Thawj zaug nco ntsoov tias lub sijhawm kawg thib ob tsis suav tias yog lub ntsiab lus ntawm qhov muaj zog nyob ruaj khov, yog li, muaj zog ruaj khov tsis tas txhais tau tias tsis muaj zog nyob ruaj khov.
Puas muaj zog nyob ruaj khov txhais tau tias tsis muaj zog nyob ruaj khov?
Yog vim li cas muaj zog nyob ruaj khov tsis txhais tau tias tsis muaj zog nyob ruaj khov yog tias nws tsis txhais tau tias cov txheej txheem yuav tsum muaj sijhawm kawg thib ob; e.g. tus txheej txheem IID nrog tus qauv Cauchy faib yog nruj me ntsis tab sis tsis muaj lub sijhawm thib ob ⁴ (saib [Myers, 1989]).
Yuav ua li cas koj thiaj paub tias qhov chaw nres tsheb tsis muaj zog?
Tej zaum txoj hauv kev yooj yim tshaj plaws los kuaj xyuas qhov chaw nyob yog faib koj lub sijhawm tag nrho rau hauv 2, 4, lossis 10 (hais N) ntu (qhov ntau qhov zoo dua), thiab suav qhov nruab nrab thiab qhov sib txawv ntawm txhua ntu. Yog tias muaj qhov pom tseeb ntawm qhov nruab nrab lossis qhov sib txawv ntawm N ntu, ces koj cov koob yuav tsis nyob ruaj khov.
Tus txheej txheem tsis muaj zog nyob ruaj khov yog dab tsi?
Ib txheej txheem random hu ua qaug zog-sensitive nyob ruaj ruaj lossis dav-sensitive nyob ruaj ruaj (WSS) yog tias nws txhais tau tias muaj nuj nqi thiab nws txoj kev sib raug zoo tsis hloov pauv raws sijhawm.
Puas yog cov txheej txheem suab nrov dawb tseem tsis muaj zog nyob ruaj khov?
Lub suab nrov yog piv txwv yooj yim tshaj plaws ntawm cov txheej txheem nyob ruaj khov. Ib qho piv txwv ntawm cov txheej txheem discrete-lub sij hawm nyob ruaj ruaj qhov twg cov qauv qhov chaw kuj yog discrete (kom qhov sib txawv ntawm qhov sib txawv yuavcoj ib qho ntawm N tau qhov tseem ceeb) yog Bernoulli scheme.
