A preliminary study on common variable selection strategy in data fusion

초록

Data fusion has been known as a major approach for estimating missing values in large databases. Although selecting common variables is one of the important factors in data fusion, few studies have systematically investigated the various methods available. In this study three strategies are considered for selecting a set of common variables and their results are compared using a Monte Carlo simulation. Selection strategies by variance and by weighted importance perform better than random selection. The results also show that, in locating a donor, the Euclidean distance-based selection outperforms the inter-respondent correlation-based selection. Directions for future research are also discussed.

키워드