Kev Sib Koom Ua Ntej thiab Rov Qab Peb siv lub ntsiab lus sib haum xeeb tsis yog qhov nruab nrab yooj yim vim nws rau txim rau qhov tseem ceeb heev. … Tus qhab nia F1 muab qhov hnyav sib npaug rau ob qho kev ntsuas thiab yog ib qho piv txwv tshwj xeeb ntawm Fβ metric qhov twg β tuaj yeem hloov kho kom muab qhov hnyav ntxiv rau kev rov qab los yog qhov tseeb.
Vim li cas thiaj siv lub ntsiab lus sib haum xeeb?
Qhov kev sib haum xeeb pab nrhiav kev sib txuas lossis sib faib kev sib raug zoo ntawm cov feem ntau yam tsis muaj kev txhawj xeeb txog cov denominators ntau. Harmonic txhais tau hais tias feem ntau siv rau hauv qhov nruab nrab xws li tus nqi (piv txwv li, qhov nruab nrab mus ncig ceev tau muab lub sijhawm ntawm ntau qhov kev mus ncig).
F1 cov qhab nia suav li cas?
Tus qhab nia F1 yog qhov 2((precisionrov qab) / (precision+recall)). Nws tseem hu ua F Score lossis F Measure. Muab lwm txoj hauv kev, qhov qhab nia F1 qhia qhov sib npaug ntawm qhov tseeb thiab qhov rov qab.
Dab tsi yog qhov qhab nia F1 zoo?
Ntawd yog, qhov qhab nia F1 zoo txhais tau hais tias koj muaj qhov tsis zoo uas tsis muaj tseeb thiab tsis muaj qhov tsis zoo, yog li koj tau txheeb xyuas qhov tseeb tiag thiab koj tsis cuam tshuam los ntawm lub tswb cuav. Tus qhab nia F1 suav tias yog zoo meej thaum nws yog 1, thaum tus qauv yog tag nrho tsis ua haujlwm thaum nws yog 0.
F1 qhab nia txhais li cas?
Tus qhab nia F1 yog ntsuas siv los ntsuas qhov zoo ntawm cov teeb meem kev faib tawm binary nrog rau cov teeb meem nrog ntau daim ntawv binary lossis ntau chav kawm. F1-score=1 yog qhov zoo tshaj plawstus nqi (zoo meej precision thiab rov qab), thiab tus nqi phem tshaj yog 0.
