Introduction to Directed Acyclic Graphs

March 21, 2014 – Dave Monaghan, Darren Kwong, and Dirk Witteveen, graduate candidates at the Graduate Center, CUNY, presented their seminar, “Advances in Quantitative Methods: An Introduction to Directed Acyclic Graphs.”

In their presentation, they reviewed some of the assumptions that plague the counterfactual model and showed how recent research on directed acyclic graphs (DAGs) can help with problems of identification of causal effects between variables. Ultimately, DAGs demonstrate that researchers need to be careful of what variables they include in their analysis and provide researchers a more rigorous approach to building their analytical models.

If you missed this seminar, you can catch it here: http://videostreaming.gc.cuny.edu/videos/video/1426

Dr. Graham Williams’ Workshop “Excavating Knowledge from Data”

March 7, 2014 – Graham Williams, Data Scientist at the Australian Taxation Office and Adjunct Professor at the Australian National University, led a workshop titled, “Excavating Knowledge from Data: Introducing Data Mining Using R.” Dr. Williams is the author of the Rattle software for data mining and of the Rattle book, Data Mining with Rattle and R: The Art of Excavating Knowledge from DataGraham_Williams_pic

During the workshop, Dr. Williams shared insight about the many uses of data mining. He provided live tutorials of how to prepare data and run models using R and, more specifically, Rattle. This workshop is a great introduction on data mining for anybody interested in learning R coding.

If you missed Dr. Williams’ workshop, you can watch the recording of it by clicking on the links below. Additionally, handouts of the workshop are also provided. We ask if you find the workshop or the handouts useful to your work that you properly cite his recording or materials, which he has graciously allowed us to share on our website. If you would like more information about Dr. Williams and his work, be sure to check out his website: http://www.togaware.com/Graham.Williams/

Part 1 of 4 of workshop: https://videostreaming.gc.cuny.edu/videos/video/1377

Part 2 of 4 of workshop: https://videostreaming.gc.cuny.edu/videos/video/1379

Part 3 of 4 of workshop: https://videostreaming.gc.cuny.edu/videos/video/1380

Part 4 of 4 of workshop: https://videostreaming.gc.cuny.edu/videos/video/1381

Handouts: Handouts for Workshop on Rattle and R