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Wei Ji Ma
1,553 posts
Wei Ji Ma
@weijima01
Prof of neuroscience and psychology at NYU | Co-Founder, ruralchina.org | Founder, growingupinscience.org | Founding member, @ScientistAction.
Many chess players believe that women play worse chess than men. Here is how to respond. 1/- New book draft of "Bayesian modeling of perception and action", with @KordingLab @dangoldreich, now available at bayesianmodeling.com. We incorporated 100s of comments from the community - thanks so much everyone! To be published by @MITPress but e-book will remain free.
- Replying to @weijima01Anyway.. next time someone tells you that women are inferior to men because @MagnusCarlsen is much higher rated than Hou Yifan, tell them to do a permutation test and then try again. (Matlab code in the Chessbase article). 9/9
- Replying to @weijima01In this article on @ChessBase, I show that on average, Indian women play as well as men, and that the gap between the top female and the top male Indian player can easily be due to the participation gap only. en.chessbase.com/post/what-gend… 6/
- Bayesian modeling of perception and action: draft of book with Konrad Kording (@KordingLab) and Daniel Goldreich (@dangoldreich) done after 10 years... To be published by @mitpress but already freely available on bayesianmodeling.com. Comments are welcome (link there)!! 1/2
- Replying to @weijima01But... the proportion of rated female players is very low (most likely due to many systemic disadvantages and biases that they face). If you want to compare groups of unequal sizes, it's a really bad idea to use the top individuals as a metric. 3/
- Bayesian models of perception and action, with @KordingLab and @dangoldreich, published by @mitpress. Hardcover is $65 but free e-book should be available soon, as will be solutions to selected problems. Comments and corrections are now welcome on bayesianmodeling.com.
- Replying to @weijima01On average, Group A will score 91.4 and Group B 67.2. The only difference between Groups A and B is the number of people. The larger group has more shots at a high score, so will on average get a higher score. 5/
- Replying to @weijima01If you take into account how chauvinist and actively oppressive the chess world is towards women (see also this: en.chessbase.com/post/women-in-…), it's safe to say that the top female chess players are actually OVERperforming. 8/
- Finally out! This paper took approximately 10 years. Work by @basvanopheusden with @Ikuperwajs, @zahybnaya, Gianni Galbiati, and Yunqi Li. nature.com/articles/s4158… Happy to answer questions. Brief history of the project on cns.nyu.edu/malab/publicat…
- As part of an amazing mentorship course for faculty by @yael_niv and @CollegeInMind, I drafted a "Statement on lab culture and expectations". Higher-level than a lab manual. docs.google.com/document/d/1f6… Would love comments (here or in the document). And feel free to use anything!
- Replying to @weijima01Let’s say group A has 10 people, group B has 2. Each of the 12 people randomly gets assigned a number between 1 and 100. Then I use the highest number in Group A as the score for Group A and the highest number in Group B as the score for Group B. 4/
- Replying to @weijima01Essentially the same argument was made back in 2009 by Merim Bilalić, Kieran Smallbone, Peter McLeod, and @FernandGobet, but chess players don't know this article or choose to ignore it. 7/
