Video: Dab tsi yog qhov teeb meem regression hauv kev kawm tshuab?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib qho teeb meem regression yog thaum cov zis hloov pauv yog a tiag los yog tus nqi txuas ntxiv, xws li " nyiaj hli "los yog" hnyav". Ntau Cov qauv sib txawv tuaj yeem siv tau, qhov yooj yim tshaj plaws yog linear regression. Nws sim ua kom haum cov ntaub ntawv nrog qhov zoo tshaj plaws hyper-plane uas mus dhau cov ntsiab lus.
Cov lus nug tseem yog, dab tsi yog regression hauv tshuab kev kawm nrog piv txwv?
Regression cov qauv siv los kwv yees tus nqi txuas ntxiv. Kev kwv yees tus nqi ntawm lub tsev muab cov yam ntxwv ntawm lub tsev zoo li qhov loj me, nqe thiab lwm yam yog ib qho ntawm ntau piv txwv ntawm Regression . Nws yog ib txoj kev saib xyuas.
Ib sab saum toj, dab tsi yog qhov teeb meem kev faib tawm hauv kev kawm tshuab? Hauv tshuab kev kawm thiab txheeb cais, kev faib tawm yog cov teeb meem ntawm kev txheeb xyuas qhov twg ntawm pawg (sub-populations) qhov kev soj ntsuam tshiab yog, raws li kev cob qhia cov ntaub ntawv uas muaj cov kev soj ntsuam (lossis cov xwm txheej) uas nws pawg neeg paub.
Tib neeg kuj nug, qhov txawv ntawm kev kawm tshuab thiab kev rov qab yog dab tsi?
Hmoov tsis, muaj qhov zoo sib xws ntawm regression piv txwv tshuab kev kawm xaus. Lub ntsiab qhov sib txawv ntawm lawv yog tias cov zis kuj sib txawv hauv regression yog tus lej (lossis txuas ntxiv) thaum qhov kev faib tawm yog categorical (lossis discrete).
Puas yog kev kawm tshuab tsuas yog regression?
Tawm regression nws yog ib qho algorithm uas yuav siv tau rau hauv tshuab kev kawm . Kev kawm tshuab feem ntau suav nrog ntau qhov kev piav qhia ntxiv (features) dua li cov qauv kev txheeb cais. Tej zaum kaum ob, qee zaum txawm ntau pua ntawm lawv, qee qhov yuav yog qhov sib txawv ntawm ntau qib.
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