2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
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).
Xav txog qhov no, dab tsi yog qhov tsim qauv zes?
A tsim nested (qee zaum hu ua hierarchical tsim ) yog siv rau cov kev sim uas muaj kev txaus siab rau cov txheej txheem kev kho mob thiab cov kev sim ntsuas tau muab cais tawm.
Tom qab ntawd, lo lus nug yog, dab tsi yog qhov sib txawv ntawm qhov sib txawv? Qhov nominal sib txawv yog ua zes , txhais tau hais tias txhua tus nqi ntawm ib tug nominal sib txawv (cov subgroups) pom nyob rau hauv ua ke nrog tsuas yog ib tug nqi ntawm cov qib siab nominal sib txawv (cov pab pawg). Nested kev tsom xam ntawm qhov sib txawv yog qhov txuas ntxiv ntawm ib txoj kev anova uas txhua pab pawg tau muab faib ua pawg.
Yog li ntawd, nested txhais li cas hauv kev tshawb fawb?
kev kawm nested . ib kawm , feem ntau rooj plaub tswj, uas recruits kawm kawm los ntawm cov pej xeem uas nws tus yam ntxwv yog paub vim nws cov tswv cuab yog twb yog tej yam uas twb muaj lawm loj kawm (piv txwv li, ib pawg neeg sib tw kawm los yog loj randomized tswj mus sib hais).
Yuav ua li cas yog ib tug nested tsim nyob rau 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.
Pom zoo:
Kev tshawb fawb txog kev lag luam txhais cov hom kev tshawb fawb yog dab tsi?
Hom Kev Tshawb Fawb Kev Ua Lag Luam. Cov txheej txheem no suav nrog kev ua lag luam segmentation, kuaj cov khoom lag luam, kuaj kev tshaj tawm, kev soj ntsuam tus tsav tsheb tseem ceeb rau kev txaus siab thiab kev ncaj ncees, kev ntsuas kev siv tau, kev paub txog kev siv thiab kev tshawb fawb, thiab kev tshawb fawb txog nqi (siv cov tswv yim xws li kev sib koom ua ke), thiab lwm yam
Dab tsi yog qhov teeb meem rau kev tshawb nrhiav kev lag luam?
Kaum qhov teeb meem rau kev npaj ua lag luam Tsis meej pem ntawm kev tawm tsam thiab lub tswv yim. Kev cais tawm kev ua lag luam los ntawm kev ua haujlwm. Tsis meej pem ntawm kev lag luam muaj nuj nqi thiab lub tswv yim lag luam. Lub koom haum teeb meem. Tsis muaj kev tsom xam qhov tob. Tsis meej pem ntawm cov txheej txheem thiab cov zis. Tsis muaj kev paub thiab kev txawj ntse
Kev tshawb nrhiav kev thuam yog dab tsi?
Kev tshawb nrhiav kev thuam yog kev tshuaj xyuas ntawm kev tshawb nrhiav kev ua haujlwm uas tsom mus rau nws qhov muaj zog thiab kev txwv. Critiquing yog ib qho txheej txheem rau kev ntsuas kev tshawb fawb thiab cov txiaj ntsig tau tshaj tawm
Dab tsi yog qhov kev tshawb nrhiav thawj zaug hauv kev txheeb xyuas thiab tsim qauv?
Kev tshawb nrhiav thawj zaug yog ib txoj hauv kev los daws cov lus thov. Lub hom phiaj yog los txiav txim seb qhov kev thov puas siv tau thiab ua tau ua ntej qhov kev pom zoo tau mus txog ua tsis muaj dab tsi, txhim kho lossis hloov kho cov txheej txheem uas twb muaj lawm lossis ib qho uas twb muaj lawm
Kev tshawb nrhiav kev sib tw yog dab tsi?
Kev txheeb xyuas kev sib tw lossis kev tshawb fawb kev sib tw yog ib qho kev tshawb fawb ntawm cov tswv yim uas tshwj xeeb hauv kev sau thiab tshuaj xyuas cov ntaub ntawv hais txog cov tuam txhab sib tw. Nws yog ib qho tseem ceeb tactic kom paub seb koj cov neeg sib tw ua dab tsi thiab qhov kev hem thawj uas lawv nthuav tawm rau koj txoj kev noj qab haus huv nyiaj txiag