Cov txheej txheem:

Yuav ua li cas koj pom qhov tshwm sim?
Yuav ua li cas koj pom qhov tshwm sim?

Video: Yuav ua li cas koj pom qhov tshwm sim?

Video: Yuav ua li cas koj pom qhov tshwm sim?
Video: Zaj Dub - Cas Tsis Xaiv Koj_Nkauj Tawm Tshiab [Official MV] 2024, Kaum ib hlis
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Qhov yuav tshwm sim

  1. P(A) hais txog qhov qhov tshwm sim qhov xwm txheej A yuav tshwm sim.
  2. P(A|B) yog hais txog qhov xwm txheej qhov tshwm sim qhov xwm txheej A tshwm sim, muab qhov xwm txheej B tau tshwm sim.
  3. P(A') hais txog tus qhov tshwm sim ntawm qhov ntxiv ntawm qhov xwm txheej A.
  4. P (A ∩ B)
  5. P (A ∪ B)
  6. E(X) yog hais txog tus nqi xav tau ntawm qhov sib txawv ntawm X.

Hais txog qhov no, cov cim tshwm sim txhais li cas?

Lus txhais thiab Lus cim Qhov xwm txheej qhov tshwm sim ntawm qhov xwm txheej A, muab qhov xwm txheej B, yog qhia los ntawm cim P(A|B). Qhov sib ntxiv ntawm ib qho kev tshwm sim yog qhov xwm txheej tsis tshwm sim. Cov qhov tshwm sim qhov xwm txheej A yuav tsis tshwm sim yog qhia los ntawm P(A'). Cov qhov tshwm sim ntawm qhov kev sib tshuam ntawm Cov Txheej Txheem A thiab B yog qhia los ntawm P (A ∩ B).

Ib tug kuj yuav nug, dab tsi yog lub cim rau txhais tau tias? Cov ntawv sau rau "tus" txhais tau tias ntawm cov txheej txheem muaj nuj nqis suav nrog macron sau ntawv los yog. Tus nqi cia siab sau ntawv . yog qee zaum kuj siv. Cov txhais tau tias ntawm ib daim ntawv teev cov ntaub ntawv (piv txwv li, tus qauv txhais tau tias ) yog siv raws li Txhais tau tias [list]. Feem ntau, a txhais tau tias yog homogeneous muaj nuj nqi uas muaj cov cuab yeej uas a txhais tau tias ntawm ib pawg ntawm cov lej txaus siab.

Ntawm no, U txhais li cas hauv qhov tshwm sim?

U (a, b) uniform distribution. sib npaug qhov tshwm sim nyob rau hauv lub a, b.

∩ txhais li cas?

Kev txhais ntawm Kev sib tshuam ntawm Sets: Kev sib tshuam ntawm ob qhov muab teev yog qhov loj tshaj plaws uas muaj tag nrho cov ntsiab lus uas muaj rau ob qho tib si. Lub cim rau denoting kev sib tshuam ntawm sets ' ∩ '.

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