Lub ntsiab lus tau muab rau hauv kab lus no yog qhov siv dav tshaj plaws, thiab suav nrog txhua qhov kev faib tawm uas suav nrog lwm cov ntsiab lus, nrog rau cov kev faib khoom xws li cov log-ib txwm muaj uas muaj tag nrho lawv lub sijhawm lub zog, tseem yog qhov feem ntau suav hais tias yog yuav tau heavy-tailed
Puas yog Burr faib hnyav tailed?
daim duab 2a thiab daim duab 2b kuj qhia tias Burr kev faib tawm muaj txoj cai-skewed thiab hnyav-tailedqhov tshwm sim ceev ua haujlwm.
Kev faib tawm twg muaj tus Tsov tus tw hnyav tshaj?
Cov nkhaus xiav yog rau Gamma (3) faib, uas muaj qhov sib txawv. Nws thiaj li cov nkhaus xiav ib txwm dhau ntawm txoj kab liab liab, qhia tias qhov no Gamma faib muaj tus Tsov tus tw hnyav dua qhov kev faib tawm Poisson.
Koj ua li cas thiaj txiav txim siab tias qhov kev faib khoom hnyav hnyav?
Ib qho hnyav tailed faib muaj tus Tsov tus tw hnyav dua li qhov kev faib tawm(Bryson, 1974). Nyob rau hauv lwm yam lus, ib tug faib uas hnyav tailed mus rau xoom qeeb dua ib tug exponential tails; yuav muaj ntau ntau nyob rau hauv qhov nkhaus ntawm PDF.
Puas yog ib txwm faib hnyav tail?
Nyob rau hauv qhov kev faib tawm, "hnyav-tailed" distributions yog cov uas nws tails tsis exponentially bounded Tsis zoo li lub tswb nkhaus nrog "ib txwm faib", hnyav-tailed distributions mus zero ntawm tus nqi qeeb dua thiab tuaj yeem muaj cov txiaj ntsig nrog qhov muaj txiaj ntsig siab heev.
