Cov txheej txheem:
Video: Yuav ua li cas koj pom qhov txhais tau tias squared yuam kev?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov kauj ruam dav dav los xam qhov nruab nrab squared yuam kev los ntawm cov khoom vaj khoom tsev ntawm X thiab Y qhov tseem ceeb:
- Nrhiav cov kab regression.
- Ntxig koj cov txiaj ntsig X rau hauv kab rov tav kab sib npaug kom pom qhov tshiab Y qhov tseem ceeb (Y').
- Tshem tawm tus nqi Y tshiab los ntawm qhov qub kom tau txais qhov yuam kev .
- Square lub yuam kev .
- Ntxiv rau yuam kev .
- Nrhiav tus txhais tau tias .
Tsis tas li ntawd, qhov yuam kev squared txhais li cas qhia rau koj?
Hauv kev txheeb cais, cov txhais tau tias squared yuam kev (MSE) lub txhais tau tias squared Kev sib txawv (MSD) ntawm tus kwv yees (ntawm tus txheej txheem rau kwv yees qhov tsis tau pom dua) ntsuas qhov nruab nrab ntawm cov squares ntawm yuam kev - uas yog, qhov nruab nrab squared qhov sib txawv ntawm qhov kwv yees qhov tseem ceeb thiab tus nqi tiag tiag.
Kuj Paub, MSE yog dab tsi nyob rau hauv regression? variance-nyob rau hauv cov nqe lus ntawm linear regression , variance yog ib qho kev ntsuas ntawm qhov deb npaum li cas pom qhov txawv ntawm qhov nruab nrab ntawm qhov kwv yees qhov tseem ceeb, piv txwv li, lawv qhov txawv ntawm qhov ntsuas tus nqi kwv yees. Lub hom phiaj yog kom muaj tus nqi qis. txhais tau tias square yuam kev ( MSE )-yog qhov nruab nrab ntawm cov square ntawm qhov yuam kev.
Kuj kom paub, tus nqi ntawm MSE yog dab tsi?
Khoom txhawb FAQs. Qhov Mean Squared yuam kev ( MSE ) yog ib qho kev ntsuas ntawm txoj kab uas haum rau cov ntaub ntawv kaw. Rau txhua qhov chaw cov ntaub ntawv, koj coj qhov kev ncua deb ntawm qhov taw tes mus rau qhov sib thooj y tus nqi ntawm qhov nkhaus haum (theerror), thiab square tus tus nqi.
Yuav ua li cas koj xam qhov yuam kev squared hauv Python?
Yuav ua li cas xam MSE
- Xam qhov sib txawv ntawm txhua khub ntawm qhov pom thiab kwv yees tus nqi.
- Siv lub square ntawm qhov sib txawv tus nqi.
- Ntxiv txhua qhov sib txawv ntawm qhov sib txawv kom pom cov txiaj ntsig.
- Txhawm rau kom tau txais tus nqi nruab nrab, faib cov txiaj ntsig los ntawm tag nrho cov khoom hauv daim ntawv teev npe.
Pom zoo:
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