Txho qhov tshwm sim hais txog qhov tshwm sim ntawm cov khoom siv ntawm cov phab ntsa ntawm lub phab ntsa yog rub tawm ntawm qhov khoom ntawm qhov khoom ua kom txias thiab qhov sib zog, thiab yog li cov cim qhov muag pom ntawm qhov khoom.
Shrinkage feem ntau yog txuam nrog:
(1) cov teeb meem kev txhaj tshuaj (xws li kev txhaj tshuaj tsis tshua muaj siab, lub sijhawm tuav lub sijhawm tsis txaus, pwm kub dhau lawm, lub sijhawm txias tsis txaus, thiab lwm yam)
(2) teeb meem tsim teeb meem (kua nplaum poob qib tsis zoo, qhov piv ntawm qhov dav ntawm lub bar thiab kua nplaum poob qib tsis zoo, khoom kua nplaum poob qis heev dhau lawm, thiab lwm yam)
(3) teeb meem ua pwm (qhov ncauj tawm yog qhov me me los yog qhov ntws tsawg heev, thiab lwm yam).