Dab tsi yog qhov khoom tsis nco qab?

Cov txheej txheem:

Dab tsi yog qhov khoom tsis nco qab?
Dab tsi yog qhov khoom tsis nco qab?

Video: Dab tsi yog qhov khoom tsis nco qab?

Video: Dab tsi yog qhov khoom tsis nco qab?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
Anonim

Nyob rau hauv qhov tshwm sim thiab kev txheeb cais, kev nco tsis nco yog khoom ntawm qee qhov kev faib tawm qhov tshwm sim. Nws feem ntau yog hais txog cov xwm txheej thaum qhov kev faib tawm ntawm "lub sijhawm tos" kom txog rau thaum qee qhov xwm txheej tsis nyob ntawm seb lub sijhawm tau dhau mus lawm.

khoom tsis nco qab txhais li cas?

Cov cuab yeej tsis nco qab (tseem hu ua cov khoom tsis nco qab) txhais tau tias tias qhov kev faib tawm qhov tshwm sim yog ywj siab ntawm nws keeb kwm… yav tom ntej tsis muaj kev cuam tshuam txog yav dhau los lossis tsis tau tshwm sim.

Dab tsi yog qhov tsis nco qab cov cuab yeej ntawm kev faib tawm exponential?

Kev faib tawm tsis nco qab vim yav dhau los tsis muaj kev cuam tshuam rau nws tus cwj pwm yav tom ntej. Txhua qhov tam sim no zoo li qhov pib ntawm lub sijhawm tshiab random, uas muaj tib qhov kev faib tawm txawm tias lub sijhawm dhau mus npaum li cas.

Koj ua pov thawj Memorylessness li cas?

A geometric random variable X muaj cov khoom tsis nco yog tias rau tag nrho cov lej tsis muaj txiaj ntsig s thiab t, cov kev sib raug zoo hauv qab no tuav. Qhov tshwm sim muaj nuj nqi rau qhov sib txawv geometric random sib txawv X yog f(x)=p(1−p)xQhov tshwm sim uas X ntau dua lossis sib npaug rau x yog P (X≥x)=(1−p)x.

Dab tsi yog qhov tsis nco qab cov cuab yeej ntawm Markov saw?

cov txheej txheem random yog sau los ntawm qhov sib txawv ntawm qhov sib txawv, feem ntau txheeb xyuas lub sijhawm (qhov ntsuas feem ntau sawv cev tsis tu ncua lossis lub sijhawm txuas ntxiv) rau cov txheej txheem random, Markov cov cuab yeej hais tias uas, muab tam sim no, qhov tshwm sim ntawm qhov yav tom ntej yog ywj siab ntawm yav dhau los (cov cuab yeej no tseem hu ua "cov khoom tsis nco")

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