Inequality in reading and math skills forms mainly before kindergarten: A replication, and partial correction of 'Are schools the great equalizer?'
https://journals.sagepub.com/doi/full/10.1177/0038040718801760 When do children become unequal in reading and math skills? Some research claims that inequality grows mainly before school begins. Some research claims that schools cause inequality to grow. And some research—including the 2004 study ‘‘Are Schools the Great Equalizer?’’—claims that inequality grows mainly during summer vacations. Unfortunately, the...
[Book] Statistical Rethinking
https://xcelab.net/rm/statistical-rethinking/ https://elevanth.org/blog/2018/07/14/statistical-rethinking-edition-2-eta-2020/ https://github.com/rmcelreath/stat_rethinking_2020, Statistical Rethinking Winter 2019 videos https://fehiepsi.github.io/rethinking-numpyro/ Statistical Rethinking: A Bayesian Course with Examples in R and Stan builds your knowledge of and confidence in making inferences from data. Reflecting the need for scripting in today’s model-based statistics, the book pushes you to perform step-by-step calculations that are...
Three pillars of data science
https://dataorigami.net/blogs/napkin-folding/three-pillars-of-data-science Description Description is what I feel the majority of data scientists in industry focus on. This could be something as simple as mean, a conversion rate, a time series, etc. or something more advanced like a statistical test. Description also includes data mining algorithms like clustering and association rules....
Interviewing is a noisy prediction problem
https://erikbern.com/2018/05/02/interviewing-is-a-noisy-prediction-problem.html Over time I’ve come to the (slightly disappointing) realization that knowing who’s going to be good at their job is an extremely hard problem. The correlation between who did really well in the interview process and who performs really well at work is really weak. Given that you have...
How to identify talent: Five lessons from the NFL draft
https://behavioralscientist.org/how-to-identify-talent-five-lessons-from-the-nfl-draft/ Yet, if there is one consistent yet underappreciated principle for making good hires, it is that process beats technology. It turns out that best practices in hiring have much in common with what psychologists have preached for decades. The best teams have philosophies and policies that firmly guide the...
Psychological targeting as an effective approach to digital mass persuasion
https://www.pnas.org/content/114/48/12714 People are exposed to persuasive communication across many different contexts: Governments, companies, and political parties use persuasive appeals to encourage people to eat healthier, purchase a particular product, or vote for a specific candidate. Laboratory studies show that such persuasive appeals are more effective in influencing behavior when they...
Modeling techniques for adaptive practice systems
https://is.muni.cz/th/255651/fi_d/thesis.pdf We study the challenges associated with the development of adaptive practice systems, particularly with the focus on the description of methods, which allow running such intelligent systems which give answers to questions occurring during development and automatize tasks usually done by human experts. First, we describe various techniques which...
Bayesian knowledge tracing, logistic models, and beyond: an overview of learner modeling techniques
https://link.springer.com/article/10.1007/s11257-017-9193-2 https://www.fi.muni.cz/~xpelanek/publications/umuai-overview.pdf Learner modeling is a basis of personalized, adaptive learning. The research literature provides a wide range of modeling approaches, but it does not provide guidance for choosing a model suitable for a particular situation. We provide a systematic and up-to-date overview of current approaches to tracing learners’ knowledge...
The startup founder's guide to analytics
https://thinkgrowth.org/the-startup-founders-guide-to-analytics-1d2176f20ac1 This post is about how to create the analytics competency at your organization. It’s not about what metrics to track (there are plenty of good posts about that), it’s about how to actually get your business to produce them. As it turns out, the implementation question — How do...
Research debt
https://distill.pub/2017/research-debt/ Achieving a research-level understanding of most topics is like climbing a mountain. Aspiring researchers must struggle to understand vast bodies of work that came before them, to learn techniques, and to gain intuition. Upon reaching the top, the new researcher begins doing novel work, throwing new stones onto the...
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a collection of excerpts from interesting research, blogs, events, etc...