Crowd analysis is of increasing interest. Sociologists, for example, are interested in studying social influence within and between small groups of individuals traveling in a crowd. However, current empirical studies conducted by human observers are very time-consuming. We propose an automatic,...

Federal agencies and other organizations often publish data summarized in arrays of non-negative integers, called contingency tables. When such data are released, it is necessary to prevent sensitive information pertaining to individuals from being disclosed. In statistical disclosure...

The efficiency measurement literature has been almost exclusively based on a static view of the firm. In this static context the optimality of decisions is measured against the best practice frontier in a period-by-period basis and without any connection along time. This dissertation departs...

Nonparametric regression models have been used to explorefeatures of data. Various estimation procedures have been proposedfor estimating nonparametric regression models in the literature.The existing procedures may enjoy some statistically optimalproperties, but it is difficult to use the...