PROC SURVEYSELECT provides a variety of methods for selecting probability-based random samples. With probability sampling, each unit in the survey population has a known, positive probablity of ...

In a study published in PNAS, a research team developed a new reinforcement learning-based enhanced sampling method called Adaptive Collective Variables Generator (Adaptive CVgen), which has been ...

Rubin's research articles on matched sampling, from the early 1970s ... Multivariate matching methods that are equal percent bias reducing, I: Some examples 7. Multivariate matching methods that are ...