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Biostatistics Seminars

Department of Biostatistics Seminar Series


The Department of Biostatistics presents a regular speaker series each semester, generally on Thursday afternoon each week. Diverse experts lecture on their work in biostatistics.

Upcoming Biostats Seminars

Biostatistics Seminar Series

Nonparametric Procedures for Testing Order Among Multivariate Distributions - Shyamal D. Peddada

Thursday 2/15 3:30PM - 4:30PM
Public Health Auditorium (G23)

Shyamal D. Peddada, PhD, Professor & Chair, Department of Biostatistics, will present, "Nonparametric procedures for testing order among multivariate distributions."

Comparison of two or more ordered experimental groups on the basis of multivariate data is a common problem of interest in a wide range of applications such as in economics, finance, toxicology, clinical trials, etc.  Marginally, not only are the data not normally distributed, the shape of the distribution may even change with population (or experimental groups).  Thus the data are not likely to be multivariate normally distributed. Secondly, from an application point of view, often researchers are not only interested in determining whether the experimental groups are different from each other but whether they are “ordered” (in some sense) in the response vector.  Since the shape of the distribution may change over the experimental groups, it may not be sufficient or even meaningful to compare the mean vectors.  For example, even though the population means are identical the probability distributions could be very different. Consequently, standard multivariate methods such as the multivariate analysis of variance (MANOVA) may not suitable.   In this talk we describe some notions of stochastic ordering of multivariate random vectors and develop methodologies for testing such orders.  Resulting methodologies are illustrated using some examples from toxicology.  Time permitting, we shall discuss multivariate tests for the case of nearly singular distributions that can occur due to high dimensionality.  

Last Updated On Monday, February 12, 2018 by Temp, GSPH Marketing & Development
Created On Tuesday, February 06, 2018

Previous Biostats Seminars

Thu 12/6/2018
Biostatistics Faculty Presentations: Jeanine M. Buchanich and Yongseok Park Biostatistics Seminar Series
Biostatistics Faculty Presentations: Jeanine M. Buchanich and Yongseok Park
Thu 12/6/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

Thu 11/29/2018
Dulal K. Bhaumik, University of Illinois at Chicago Biostatistics Seminar Series
Dulal K. Bhaumik, University of Illinois at Chicago
Thu 11/29/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

Dulal K. Bhaumik, Division of Epidemiology and Biostatistics, University of Illinois at Chicago, will present, “Statistical Methodologies for Neuroconnectivity Analysis Using Autistic fMRI Data”.
Thu 11/8/2018
Hongzhe Lee, University of Pennsylvania Biostatistics Seminar Series
Hongzhe Lee, University of Pennsylvania
Thu 11/8/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

Hongzhe Lee, Department of Biostatistics and Epidemiology, University of Pennsylvania, will present, “Optimal Permutation Recovery and Estimation of Bacterial Growth Dynamics”.
Thu 11/1/2018
Jingyi (Jessica) Li, University of California, Los Angeles Biostatistics Seminar Series
Jingyi (Jessica) Li, University of California, Los Angeles
Thu 11/1/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

Jingyi (Jessica) Li, Department of Statistics and Department of Human Genetics, University of California, Los Angeles, will present, “Neyman-Pearson Classification Algorithms and NP Receiver Operating Characteristics”.
Thu 10/25/2018
Dana L. Tudorascu, University of Pittsburgh Biostatistics Seminar Series
Dana L. Tudorascu, University of Pittsburgh
Thu 10/25/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

Dana Tudorascu, Division of General Internal Medicine, Department of Medicine, University of Pittsburgh, will present, “Technical Challenges in the Statistical Analysis of Neuroimaging Studies of Alzheimer's Disease”.
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Contact

For information on seminars and events in the department, contact:

Bernadette Kapko
bkapko@pitt.edu
412-624-3022

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