PinnedWeonhyeok ChungWhat I want to Write About — As a Ph.D. Economics Candidate (Final Year)Wish list of what I want to write about in MediumOct 7, 20221Oct 7, 20221
Weonhyeok ChungBig Data Analysis at Home: AWS S3 to PythonAs a side project, I practice SQL using gigabytes of data stored in AWS S3. I build a data lake in AWS and extract aggregated data that I…Oct 22, 2022Oct 22, 2022
Weonhyeok ChungWhy Spillover Effects Bias Your AB Testing Results and Ways to Overcome themOn many platforms, one user’s action influence other users’ actions. For example, if I use certain products, then the people who are…Oct 15, 2022Oct 15, 2022
Weonhyeok ChungBook Summary: “Trustworthy Online Controlled Experiments” [Part V.]This part is an advanced topic to analyze experiments. Multiple hypothesis testing, A/A test to check the validity of the test, and checkOct 13, 2022Oct 13, 2022
Weonhyeok ChungBook Summary: “Trustworthy Online Controlled Experiments” [Part IV.](Preview) I like this part as I learned a lot about domain knowledge for experimentation platforms. This part incorporates data engineering…Oct 13, 2022Oct 13, 2022
Weonhyeok ChungBook Summary: “Trustworthy Online Controlled Experiments” [Part III.](Preview) This part introduces some techniques that can complement experiments. It is often difficult to understand the underlying…Oct 13, 2022Oct 13, 2022
Weonhyeok ChungBook Summary: “Trustworthy Online Controlled Experiments” [Part II.](Preview) In this part, I learned what are the types of metrics in online AB testing, how to incorporate multiple metrics, and why it is…Oct 13, 2022Oct 13, 2022
Weonhyeok ChungBook Summary: “Trustworthy Online Controlled Experiments” [Part I.]This is my summary of the book on AB testing, “Trustworthy Online Controlled Experiments” (by Ron Kohavi, Diane Tang, and Ya Xu)Oct 10, 2022Oct 10, 2022
Weonhyeok ChungSelection Bias and Why We Need RandomizationSuppose we want to test the effect of policy, such as discount coupon on users’ amount of purchase. Can we compare the average purchase…Oct 8, 2022Oct 8, 2022