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March 2016

Graduate Seminar: Amanda Henley, UNC Library Research Hub

March 9, 2016 @ 3:30 pm - 4:30 pm

UNC Library Research Hub How can the library help you? Wednesday, March 9, librarians from the Libraries' Research Hubs will give a presentation about the library services and resources most relevant to STOR graduate students. Librarians will demonstrate how to find and cite interesting data, and discuss how Geographic Information Systems (GIS) can be used to generate variables, manipulate data and perform spatial analyses. Citation and reputation management will also be discussed. Please join us and bring your questions.

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April 2016

Graduate Seminar: Sandeep Sarangi, UNC Research Computing

April 20, 2016 @ 3:30 pm - 4:30 pm

Cluster Computing for Researchers: The use of computing clusters is often essential for method development in Statistics and Operations Research. Today's talk will introduce the different computing options to UNC students and faculty. Topics will be general and include the essential functions and techniques to effectively use the computing clusters here at UNC. The information covered will be of use to people in all stages of research; from first years who will soon be starting research, to fifth years who…

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September 2016

STOR Graduate Seminar: Steven Wolf and Gina-Marie Pomann

September 21, 2016 @ 3:30 pm - 4:30 pm

Graduate Seminar Wednesday, September 21st, 2016 120 Hanes Hall 3:30pm Steven Wolf and Gina-Maria Pomann Duke's Biostatistics Core Collaborating in Clinical Research with Duke’s Biostatistics Core The Biostatistics Core at Duke aims to work with an interdisciplinary network of clinical investigators conducting research at Duke by providing expertise in study design, implementation of statistical methodology, and interpretation of results. We actively participate on all aspects of statistical design and analysis, protocol development/grant applications with statistical considerations such as power/sample calculations,…

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October 2016

Graduate Student Seminar: Danianne Mizzy

October 5, 2016 @ 3:30 pm - 4:30 pm

Danianne Mizzy from the Science Library will speak and answer questions about resources and services available to all graduate students.   Location:  Hanes Hall 125

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Graduate Seminar – Kai Zhang

October 26, 2016 @ 3:30 pm - 4:30 pm

Kai Zhang Statistics and Operations Research UNC-Chapel Hill BET on Independence We study the problem of model-free dependence detection. This problem can be difficult even when the marginal distributions are known. We explain this difficulty by showing the impossibility to uniformly consistently distinguish degeneracy from independence with any single test. To make model-free dependence detection a tractable problem, we introduce the concept of binary expansion statistics (BEStat) and propose the binary expansion testing (BET) framework. Through simple mathematics, we convert…

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January 2017

Grad Student Seminar

January 20 @ 3:30 pm - 4:30 pm

Siyun Yu Server Allocation at Virtual Computing Labs via Queueing Models and Statistical Forecasting The Virtual Computing Lab (VCL) is a cloud computing service that provides users remote access to software applications. The main challenge is to decide how many servers should be preloaded with which applications, and how many servers should be left flexible, to be loaded with the requested application on demand. If a preloaded server with a desired application is available, the user gets immediate access. If…

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February 2017

Graduate Student Seminar: Jonathan Williams

February 3 @ 3:30 pm - 4:30 pm

Jonathan P. Williams UNC-Chapel Hill Non-penalized variable selection in high-dimensional linear model settings via generalized fiducial inference This is joint work with Jan Hannig Standard penalized methods of variable selection and parameter estimation rely on the magnitude of coefficient estimates to decide which variables to include in the final model.  However, coefficient estimates are unreliable when the design matrix is collinear.  To overcome this challenge an entirely new method of variable selection is presented within a generalized fiducial inference framework. …

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Graduate seminar: Walt DeGrange, CANA Advisors

February 17 @ 3:30 pm - 4:30 pm

Walt DeGrange is a Principal Operations Research Analyst for CANA Advisors where he leads operations research analysis across federal and commercial domains. He is also a faculty member at the University of Arkansas in the Operations Management graduate program, a MBA Executive  Practicum Advisor at the NC State University Supply Chain Resource Cooperative, a MORS Board of Director and the Chairperson for the INFORMS SpORts Section. His analytics projects include work with the Navy, Marine Corps, St Louis Blues (NHL),…

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Graduate Seminar: Kelly Bodwin and John Palowitch

February 24 @ 3:30 pm - 4:30 pm

Kelly Bodwin and John Palowitch UNC-Chapel Hill Object-Set Testing Methods for Association Mining The exploratory mining of hidden, modular subgroups in complex systems is an ever-important task in our increasingly interconnected world. Go-to clustering approaches still involve classical methods like k-means, aggolmerative pairing, and latent-space modeling. These methods usually operate via an objective score of a partition of objects in the system under study: the higher the score, the stronger the "modularity" of the partition. In this talk, we present…

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March 2017

Grad Student Seminar: Yunxiao Liu

March 24 @ 3:30 pm - 4:30 pm

Yunxiao Liu UNC-Chapel Hill Semiparametric Inference of Integrated Volatility Functionals Using High-frequency Financial Data With the advent of intraday high-frequency data of financial assets since the late 1990s, the research of financial econometrics has entered into a “big data” era. New theoretical techniques using the theory of continuous time stochastic processes has been extensively developed, and new empirical evidence has been documented. In particular, due to its far-reaching applications in various fields such as risk management and option pricing, the…

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