ISRG Seminars
2014 NCTS Industrial Statistics Research Group Seminar
Speaker: Prof. Wei-Yin Loh
(University of Wisconsin, Madison)
Time: 14:00-16:30, Fri., March 7, 2014
(Tea time: 15:00-15:30)
Topic: A Regression Tree Approach to Identifying Subgroups with Differential Treatment Effects
Abstract:
In the fight against hard-to-treat diseases such as cancer, it is often difficult to discover new treatments that benefit all subjects. For regulatory agency approval, it is more practical to identify subgroups of subjects for whom the treatment has an enhanced effect. Regression trees are natural for this task because they partition the data space. We briefly review existing regression tree algorithms. Then we introduce three new ones that are practically free of selection bias and are applicable to two or more treatments, censored response variables, and missing values in the predictor variables. The algorithms extend the GUIDE approach by using three key ideas: (i) treatment as a linear predictor, (ii) chi-squared tests to detect residual patterns and lack of fit, and (iii) proportional hazards modeling via Poisson regression. Importance scores with thresholds for identifying influential variables are obtained as by-products. And a bootstrap technique is used to construct confidence intervals for the treatment effects in each node. Real and simulated data are used to compare the methods.
Place:
Lecture Room A of National Center for Theoretical Sciences (NCTS), 4th Floor, The 3rd General Building, National Tsing Hua University
| 日 期 (Date) ： | 2014-03-07(五)，14:00~16:30 |
| 題 目 (Topic) ： | A Regression Tree Approach to Identifying Subgroups with Differential Treatment Effects |
| 演講者 (Speaker) ： | Prof. Wei-Yin Loh (University of Wisconsin, Madisonniversity) |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2014-01-17(五)，14:00~15:00 |
| 題 目 (Topic) ： | Optimal Shrinkage Estimation in Heteroscedastic Hierarchical Models |
| 演講者 (Speaker) ： | Prof. Samuel Kou (Department of Statistics, Harvard University) |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2013/12/15(日)、12/16(一) |
| 題 目 (Topic) ： | 2013 NCTS ISRG Workshop on Recent Trends on Statistics |
| 地 點 (Place) ： | NCTS, 4th Floor, The 3rd General Building, National Tsing Hua University |
| 附件檔案 (Attachment)： | Program Abstract、Poster |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2013-11-22(五)，15:30~17:00 |
| 題 目 (Topic) ： | Introduction to the Development and Applications of Process Capability Analysis |
| 演講者 (Speaker) ： | Prof. Chien-Wei Wu 吳建瑋 (國立清華大學工業工程與工程管理學系) |
| 下 載 (Download) ： | pdf 檔 |
| 日 期 (Date) ： | 2013-11-22(五)，13:30~15:00 |
| 題 目 (Topic) ： | Templates for Design Key Construction |
| 演講者 (Speaker) ： | Prof. Ching-Shui Cheng 鄭清水 (中研院統計所所長) |
| 下 載 (Download) ： | pdf 檔 |
| 日 期 (Date) ： | 2013-10-25(五)，15:40~17:00 |
| 題 目 (Topic) ： | 巨量資料分析與智慧產業 |
| 演講者 (Speaker) ： | 林蔚君 博士 ((前瞻科技研究所所長) |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2013-10-25(五)，14:00~15:20 |
| 題 目 (Topic) ： | 巨量資料分析與智慧產業 |
| 演講者 (Speaker) ： | 王可言 博士 (資策會副執行長) |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2013-09-27(五)，15:30~17:00 |
| 題 目 (Topic) ： | 光電材料開發案例分享 |
| 演講者 (Speaker) ： | 王文泰先生 (達興材料股份有限公司／資深研究員) |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2013-09-27(五)，13:30~15:00 |
| 題 目 (Topic) ： | A Network Traffic Analysis System Based on the Statistical Process Control Mechanism |
| 演講者 (Speaker) ： | Prof. Ji-Cheng Wu 吳繼澄 (屏東科技大學 工管系) |
| 下 載 (Download) ： | ppt 檔 |
| 日 期 (Date) ： | 2013/7/25(四)、7/26(五)、7/29(一)，9:30~10:30 |
| 題 目 (Topic) ： | 2013 NCTS Summer Course on Statistics |
| 演講者 (Speaker) ： | Prof. Nozer D. Singpurwalla |
| 地 點 (Place) ： | Lecture Room A, NCTS, 4th Floor, The 3rd General Building, National Tsing Hua University |
| 下 載 (Download) ： | pdf 檔 |
| 日 期 (Date) ： | 2013-05-27(一)，10:40~11:30 |
| 題 目 (Topic) ： | Machine Learning Bias Correction for Minimal-error Classifier and a Meta-analysis Framework for Sparse K-means in Genomic Applications |
| 演講者 (Speaker) ： | Prof. George C. Tseng 曾建城 (Dept. of Biostatistics, Human Genetics and Computational Biology, University of Pittsburgh) |
| 下 載 (Download) ： |
| 日 期 (Date) ： | 2013-04-26(五)，15:30~17:00 |
| 題 目 (Topic) ： | Developing a Multiple Stage, Multiple Objective (MSMO) Green Building Framework |
| 演講者 (Speaker) ： | Dr. Pin Kung 龔彬博士 (Department of Statistics, National Cheng-Kung University) |
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| 日 期 (Date) ： | 2013-04-26(五)，13:30~15:00 |
| 題 目 (Topic) ： | A Two-Stage Estimation Procedure for Lifetime Distribution under Time-Censored Accelerated Degradation Test |
| 演講者 (Speaker) ： | Prof. Ming-Yung Lee 李名鏞教授 (Statistics and Informatics Department, Providence University) |
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| 日 期 (Date) ： | 2013-03-22(五)，15:30~17:00 |
| 題 目 (Topic) ： | Signatures of Coherent Systems and Joint Systems |
| 演講者 (Speaker) ： | Prof. N. Balakrishnan (McMaster University, Canada) |
| 下 載 (Download) ： | pdf檔 |
| 日 期 (Date) ： | 2013-03-22(五)，13:30~15:00 |
| 題 目 (Topic) ： | Optimum Step-Stress Acceleradted Degradation Test for Wiener Degradation Process under Time Constraint |
| 演講者 (Speaker) ： | Dr. Cheng-Hung Hu 胡政宏教授 (Yuan Ze University, Taiwan) |
| 下 載 (Download) ： | ppt檔 |
| 日 期 (Date) ： | 2013-02-22(五)，15:30~17:00 |
| 題 目 (Topic) ： | Introduce to the Count Function and Its Applications |
| 演講者 (Speaker) ： | Prof. Chang-Yun Lin 林長鋆教授 (Institute of Statistics, National Chung Hsing University) |
| 下 載 (Download) ： | pptx檔 |
| 日 期 (Date) ： | 2013-02-22(五)，13:30~15:00 |
| 題 目 (Topic) ： | The Augmented Desirability Function: Methods and Applications |
| 演講者 (Speaker) ： | Dr. Hsiu-Wen Chen 陳秀雯博士 (Institute of Statistical Science, Academia Sinica) |
| 下 載 (Download) ： | pdf檔 |
| 日 期 (Date) ： | 2012-12-21(五)，14:00~15:30 |
| 題 目 (Topic) ： | A Close Look at Run Length Distribution |
| 演講者 (Speaker) ： | Prof. Dennis Kon-Jin Lin 林共進 (Distinguished Professor of Supply Chain and Statistics, Penn State University, USA) |
| 下 載 (Download) ： | pdf 檔 |
| 日 期 (Date) ： | 2012-12-14(五)，14:00~15:30 |
| 題 目 (Topic) ： | System Unavailability Analysis Based on Window-Observed Recurrent Event |
| 演講者 (Speaker) ： | Prof. Yili Hong (Department of Statistics, Virginia Tech, Blacksburg, VA 24061, USA) |
| 下 載 (Download) ： | pdf 檔 |