Impact of zero-cell correction strategies on the estimation of tetrachoric correlation matrices

• In Event: GSIC Poster Session II

Abstract

This study investigates different zero-cell correction strategies in estimating tetrachoric correlation matrices, including which value to add, whether to keep marginals, and where to add. Preliminary results show that the correction strategy significantly affects the positive-definiteness of the correlation matrix. Correlation size and threshold pattern moderate the results.

Authors

• Jeongwon Choi, VANDERBILT UNIVERSITY

• Hao Wu, Vanderbilt University