Cov txheej txheem:

Koj yuav tshem tawm Multicollinearity li cas?
Koj yuav tshem tawm Multicollinearity li cas?

Video: Koj yuav tshem tawm Multicollinearity li cas?

Video: Koj yuav tshem tawm Multicollinearity li cas?
Video: Yuav ua li cas koj thiaj li paub (Ny ntxoo yang) nkauj tawm tshiab 2021/2022/ 2024, Kaum ib hlis
Anonim

Kuv Yuav Ua Li Cas Nrog Multicollinearity?

  1. Tshem tawm heev correlated kwv yees los ntawm tus qauv.
  2. Siv Ib Qho Me Me Squares Regression (PLS) lossis Tus Thawj Xib Fwb Tshawb Fawb, txoj hauv kev rov qab los uas txiav tus lej ntawm cov kwv yees mus rau pawg me me ntawm cov khoom uas tsis cuam tshuam nrog.

Tsis tas li ntawd, Multicollinearity yog dab tsi thiab koj tuaj yeem kov yeej nws li cas?

Multicollinearity tshwm sim thaum cov kev hloov pauv ywj pheej hauv tus qauv regression sib txheeb. Qhov kev sib raug zoo no yog teeb meem vim tias kev hloov pauv ywj pheej yuav tsum muaj kev ywj pheej. Yog tias qib ntawm kev sib txheeb ntawm qhov sib txawv yog siab txaus, nws tau ua teeb meem thaum koj haum tus qauv thiab txhais cov ntsiab lus.

Tseem Paub, vim li cas Multicollinearity muaj teeb meem? Multicollinearity yog a teeb meem vim tias nws cuam tshuam qhov tseem ceeb ntawm kev txheeb cais ntawm kev ywj pheej sib txawv. Lwm yam yog qhov sib npaug, qhov loj dua tus qauv ua yuam kev ntawm kev thim rov qab coefficient, qhov tsawg dua nws yog qhov kev sib koom ua ke no yuav muaj nuj nqis tseem ceeb.

Kuj Paub, koj ua li cas xam Multicollinearity?

Multicollinearity kuj tseem tuaj yeem kuaj pom nrog kev pab ntawm kev kam rau siab thiab nws qhov sib txawv, hu ua variance inflation factor (VIF). Yog tias tus nqi kam rau ua tsawg dua 0.2 lossis 0.1 thiab, ib txhij, tus nqi ntawm VIF 10 thiab siab dua, ces qhov multicollinearity yog teeb meem.

Puas Multicollinearity cuam tshuam rau kev twv ua ntej?

Multicollinearity tsis cuam tshuam zoo npaum li cas tus qauv haum. Qhov tseeb, yog koj xav siv tus qauv los ua twv ua ntej , ob qho qauv tsim cov txiaj ntsig zoo ib yam rau cov txiaj ntsig haum thiab twv ua ntej sib nrug!

Pom zoo: