Summer 2007 - Challenges in Dynamic Treatment Regimes and Multistage Decision-Making

Workshop Information

Schedule

Tutorials: June 18-20, 2007

Monday, June 18, 2007

Room H, 3rd Floor

8:00-9:00 a.m. Registration and Continental Breakfast
9:00 a.m. Introduction and Welcome
Marie Davidian, North Carolina State University
9:30-10:45 Introduction to Causal Inference
Miguel Hernan, Harvard School of Public Health
10:45-11:00 Break
11:00-12:15 Introduction to Causal Inference (continued)
Miguel Hernan, Harvard School of Public Health
12:15-2:00 p.m. Lunch (Room FG, 3rd Floor)
2:00-3:15 Introduction to Dynamic Treatment Regimes
Butch Tsiatis, North Carolina State University
3:15-3:30 Break
3:30-4:45 Introduction to Dynamic Treatment Regimes (continued)
Butch Tsiatis, North Carolina State University

Tuesday, June 19, 2007

Room H, 3rd Floor

8:30-9:00 a.m. Registration and Continental Breakfast
9:00-10:30 RL with Additional Discussion of Connections to Classification
Ron Parr, Duke University
10:30-10:45 Break
10:45-12:15 RL with Additional Discussion of Connections to Classification (continued)
Ron Parr, Duke University
12:15-2:00 p.m. Lunch (Room FG, 3rd Floor)
2:00-3:15 Computational Challenges with High Dimensional Data
Joelle Pineau, McGill University
3:15-3:30 Break
3:30-4:45 Computational Challenges with High Dimensional Data (continued)
Joelle Pineau, McGill University

Wednesday, June 20, 2007

Room H, 3rd Floor

8:30-9:00 a.m. Registration and Continental Breakfast
9:30-10:30 Introduction to Mechanistic Models and Control Theory
Daniel Rivera, Arizona State University
10:30-10:45 Break
10:45-12:00 Introduction to Mechanistic Models and Control Theory (continued)
Daniel Rivera, Arizona State University
12:00-1:30 p.m. Lunch (Room FG, 3rd Floor)
1:30-2:00 p.m. Poster Presentation Session (2 minutes each, up to one transparancy)
2:00-3:15 Introduction to Nonstandard Statistical Inference
Experimental Trials
Susan Murphy, University of Michigan
3:15-3:30 Break
3:30-4:45 Introduction to Nonstandard Statistical Inference (continued)
Susan Murphy, University of Michigan
5:30-7:30 Poster Session and Reception, Room BC
(Please have your poster set up by 5:15)

SAMSI will provide poster presentation boards and tape. The board dimensions are 4 ft. wide by 3 ft. high. They are tri-fold with each side being 1 ft. wide and the center 2 ft. wide. Please make sure your poster fits the board. The boards can accommodate up to 16 pages of paper measuring 8.5 inches by 11 inches.

Opening Workshop (Thursday, June 21 - Friday, June 22 at Radisson RTP):
The workshop featured one or two overview talks presenting the "big picture" of the methodological challenges followed by more advanced and targeted talks on research relevant to development of dynamic treatment regimes that build on the foundation provided by the tutorials. There were talks the first full day and second morning, after which participants were divided into discussion groups centered around four key areas that formed the basis for "brainstorming" by working groups during the next week of the program (below). The discussion groups developed lists of important challenges and questions centered around their theme.

Thursday, June 21, 2007

Room H, 3rd Floor

8:00-9:00 a.m. Registration and Continental Breakfast
9:00-9:05 Welcome
9:05-9:35 Introduction by Susan Murphy, University of Michigan
9:35-10:05 Sample Complexity of Policy Search with Known Dynamics
Ambuj Tewari, Univ. of California-Berkeley
10:10-10:35 Discussion
What is the promise of work in sample complexity and upper bounds on generalization error?
10:35-10:50 Break
10:50-11:20 Clinical data based optimal STI strategies for HIV: a reinforcement learning approach
Damien Ernst, Supélec
11:25-11:55 From Population to Individual Drug Dosing in Chronic Illness - Intelligent Control for Management of Renal Anemia
Adam Gaweda, University of Louisville
12:00-12:30 Discussion
What are the issues with model based work?
12:30-1:45 Lunch (Room FG, 3rd Floor)
1:45-2:15 Estimation of the effect of dynamic treatment regimes under flexible dynamic visit regimes
Andrea Rotnitzky , Di Tella University and Harvard University
2:20-2:50 Asymptotic Bias Correction for Estimates of Optimal Dynamic Treatment Regimes
Erica Moodie, McGill University
2:55-3:20 Discussion
What are the issues that concern statisticians?
3:20-3:35 Break
3:35-4:05 Adaptive stimulation design for the treatment of epilepsy
Joelle Pineau , McGill University
4:10-4:40 Bias and Variance in Value Function Estimates
Peng Sun, Duke University
4:45-5:15 Wrap-up discussion. Plan for Friday.

Friday, June 22, 2007

Room H, 3rd Floor

8:30-9:00 a.m. Registration and Continental Breakfast
9:00-10:30 Tutorial/Talk --Inference for Dynamic Regimes
Jamie Robins, Harvard University
10:30-10:45 Break
10:45-12:00 Tutorial/Talk --Inference for Dynamic Regimes (continued)
Jamie Robins, Harvard University
12:00-1:30 Lunch (Room FG, 3rd Floor)
1:30-3:00 Discussion of Working Group Projects and Activities

Working Groups (Monday, June 25 - Wednesday, June 27 at SAMSI):
Four Working Groups convened to discuss and prioritize challenges in their respective areas. Participants identified the most pressing problems and outline modes of attack and specific research directions to be pursued. The working group foci and potential lead participants are:

  • Difficulties In Statistical Inference (Peter Bartlett, Susan Murphy, Sasha Rakhlin, Jamie Robins)
  • Bayesian Approaches (Brad Carlin, Peter Thall)
  • The Role of Mechanistic Models (Tom Banks, Victoria Chen, Marie Davidian, Daniel Rivera)
  • Practical Challenges and Applications (Erica Moodie, Joelle Pineau, Butch Tsiatis)

Working Groups will met daily according to a schedule that will allow participants to be involved with more than one group if desired.

Transition Workshop (Thursday, June 28 - Friday, June 29 at SAMSI):
Each Working Group presented their results, findings, and recommendations for the future to all Working Group members along with additional participants who may return for this final activity. Discussion followed each group's presentation. These presentations and discussions formed the basis for a white paper outlining methodological challenges in the area of dynamic treatment regimes to be written by the Program Leaders for submission to a leading statistical or mathematical science journal, with input from participants.