Dab tsi yog tuning parameter?
Dab tsi yog tuning parameter?

Video: Dab tsi yog tuning parameter?

Video: Dab tsi yog tuning parameter?
Video: Kristne Xiong -Yog Vim Dab Tsi (Acoustic Rendition) 2024, Kaum ib hlis
Anonim

A kev ntsuas parameter (λ), qee zaum hu ua kev nplua parameter , tswj lub zog ntawm lub txim txhaum nyob rau hauv ridge regression thiab lasso regression. Nws yog qhov tseem ceeb ntawm qhov shrinkage, qhov twg cov ntaub ntawv muaj nuj nqis yog shrunk mus rau lub hauv paus ntsiab lus, zoo li lub ntsiab lus.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog tus qauv tuning?

Tuning yog tus txheej txheem ntawm maximizing a qauv kev ua tau zoo yam tsis muaj overfitting lossis tsim siab dhau ntawm qhov sib txawv. Hyperparameters tuaj yeem xav tias yog "dial" lossis "knobs" ntawm kev kawm tshuab qauv . Xaiv qhov tsim nyog txheej ntawm hyperparameters yog qhov tseem ceeb rau qauv qhov tseeb, tab sis tuaj yeem suav nrog qhov nyuaj.

Tsis tas li ntawd, qhov txawv ntawm qhov parameter thiab Hyperparameter yog dab tsi? Hauv paus, tsis muaj yog cov uas "qauv" siv los ua kwv yees thiab lwm yam. Piv txwv li, qhov hnyav coefficients hauv a linear regression qauv. Hyperparameters yog cov uas pab txoj kev kawm. Piv txwv li, tus naj npawb ntawm pawg hauv K-Means, shrinkage factor hauv Ridge Regression.

Hauv qhov no, cov qauv ntsuas yog dab tsi?

A qauv parameter yog ib tug configuration variable uas yog nyob rau hauv lub qauv thiab nws tus nqi tuaj yeem kwv yees los ntawm cov ntaub ntawv. Lawv yuav tsum tau los ntawm cov qauv thaum ua kev kwv yees. Lawv muaj nuj nqis txhais cov txuj ci ntawm cov qauv ntawm koj qhov teeb meem. Lawv raug kwv yees los yog kawm los ntawm cov ntaub ntawv.

Parameter optimization yog dab tsi?

Optimization Parameters . Ib optimization parameter (los yog kev txiav txim hloov pauv, hauv cov nqe lus ntawm kev ua kom zoo ) yog model parameter ua optimized . Piv txwv li, tus naj npawb ntawm cov kws saib mob los ua haujlwm thaum sawv ntxov ua haujlwm hauv chav xwm txheej ceev yuav yog ib qho optimization parameter nyob rau hauv ib tug qauv ntawm lub tsev kho mob.

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