Vim li cas vectors siv hauv tshuab kev kawm?
Vim li cas vectors siv hauv tshuab kev kawm?

Video: Vim li cas vectors siv hauv tshuab kev kawm?

Video: Vim li cas vectors siv hauv tshuab kev kawm?
Video: Mob nrob qaum/ Mob duav yog vim li cas? 2024, Kaum ib hlis
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Hauv tshuab kev kawm , feature siv vectors los sawv cev tus lej lossis cov cim cim, hu ua cov yam ntxwv, ntawm ib qho khoom hauv lej, yooj yim analyzable txoj kev. Lawv yog ib qho tseem ceeb rau ntau qhov sib txawv ntawm tshuab kev kawm thiab kev ua qauv.

Yog li ntawd, dab tsi yog vector hauv tshuab kev kawm?

Vector , ua in Machine Learning orLinear Algebra hais txog tib yam - kev sau / array ntawm cov lej- piv txwv: [1, 3, 2] yog ib qho vector . Hauv tshuab kev kawm qhov no vector hu ua feature vector Raws li txhua qhov txiaj ntsig sib raug rau qee qhov nta, hais cov yam ntxwv ntawm cov txiv hmab txiv ntoo hauv qhov teeb meem kev faib cov txiv hmab txiv ntoo.

Tsis tas li ntawd, vim li cas Linear Algebra tseem ceeb rau kev kawm tshuab? Matrix factorization yog ib qho cuab yeej tseem ceeb hauv linearalgebra thiab siv dav raws li lub hauv paus ntawm ntau txoj haujlwm nyuaj hauv ob qho tib si linear algebra (xws li cov matrix inverse) thiab tshuab kev kawm (tsawg squares). Txhawm rau nyeem thiab txhais lus siab dua matrix kev khiav hauj lwm, koj yuav tsum to taub matrix factorization.

Kuj kom paub, dab tsi yog vector hauv ML?

Vim li cas matrices nrog qhov ntev Nx1 hu ua cov duab Yog tias koj tau kawm qib kawm qib siab physics orengineering, tej zaum koj yuav xav txog cov duab raws li ib yam dab tsi uas muaj ob qhov loj thiab kev taw qhia qhov twg qhov ntev ntawm qhov vector yog qhov magnitude thiab orientation ntawm lub vector yog kev taw qhia.

Dab tsi yog qhov tshwj xeeb hauv kev kawm tshuab?

Hauv tshuab kev kawm thiab qauv paub, a feature yog ib tug neeg ntsuas cov cuab yeej orcharacteristic ntawm ib tug phenomenon raug soj ntsuam. Lub tswvyim ntawm " feature " yog hais txog qhov kev piav qhia sib txawv siv cov txheej txheem instatistical xws li linear regression.

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