Video: Dab tsi yog nonlinear regression siv rau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nonlinear regression yog ib daim ntawv ntawm regression tsom xam nyob rau hauv uas cov ntaub ntawv yog haum rau ib tug qauv thiab ces qhia raws li ib tug lej muaj nuj nqi. Nonlinear regression siv logarithmic functions, trigonometric functions, exponential functions, zog zog, Lorenz nkhaus, Gaussian zog, thiab lwm yam haum txoj kev.
Ua raws li qhov no hauv kev txiav txim siab, dab tsi yog qhov kev ntsuam xyuas nonlinear regression?
Hauv kev txheeb cais, nonlinear regression yog ib daim ntawv ntawm tsom xam regression nyob rau hauv uas soj ntsuam cov ntaub ntawv yog qauv los ntawm ib tug muaj nuj nqi uas yog a nonlinear kev sib xyaw ntawm cov qauv parameters thiab nyob ntawm ib los yog ntau dua kev ywj pheej variables. Cov ntaub ntawv yog haum los ntawm a txoj kev ntawm successive approximations.
Ib sab saum toj no, peb puas tuaj yeem ua regression ntawm cov ntaub ntawv tsis yog kab? Nonlinear regression tuaj yeem haum ntau ntau hom nkhaus, tab sis nws ua tau yuav tsum tau siv zog ntau dua los nrhiav qhov zoo tshaj plaws haum thiab rau txhais lub luag hauj lwm ntawm lub ywj pheej variables. Tsis tas li ntawd, R-squared tsis siv tau rau nonlinear regression , thiab nws yog tsis yooj yim sua xam p-tus nqi rau kev kwv yees parameter.
Yog li ntawd, dab tsi yog linear thiab nonlinear regression?
Ntau tus neeg xav tias qhov sib txawv ntawm linear thiab nonlinear regression yog tias linear regression suav nrog kab thiab nonlinear regression suav nrog nkhaus. linear regression siv a kab tawm Kev sib npaug hauv ib daim ntawv yooj yim, Y = a + bx, qhov twg x yog qhov sib txawv thiab Y yog qhov sib txawv: Y = a0 + b1X1.
Puas yog regression ib txwm linear?
Linear Regression Equations Tab sis qhov ntawd txhais li cas tiag? Hauv kev txheeb cais, a regression equation (los yog function) yog kab tawm thaum nws yog kab tawm nyob rau hauv parameters. Thaum qhov sib npaug yuav tsum kab tawm nyob rau hauv parameters, koj muaj peev xwm hloov lub predator variables nyob rau hauv txoj kev uas tsim curvature.
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