Qhov ntau ntawm RMSE yog dab tsi?
Qhov ntau ntawm RMSE yog dab tsi?

Video: Qhov ntau ntawm RMSE yog dab tsi?

Video: Qhov ntau ntawm RMSE yog dab tsi?
Video: Thov Txim Qhov Kuv Txav Deb Ntawm Koj (Official Music Video 2022) N. Vajxob Xyooj & N. Vanxay lauj 2024, Kaum ib hlis
Anonim

Rau ib tug datum uas ranges ntawm 0 rau 1000 , RMSEof 0.7 yog me me, tab sis yog tias qhov ntau ntawm 0 mus rau 1, nws tsis yog qhov me ntxiv lawm. Txawm li cas los xij, txawm tias qhov me me ntawm RMSE, qhov zoo dua, koj tuaj yeem ua qhov kev thov theoretical ntawm qib ntawm RMSE los ntawm kev paub txog dab tsi xav tau los ntawm koj DV hauv koj qhov kev tshawb fawb.

Ua li no, tus nqi RMSE txhais li cas?

RMSE . Cov RMSE yog square root ntawm qhov sib txawv ntawm cov residuals. Nws qhia txog qhov haum ntawm themodel rau cov ntaub ntawv-yuav ua li cas kaw cov ntsiab lus pom cov ntaub ntawv yog tothe tus qauv kwv yees tus nqi . Thaum R-squared yog qhov ntsuas kev sib haum xeeb, RMSE yog ib qho kev ntsuas qhov tseeb.

Ib yam li ntawd, RMSE puas tuaj yeem ua qhov tsis zoo? Koj yuam kev lawm. MSE ua tau yeej tsis yog tsis zoo , vim tias nws qhov kev xav tau ntawm qhov tsis muaj- tsis zoo random variable (thiab yog li tsis yog- tsis zoo nws tus kheej).

Kuj kom paub yog, dab tsi yog cov units ntawm RMSE?

Cov Unit ntawm Root Mean Square yuam kev ( RMSE )

Puas yog RMSE zoo ib yam li tus qauv sib txawv?

Txuj kev sib txawv yog siv los ntsuas qhov kis ntawm cov ntaub ntawv nyob ib ncig ntawm lub ntsiab lus, thaum RMSE yog siv los ntsuas qhov sib txawv ntawm qee qhov tseem ceeb thiab kev kwv yees rau cov nqi ntawd. RMSE feem ntau yog siv los ntsuas qhov yuam kev ntawm kev kwv yees, piv txwv li ntau npaum li cas qhov kev twv koj tau ua txawv ntawm cov ntaub ntawv kwv yees.

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