Peb tuaj yeem siv peb qhov ua haujlwm los kwv yees tus nqi ntawm qhov sib txawv ntawm qhov sib txawv rau qhov txawv txav uas nyob sab nraud ntawm peb cov ntaub ntawv. Nyob rau hauv cov ntaub ntawv no, peb tab tom ua extrapolation. Piv txwv li ua ntej cov ntaub ntawv nrog x nruab nrab ntawm 0 thiab 10 yog siv los tsim ib kab regression y=2x + 5.
Vim li cas peb thiaj li siv cov ntawv ntxiv?
Extrapolation yog tus txheej txheem ntawm kev nrhiav tus nqi sab nraum cov ntaub ntawv. Nws tuaj yeem hais tau tias nws pab kwv yees yav tom ntej! … Cov cuab yeej no tsis yog siv tau rau hauv kev txheeb cais nkaus xwb tab sis kuj tseem siv tau rau hauv kev tshawb fawb, kev lag luam, thiab txhua lub sijhawm muaj qhov xav tau los kwv yees tus nqi yav tom ntej tshaj qhov peb tau ntsuas.
Peb tuaj yeem siv qhov twg ntxiv?
Extrapolation yog siv nyob rau hauv ntau qhov kev tshawb fawb, zoo li hauv chemistry thiab engineering qhov twg feem ntau tsim nyog ntxiv. Piv txwv li, yog tias koj paub qhov voltages tam sim no ntawm ib qho system, koj tuaj yeem nthuav tawm cov ntaub ntawv los kwv yees seb lub kaw lus yuav teb li cas rau qhov siab dua.
Thaum twg peb tuaj yeem ntxiv cov ntaub ntawv?
10.7.
Extrapolation tshaj qhov cuam tshuam yog thaum tus nqi ntawm Y raug kwv yees dhau qhov ntau ntawm X data. Yog tias cov ntaub ntawv tsis tau saib xyuas (cov ntaub ntawv sab nraud ntawm qhov ntau ntawm X cov ntaub ntawv) tsis yog linear ces qhov kev kwv yees ntawm Y tuaj yeem cuam tshuam sab nraud ntawm kev ntseeg siab ntawm qhov kwv yees Y tus nqi.
Vim li cas peb thiaj siv extrapolation thiab interpolation?
Interpolation yog siv los kwv yeesQhov tseem ceeb uas muaj nyob rau hauv cov ntaub ntawv teev, thiab extrapolation yog siv los kwv yees qhov tseem ceeb uas poob sab nraum cov ntaub ntawv teev thiab siv paub qhov tseem ceeb los kwv yees tus nqi tsis paub. Feem ntau, interpolation yog txhim khu kev qha ntau tshaj extrapolation, tab sis ob hom kev twv yuav muaj txiaj ntsig rau ntau lub hom phiaj.
