### RIT on Statistics Archives for Academic Year 2015

#### Organizational Meeting

When: Tue, September 15, 2015 - 3:30pm

Where: MATH 1313

Speaker: Dr. Paul Smith (UMCP) -

#### Clustering: Algorithms, Applications, and potential research extensions

When: Tue, September 22, 2015 - 3:30pm

Where: MATH 1313

Speaker: Cheng Jie (UMCP) -

#### Clustering

When: Tue, September 29, 2015 - 3:30pm

Where: Math 1313

Speaker: Jie Cheng & Alex Estes (UMCP) -

#### Performance of Classifiers

When: Tue, October 6, 2015 - 3:30pm

Where: MTH 1313

Speaker: Lijuan Cao (UMCP) -

#### Principal Components Analysis

When: Tue, October 13, 2015 - 3:30pm

Where: MTH 1313

Speaker: Franck Ndjakou Njeunje (UMCP) -

#### Spectral Methods

When: Tue, October 20, 2015 - 3:30pm

Where: MTH 1313

Speaker: David Bekkerman (UMCP) -

#### Text Clustering and Classification

When: Tue, November 3, 2015 - 3:30am

Where: MTH 1313

Speaker: Lijuan Cao (UMCP) -

#### Clustering and the Bootstrap

When: Tue, November 10, 2015 - 3:30am

Where: MTH 1313

Speaker: Paul Smith (UMCP) -

#### Representative Traffic Management Initiatives

When: Tue, November 10, 2015 - 3:30pm

Where: MTH 1313

Speaker: Alex Estes (UMCP) -

#### Organizational meeting

When: Mon, February 15, 2016 - 3:00pm

Where: MTH 0201

Speaker: Takumi Saegusa (UMCP) -

Abstract: This semester's RIT will deal with Empirical Process Theory with applications to Semiparametric Models.

#### Organizational Meeting

When: Mon, February 22, 2016 - 3:00pm

Where: MTH 0201

Speaker: Takumi Saegusa (UMCP) -

#### TBD

When: Mon, February 29, 2016 - 3:00pm

Where: MTH0201

Speaker: Takumi Saegusa (UMCP) -

#### Z-theorems

When: Mon, March 7, 2016 - 3:00pm

Where: MTH0201

Speaker: Takumi Saegusa (UMCP) -

#### Cox model with right censoring

When: Mon, March 21, 2016 - 3:00pm

Where: MTH0201

Speaker: Takumi Saegusa (UMCP) -

#### Martingales versus Empirical Process Theory in Proving the Functional Central Limit Theorem for Repeated Logrank Statistics

When: Mon, March 28, 2016 - 3:00pm

Where: MTH0201

Speaker: Eric Slud (UMCP) -

Abstract: In this talk, I will begin by defining the logrank statistic for testing equality of survival outcomes in a two-group survival experiment and briefly explain its relation to martingales. The Martingale Central Limit Theorem turns out to be a very good way to prove a Central Limit Theorem for this kind of statistic, when the data-sample is large. However, suppose one wishes to prove a Functional Central Limit Theorem covering the large-sample behavior of the logrank statistic calculated repeatedly over time, considered as a stochastic process. Then we will see that empirical process techniques and NOT martingales are the best way to prove a large-sample limit theorem.

The material of the lecture will intersect material from survival analysis (logrank statistic, which is discussed for example in the Survival Analysis text of Klein and Moeschberger), from a couple of well-known papers one by Tsiatis (1982), one by Sellke (1984) and one by me (1984), and from empirical-process material that can be found in later papers of Ming Gao Gu.

#### Cox Model (continued)

When: Mon, April 11, 2016 - 3:00pm

Where: MTH0201

Speaker: Takumi Saegusa (UMCP) -