Video: Vim li cas qhov kev kawm ua piv txwv hu ua tub nkeeg kawm?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Piv txwv - raws kev kawm suav nrog cov neeg nyob ze tshaj plaws, qhov hnyav hauv zos regression thiab rooj plaub- raws txoj kev xav. Piv txwv - raws txoj kev yog qee zaum hu ua tub nkeeg kawm txoj kev vim lawv ncua kev mus txog rau ib qho tshiab piv txwv yuav tsum tau muab cais.
Ntxiv mus, txhais li cas los ntawm lo lus piv txwv raws li kev kawm?
Hauv tshuab kev kawm , piv txwv - raws kev kawm (qee zaus hu ua nco- raws kev kawm ) yog tsev neeg kev kawm algorithms uas, es tsis txhob ua kom meej meej generalization, piv cov teeb meem tshiab piv txwv nrog piv txwv pom hauv kev cob qhia, uas tau muab khaws cia rau hauv lub cim xeeb.
Tsis tas li ntawd, tub nkeeg kawm muab piv txwv li cas? Ob yam piv txwv ntawm tub nkeeg kawm yog ua piv txwv kev kawm thiab Tub nkeeg Txoj Cai Bayesian. Tub nkeeg kawm sawv hauv qhov sib piv rau xav kawm nyob rau hauv uas feem ntau ntawm kev xam tshwm sim thaum lub sij hawm kawm.
Tom qab ntawd, ib tug kuj yuav nug, vim li cas KNN hu ua tub nkeeg kawm?
K-NN yog a tub nkeeg kawm vim nws tsis kawm qhov kev ntxub ntxaug los ntawm cov ntaub ntawv kev cob qhia tab sis "memorizes" cov ntaub ntawv kev cob qhia xwb. Piv txwv li, lub logistic regression algorithm kawm nws cov qauv hnyav (tsis) thaum lub sijhawm kawm.
Dab tsi yog tub nkeeg kawm algorithm?
A tub nkeeg kawm algorithm yog ib qho yooj yim algorithm qhov twg algorithm generalizes cov ntaub ntawv tom qab ib tug nug. Qhov piv txwv zoo tshaj rau qhov no yog KNN. K-Neeg Neighbors yeej khaws tag nrho cov ntsiab lus, tom qab ntawd siv cov ntaub ntawv ntawd thaum koj nug rau nws.
Pom zoo:
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