Cov txheej txheem:
- MLE thiab MAP yog dab tsi?
- Dab tsi yog qhov txawv ntawm qhov siab tshaj plaws thiab qhov siab tshaj qhov kev kwv yees tom qab?
- MLE MAP yog dab tsi?
- Puas MAP ib txwm zoo dua MLE?
Video: Puas siab tshaj qhov posteriori?
2024 Tus sau: Taylor Jerome | [email protected]. Kawg hloov kho: 2024-01-11 19:12
Qhov siab tshaj plaws Posteriori lossis MAP luv luv yog Bayesian-raws li txoj hauv kev rau kev kwv yees kev faib tawm thiab cov qauv tsis zoo uas piav qhia cov ntaub ntawv pom zoo… cov ntaub ntawv muab tus qauv hnyav los ntawm qhov tshwm sim ua ntej lossis kev ntseeg txog tus qauv.
MLE thiab MAP yog dab tsi?
Qhov txawv ntawm MLE/MAP thiab Bayesian inference
MLE muab koj tus nqi uas ua kom muaj txiaj ntsig zoo tshaj plaws P(D|θ) Thiab MAP muab koj tus nqi uas maximizes lub posterior probability P(θ|D). … MLE thiab MAP xa rov qab ib qho nqi tas li, tab sis Bayesian inference rov qab qhov muaj peev xwm ceev (lossis loj) muaj nuj nqi.
Dab tsi yog qhov txawv ntawm qhov siab tshaj plaws thiab qhov siab tshaj qhov kev kwv yees tom qab?
Hauv cov mis, p(y|x) yog qhov tshwm sim tom qab; p(x|y) zoo li; p(y) yog qhov ua ntej thiab p(x) yog pov thawj. … Sib piv qhov sib npaug ntawm MAP nrog MLE, peb tuaj yeem pom tias qhov sib txawv tsuas yog MAP suav nrog ua ntej hauv cov qauv, uas txhais tau hais tias qhov yuav luag hnyav los ntawm qhov ua ntej hauv MAP.
MLE MAP yog dab tsi?
Kev kwv yees qhov siab tshaj plaws (MLE) thiab Ntau Tshaj A Posteriori (MAP), yog ob qho tib si rau kev kwv yees qee qhov sib txawv hauv qhov teeb tsa ntawm qhov muaj feem faib lossis cov qauv duab. Lawv zoo sib xws, raws li lawv suav ib qho kev kwv yees, tsis yog kev faib tawm tag nrho.
Puas MAP ib txwm zoo dua MLE?
Piv txwv tias koj muaj cov ntaub ntawv ua ntej raug, MAP yog qhov zoo dua yog tias qhov teeb meem muaj xoom-ib qho poob ntawm qhov kwv yees. Yog tias qhov poob tsis yog xoom-ib qho (thiab hauv ntau qhov teeb meem hauv ntiaj teb nws tsis yog), ces nws tuaj yeem tshwm sim tias MLE ua tiav qhov kev xav tau qis dua.
Pom zoo:
Qhov twg yog qhov zoo tshaj plaws piav qhia lub hom phiaj ntawm qhov kev tshaj tawm ntawm cov lus tshaj tawm no?
Qhov twg yog qhov zoo tshaj plaws piav qhia lub hom phiaj ntawm qhov kev tshaj tawm ntawm cov lus tshaj tawm no? Nws tsim kev tsis txaus siab txog kev tsov rog hauv kev ua si . Qhov twg zoo tshaj plaws piav qhia lub hom phiaj ntawm qhov excerpt Romeo thiab Juliet?
Qhov twg yog qhov tseeb tshaj lossis siab tshaj?
In sum, utmost yog cov lus qhia uas qhia tias ib yam dab tsi yog qhov loj tshaj plaws, tus lej, lossis tus nqi lossis qhov deb tshaj lossis nyob deb tshaj. Upmost yog lub adjective rau conveying hais tias ib yam dab tsi yog nyob rau hauv lub siab tshaj plaws los yog nyob rau hauv lub tseem ceeb tshaj plaws txoj hauj lwm.
Vim li cas acceleration yog xoom thaum tshaj tawm qhov siab tshaj plaws?
Yog li, nws yog ib yam nrog kev tshaj tawm, yog tias qhov tshaj tawm mus txog qhov siab tshaj plaws, ib tus tuaj yeem nqis mus rau qhov chaw ib puag ncig nws, tom qab khaws qhov siab tshaj plaws rau qee lub sijhawm. Tuav qhov nrawm tshaj plaws rau qee lub sijhawm txhais tau hais tias tsis muaj qhov hloov pauv ntawm kev tshaj tawm, yog li ntawd txhais tau tias ib tus muaj xoom acceleration .
Cov kws kho puas siab puas ntsws ua haujlwm hauv tsev kho mob puas siab puas ntsws?
Cov kws kho mob puas siab ntsws soj ntsuam, kuaj xyuas thiab kho cov tib neeg uas muaj kev nyuaj siab thiab mob hlwb. … Cov kws kho mob puas siab puas ntsws feem ntau ua haujlwm hauv tsev kho mob, chaw kho mob hlwb, thiab kev xyaum ua ntiag tug .
Thaum lub siab intra-alveolar siab tshaj atmospheric siab?
Yog li, thaum alveolar siab tshaj atmospheric siab, nws yog qhov zoo; Thaum alveolarpressure qis dua atmospheric siab nws yog qhov tsis zoo. Thaum alveolarpressure tsis zoo, ib yam li cov ntaub ntawv thaum kev tshoov siab, huab cua ntws los ntawm qhov siab dua ntawm lub qhov ncauj hauv lub ntsws mus rau hauv lub siab qis hauv alveoli .