????????????????????????????of?observations?then?no?PCA?is?performed?and?U=eye(K).??
%???????????????????????????????????????ll?:?Log?likelihood?for?estimated?sources

%???????????????????????????????????????info?:??Performance?information?vector?with?6?elements:

%???????????????????????????????????????????(1:3)??:?final?values?of?[ll??||g||_inf??||dx||_2]?

%???????????????????????????????????????????(4:5)??:?no.?of?iteration?steps?and?evaluations?of?(llg)

%???????????????????????????????????????????(6)????:?1?means?stopped?by?small?gradient

%????????????????????????????????????????????????????2?mea

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????15496??2003-09-09?13:37??MLcorrected\icaML.m
?????文件????????3347??2006-06-22?14:15??MLcorrected\icaML_bic.m
?????文件?????????845??2002-12-18?14:56??MLcorrected\script_demo.m

評論

共有 條評論