Dab tsi yog qhov tseeb hauv kev tsis meej pem matrix?
Dab tsi yog qhov tseeb hauv kev tsis meej pem matrix?

Video: Dab tsi yog qhov tseeb hauv kev tsis meej pem matrix?

Video: Dab tsi yog qhov tseeb hauv kev tsis meej pem matrix?
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A tsis meej pem matrix yog ib tug txheej txheem los xaus qhov kev ua tau zoo ntawm kev faib algorithm. Kev faib tawm raug ib leeg tuaj yeem ua yuam kev yog tias koj muaj qhov tsis sib xws ntawm kev soj ntsuam hauv txhua chav lossis yog tias koj muaj ntau tshaj ob chav kawm hauv koj cov ntaub ntawv.

Ib yam li ntawd, koj yuav nrhiav tau qhov tseeb ntawm qhov tsis meej pem matrix li cas?

Qhov zoo tshaj plaws raug yog 1.0, qhov phem tshaj yog 0.0. Nws kuj tuaj yeem yog xam los ntawm 1 - ERR. Qhov tseeb yog xam raws li tag nrho cov naj npawb ntawm ob qhov kev kwv yees kom raug (TP + TN) muab faib los ntawm tag nrho cov naj npawb ntawm cov ntaub ntawv (P + N).

Ib tug kuj yuav nug, dab tsi yog qhov sib npaug ntawm qhov tsis meej pem matrix? Rau qhov tsis muaj lub sijhawm zoo dua, qhov kuv yuav hu ua "tsis tu ncua" lossis "tag nrho" raug yog xam raws li qhia nyob rau sab laug: qhov feem ntawm cov piv txwv kom raug cais, suav tag nrho plaub hlwb nyob rau hauv lub tsis meej pem matrix . Ntsuas qhov tseeb yog xam raws li qhov nruab nrab ntawm qhov kev faib ua feem raug ntawm txhua chav kawm ib tus zuj zus.

Ua raws li qhov no, qhov tsis meej pem matrix qhia koj li cas?

A tsis meej pem matrix yog ib lub rooj uas feem ntau siv los piav qhia txog kev ua tau zoo ntawm cov qauv kev faib tawm (lossis "classifier") ntawm cov ntaub ntawv xeem uas muaj qhov tseeb. yog paub. Nws tso cai rau pom qhov kev ua tau zoo ntawm ib qho algorithm.

Recall tsis meej pem matrix yog dab tsi?

Visualizing Precision thiab Nco qab Ua ntej yog tus tsis meej pem matrix uas yog pab tau rau kev xam sai precision thiab nco qab muab cov ntawv twv kwv yees los ntawm tus qauv. A tsis meej pem matrix rau kev faib binary qhia txog plaub qhov txiaj ntsig sib txawv: qhov tseeb qhov zoo, qhov tsis zoo, qhov tsis zoo, thiab qhov tsis zoo.

Pom zoo: