The Pólya process is an urn scheme arising in the context of the contagion spreading. It exhibits unstable persistence effects. The Friedman urn process is dual to the Pólya one with antipersistent stabilizing effects. It appears in a safety campaign problem. A Pólya-Friedman urn process is investigated with a tuning persistence parameter extrapolating the latter two extreme processes. The stud...

A fundamental task in machine learning is to compare the performance of multiple algorithms. This is usually performed by the frequentist Friedman test followed by multiple comparisons. This implies dealing with the well-known shortcomings of null hypothesis significance tests. We propose a Bayesian approach to overcome these problems. We provide three main contributions. First, we propose a no...

Adrienne S. Glaich, MD; Leonard H. Goldberg, MD, FRCP; Tianhong Dai, PhD; Joy H. Kunishige, MD; Paul M. Friedman, MD; DermSurgery Associates, Houston, Texas (Drs Glaich, Goldberg, and Friedman); and Departments of Dermatology, Weill Cornell Medical College, Methodist Hospital, Houston (Drs Goldberg and Friedman), Harvard Medical School, Boston, Massachusetts (Dr Dai), and The University of Texa...

The rapid expansion of the Internet has resulted not only in the ever-growing amount of data stored therein, but also in the burgeoning complexity of the concepts and phenomena pertaining to that data. This issue has been vividly compared by the renowned statistician J.F. Friedman (Friedman, 1997) of Stanford University to the advances in human mobility from the period of walking afoot to the e...

While methods for comparing two learning algorithms on a single data set have been scrutinized for quite some time already, the issue of statistical tests for comparisons of more algorithms on multiple data sets, which is even more essential to typical machine learning studies, has been all but ignored. This article reviews the current practice and then theoretically and empirically examines se...

NEED FOR INFORMATION concernng the validity of hepatic test results obtained from refrigerated blood or serum arose in connection with a blood donor screening program. As a part of this program, hepatic tests were applied to every donor reporting to the donation station for the purpose of excluding those carriers of viral hepatitis or others suffering from subclinical illnesses associated with ...