Muaj is tsis muaj nqi tseeb rau MSE. Cias muab, tus nqi qis dua qhov zoo dua thiab 0 txhais tau tias tus qauv zoo meej.
Dab tsi yog qhov lees paub qhov yuam kev square?
Raws li txoj cai ntawm tus ntiv tes xoo, nws tuaj yeem hais tias RMSE qhov tseem ceeb nruab nrab ntawm 0.2 thiab 0.5 qhia tau tias tus qauv tuaj yeem kwv yees cov ntaub ntawv raug. Tsis tas li ntawd, Kho R-squared ntau tshaj 0.75 yog ib qho txiaj ntsig zoo heev rau kev qhia qhov tseeb. Qee qhov xwm txheej, Kho R-squared ntawm 0.4 lossis ntau dua tuaj yeem lees txais.
MSE yog dab tsi?
Tsis muaj kev txwv rau MSE tsuas yog qhov qis dua MSE qhov siab dua qhov tseeb ntawm kev twv ua ntej vim tias yuav muaj qhov sib tw zoo ntawm qhov tseeb thiab kwv yees cov ntaub ntawv. Qhov no yog ua piv txwv los ntawm kev txhim kho kev sib raug zoo raws li MSE mus zero.
Koj txhais MSE li cas hauv linear regression?
Qhov txhais tau tias qhov yuam kev squared (MSE) qhia koj kaw qhov kab rov qab li cas rau cov ntsiab lusNws ua qhov no los ntawm kev coj qhov deb ntawm cov ntsiab lus mus rau kab rov qab (cov kev ncua deb no yog "yuam kev") thiab squaring lawv. Lub squaring yog tsim nyog los tshem tawm tej cim tsis zoo.
R-squared hauv lus Askiv yog dab tsi?
R-squared yog feem pua ntawm cov lus teb hloov pauv hloov pauv uas tau piav qhia los ntawm tus qauv kab. Nws yog ib txwm nyob nruab nrab ntawm 0 thiab 100%. R-squared yog ib qho kev ntsuas ntsuas ntawm qhov kaw cov ntaub ntawv li cas rau cov kab regression haum. … Feem ntau, qhov siab dua R-squared, tus qauv zoo dua haum rau koj cov ntaub ntawv.
