Dab tsi yog qhov tsim qauv zes?
Dab tsi yog qhov tsim qauv zes?

Video: Dab tsi yog qhov tsim qauv zes?

Video: Dab tsi yog qhov tsim qauv zes?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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A tsim nested (qee zaum hu ua hierarchical tsim ) yog siv rau cov kev sim uas muaj kev txaus siab rau ib txheej ntawm kev kho mob thiab cov kev sim ntsuas tau muab cais tawm.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog ib tug nested kev tshawb fawb tsim?

Nested tsim yog a kev tshawb fawb tsim nyob rau hauv uas theem ntawm ib yam (hais, Factor B) yog hierarchically subsumed nyob rau hauv (los yog ua zes nyob rau hauv) theem ntawm lwm yam (hais, Factor A). Qhov kev txwv no ua rau qhov no tsim ib tsim nested es tsis yog tag nrho hla tsim , thiab cov tsim nested yog denoted li B(A).

Ib yam li ntawd, dab tsi yog qhov cuam tshuam zes? Nested tiv Crossed Nested random teebmeem yog thaum txhua tus tswv cuab ntawm ib pab pawg muaj nyob hauv ib chav tsev ntawm lwm pab pawg. Hla random teebmeem yog thaum no ua zes tsis muaj tseeb. Ib qho piv txwv yuav yog cov noob sib txawv thiab cov teb sib txawv siv rau kev cog qoob loo.

Ntawm no, dab tsi yog ib qho qauv tsim hauv kev txheeb cais?

Ib chav kawm ntawm kev sim tsim nyob rau hauv uas txhua theem ntawm ib qho tseem ceeb tshwm sim nrog tsuas yog ib theem ntawm lwm yam. Yam uas tsis yog ua zes hais tias hla. Yog tias txhua theem ntawm ib qho tshwm sim nrog txhua theem ntawm lwm tus, cov xwm txheej tau hais kom hla tag nrho: yog tias tsis yog, lawv tau hla ib nrab.

Tus qauv nested yog dab tsi?

Muab piv Nested Qauv . Ob qauv yog ua zes yog ib qauv muaj tag nrho cov nqe lus ntawm lwm tus, thiab tsawg kawg yog ib lub sij hawm ntxiv. Qhov loj dua qauv yog tag nrho (los yog tag nrho) qauv , thiab qhov me me yog qhov txo qis (lossis txwv) qauv . Piv txwv li: nrog ob qho kev hloov pauv ywj pheej x1 thiab x2, cov ntsiab lus tau.

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