Bayesian regression ua haujlwm li cas?
Bayesian regression ua haujlwm li cas?

Video: Bayesian regression ua haujlwm li cas?

Video: Bayesian regression ua haujlwm li cas?
Video: Bayesian Decision Theory - Machine Learning - Spring 2016 - Professor Kogan 2024, Kaum ib hlis
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Hauv Bayesian saib, peb tsim linear regression siv qhov kev faib tawm qhov tshwm sim ntau dua li qhov kwv yees kwv yees. Tus qauv rau Bayesian Tawm Regression nrog cov lus teb ua piv txwv los ntawm ib txwm faib yog : kev, y yog generated los ntawm ib txwm (Gaussian) Distribution characterized by a mean and variance.

Xav txog qhov no, puas yog linear regression Bayesian?

Hauv kev txheeb cais, Bayesian linear regression yog ib txoj kev mus rau linear regression nyob rau hauv uas cov statistical tsom xam yog ua nyob rau hauv lub ntsiab lus teb ntawm Bayesian kev xav.

Tom qab, lo lus nug yog, txoj cai Bayes siv rau dab tsi? Bayes ' theorem , muaj npe tom qab 18th-xyoo pua British mathematician Thomas Bayes , yog ib tug qauv lej rau kev txiav txim siab tej yam tshwm sim. Cov theorem muab ib txoj hauv kev los kho cov kev kwv yees uas twb muaj lawm lossis kev xav (hloov qhov yuav tshwm sim) muab pov thawj tshiab lossis ntxiv pov thawj.

Ib yam li ntawd, koj tuaj yeem nug, tus qauv Bayesian yog dab tsi?

A Bayesian qauv yog ib qho kev txheeb cais qauv qhov twg koj siv qhov tshwm sim los sawv cev rau txhua qhov tsis paub tseeb hauv qhov qauv , ob qho tib si qhov tsis paub meej txog cov zis tab sis kuj tseem tsis paub meej txog cov tswv yim (aka parameters) rau qauv.

Koj txhais li cas regression coefficients?

Ib tug zoo coefficient qhia tau hais tias raws li tus nqi ntawm qhov kev ywj pheej sib txawv nce, qhov nruab nrab ntawm qhov sib txawv ntawm qhov sib txawv kuj tseem nce ntxiv. Ib qho tsis zoo coefficient qhia tias raws li qhov sib txawv ntawm kev ywj pheej nce, qhov sib txawv ntawm qhov sib txawv yuav txo qis.

Pom zoo: