2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Single Exponential Smoothing, SES luv luv, tseem hu ua Simple Exponential Smoothing, yog time series forecasting method rau cov ntaub ntawv univariate yam tsis muaj qhov sib txawv lossis caij nyoog. Nws yuav tsum muaj ib qho parameter, hu ua alpha (a), kuj hu ua qhov smoothing factor lossis smoothing coefficient.
Yuav ua li cas koj txheeb xyuas exponential smoothing?
Kev txhais cov ntsiab lus tseem ceeb rau Ib Leeg Exponential Smoothing
- Kauj Ruam 1: Txiav txim siab seb tus qauv puas haum koj cov ntaub ntawv.
- Kauj Ruam 2: Sib piv qhov haum ntawm koj tus qauv rau lwm tus qauv.
- Kauj Ruam 3: Txiav txim seb qhov kev kwv yees puas yog.
Koj xaiv Alpha li cas rau kev nthuav tawm smoothing?
Peb xaiv tus nqi zoo tshaj rau \alpha yog li tus nqi uas ua rau MSE tsawg tshaj plaws. Cov lej ntawm qhov yuam kev squared (SSE)=208.94. Qhov nruab nrab ntawm qhov yuam kev squared (MSE) yog SSE / 11=19.0. MSE tau rov suav dua rau \alpha=0.5 thiab hloov mus ua 16.29, yog li qhov no peb xav tau qhov \alpha ntawm 0.5.
Thaum twg koj yuav siv exponential smoothing?
Exponential smoothing yog ib txoj hauv kev kom du cov ntaub ntawv rau kev nthuav qhia lossis ua kev kwv yees. Nws feem ntau yog siv rau nyiaj txiag thiab kev lag luam. Yog tias koj muaj lub sijhawm nrog tus qauv meej, koj tuaj yeem siv qhov nruab nrab txav - tab sis yog tias koj tsis muaj tus qauv meej koj tuaj yeem siv exponential smoothing rau kev kwv yees.
Koj suav li cas yooj yim exponential smoothing?
Kev suav suav suav suav suav suav suav suav suav suav nrog: Lub sijhawm tsis ntev los no qhov kev thov tau muab faib ua qhov sib npaug. Lub sij hawm tsis ntev los no qhov kev kwv yees sib npaug los ntawm (ib qho kev rho tawm qhov zoo tshaj plaws). S=qhov zoo tshaj plaws smoothing sawv cev rau hauv daim ntawv zauv teb (yog li 35% yuav sawv cev li 0.35).
Pom zoo:
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Nyob rau hauv qhov kev txiav txim siab yog qhov kev sib tw yog kev tawm tsam kev tawm tsam?
Lub Ntiaj Teb Beat paub txog nws tsis lees paub cov khoom siv thiab cov qauv niaj hnub, kev sim tshuaj, thiab kev ywj pheej ntawm sab ntsuj plig thiab kev sib deev. Nws hloov zuj zus nyob rau xyoo 1960 los ua ib feem ntawm hippie thiab loj dua counterculture txav.
Puas yog nthuav tawm lossis nthuav tawm?
Yog koj hais tias ib tug neeg tab tom nthuav tawm, koj tab tom thuam lawv rau kev sim ua kom neeg nyiam los ntawm kev qhia pom tseeb tias lawv ua tau lossis yam lawv muaj. Yog tias koj nthuav tawm ib yam dab tsi uas koj muaj, koj qhia rau ntau tus neeg lossis ua kom pom tseeb tias koj muaj nws, vim koj txaus siab rau nws.
Leej twg cov tswv yim tau nthuav tawm hauv kev tshaj tawm kev ywj pheej?
Thomas Jefferson siv cov kev xav ua ntej sau los ntawm John Locke thaum sau Daim Ntawv Tshaj Tawm ntawm Kev ywj pheej. Lo lus "lub neej, kev ywj pheej, thiab nrhiav kev zoo siab," yog ib lub tswv yim thawj zaug uas Locke nyob rau hauv nws ob Treatises ntawm tsoom fwv.
Qhov twg yog qhov kev txiav txim siab rau kev tsis lees paub thiab rau kev ua kom muaj kev tawm tsam ntawm kev tawm tsam?
Kev qhuab ntuas tau siv los ntawm cov thawj coj loj hauv cov tub rog Romanrau txim rau cov koom haum lossis pab pawg loj ua txhaum cai, xws li kev ua phem, kev tawm tsam, kev tawm tsam, thiab kev tsis ncaj ncees, thiab rau lub pacification ntawm rebellious legions.
