Emil O. W. Kirkegaard blog
Edit 2019 You don’t really need the below. Look at the `model.matrix()` function, which converts data frames into matrices for glmnet and similar function. Original post Sometimes you need to use a function that wants a numeric matrix as input. One such function is glmnet.cv() which performs lasso regression with cross validation, which is very…
Continue ReadingGoodreads. The book is on Libgen (free download). Since I have ventured into criminology as part of my ongoing research program into the spatial transferability hypothesis (psychological traits are stable when people move around, including between countries) and the immigrant groups by country of origin studies, I thought it was a good idea to actually…
Continue ReadingFrom the interactive visualization I previously published to give foster an intuitive understanding of the concept: Tail effects are when there are large differences between groups at the extremes (tails) of distributions. This happens when the distributions differ in either the mean or the standard deviation (or both), even when these differences are quite small….
Continue ReadingFrom Reddit. https://www.reddit.com/r/psychology/comments/3hktp8/try_phacking_for_yourself_the_process_of_fishing/cu8rexf?context=3 [–]jufnitz 2 points 1 day ago Not a bad place to plug the excellent, accessible, and snarky Statistics Done Wrong, which explains this problem with p-values along with many other, similarly rampant statistical missteps in natural and social science. Also too, this: Science is not a magic wand that turns everything it…
Continue ReadingWhat is age heaping? Number heaping is a common tendency of humans. What this means is that we tend round numbers to the nearest 5 or 10 (those of us that use the decimal system!). Age heaping is the tendency of innumerate people to round their age to the nearest 5 or 10, presumably because…
Continue ReadingNote that perhaps there should be doubt quotation marks around human in the title. Would humans with a 1,000 SD increase in (general) cognitive ability (CA) really be human? Steve Hsu discusses his rough estimation that we can increase CA in humans around 1,000 SD by basically turning all the current alleles with negative effects…
Continue Reading