The U.S. Census Bureau has historically used nearest neighbor (NN) or random hot deck (RHD) imputation to handle missing data for many types of survey data. Using these methods removes the need to parametrically model values in imputation models. With strong auxiliary informat...
While the paucity of existing material determines the overall methodology of the empirical study, the specific problem addressed necessitates the use of questionnaires and interview. For the questionnaires, the researcher had chosen a random sample among the rural migrants in Beijing. A questionnaire, ...
Three telephone surveys were conducted in collaboration with the UCD School of Public Health and Population Science, University College Dublin, Ireland from 2000 to 2005. All were quantitative population-based surveys of random samples of the general public and examined health-related attitudes and beha...
Therefore, it is useful to characterize the evolutionary method in terms of numerical optimization with much smaller stress on the biological metaphor.EM consists in searching the space of candidate solutions by sampling it on random, according to a certain probability distribution, referred to as ...