Emil O. W. Kirkegaard blog
Here’s a whiny post on annoying R features. I love R and all, but it’s obnoxious to install. Not only does it take a long time to compile so many packages, this step typically has to be repeated a few times due to unforeseeable errors. These errors are typically also hard to find, one has…
Continue ReadingIf you want to train machine learning models, R offers thousands of packages to try out. However, most of these are written by random students and academics, so they are not proper standardized. It can looks like this: So, it’s a nightmare trying out a lot of models or (learning) algorithms to predict a specific…
Continue ReadingOpen source tends to get into these sorts of situations… https://forums.linuxmint.com/viewtopic.php?t=202909 https://github.com/linuxmint/Cinnamon/issues/3981 https://bugs.launchpad.net/linuxmint/+bug/1620318 The workaround is to do this: Command: sh -c ‘sleep 0.1; gnome-screenshot -a’ I think what it does is force the computer to wait 0.1 second, and then activates the usual command. No idea why this works. man pages:
Continue Readinghttps://www.goodreads.com/book/show/10753824-regression-modeling-strategies I heard some good things about this book, and some of it is good. Surely, the general approach outlined in the introduction is pretty sound. He sets up the following principles: Satisfaction of model assumptions improves precision and increases statistical power. It is more productive to make a model fit step by step (e.g.,…
Continue ReadingI do. So I implemented R’s function in Python. I wrote a bunch of tests for this for most uses I could think of and they all work. Except the length param, which I did not implement so far. Did not need it. It can be implemented by simply generating the desired number of natural…
Continue ReadingI don’t have time to do this project right now. However, since I gathered a bunch of relevant resources that I don’t want to have to re-find, I will write them down somewhere — here. My blog is my extended memory. Music genres are another fuzzy concept, like races. Lots of genres (and classification systems…
Continue ReadingNaming things in programming is hard. I can see 2 reasons for this. 1) It is hard to pick a name you won’t want to change later. With large projects, where things are not designed in detail before beginning to write the code, I often find that the names I gave things initially were not…
Continue ReadingI was working on a study and while doing so, I updated all my R packages. To my surprise, this changed the results in my analysis to a degree that it caused a change in the conclusion. I suspected it was due to an update in the psych package. The update notes read: Bug fixed…
Continue ReadingI wrote about this before, but since this is a frequent problem and my last post wasn’t brief, here’s a shorter version. The primary way to install software in Linux is to rely on apt-get (apt in Mint) or some other package manager. The way this works is that there is a central server which…
Continue ReadingNote: 2018 June 26 Server down right now, investigating. Note: August 16, 2017 server IP changed to 67.207.92.10. Original post We need dplyr for this: library(dplyr) First, use the anon user to log into the SQL server (user = “anon”, pass = “”, ip = “67.207.92.10”, port = 3306): sql = src_mysql(“population_freqs”, host = “67.207.92.10”,…
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