Hi! This is my personal website where I post about all kinds of technology-related things. Posts that contain computations in Julia can be reproduced by clicking the download link at the bottom of the post. For the source code of this website, see GitLab.

Contact: email.

*2024-05-30***Battery Learning Curves***Estimating the learning rate of batteries**2024-05-29***Summary of Same as Ever by Morgan Housel***A Guide to What Never Changes**2024-04-29***Some SaaS banned me, again***A reminder to not trust software as a service.**2024-04-25***The history of the ROC curve***The history of the receiver operating characteristic curve is well known, or is it?**2024-04-17***Updating my notes via email***Using Cloudflare Workers to update a Git repository based on an email.**2024-03-08***Installing Forgejo with a separate runner***Docker Compose configuration files and some scripts to get it working**2024-02-23***Encrypting and decrypting a secret with wasm_bindgen***Using AES-GCM using the Web Crypto (subtle.crypto) API.**2024-02-19***How much have batteries changed over time?***Looking at multiple years of data for phone and car batteries.**2024-01-28***An old solution to modern OpenAI GPTs problems***Running arbitrary programs inside a GPT.**2023-11-25***Triggering `entr`***Executing commands automatically upon file changes.**2023-01-24***GPT versus Google***Comparing results for queries from ChatGPT and Google.**2022-06-25***Why I still recommend Julia (for Data Science)***A deep dive on why the Julia language is productive**2022-03-19***Optimizing Julia code***How running time and time to first X can be reduced by fixing type inference problems.**2022-02-16***Static site authentication***Setting up authentication can be quite tricky. This post walks through a few options.**2021-12-01***Bayesian Latent Profile Analysis (mixture modeling)***This post discusses some latent analysis techniques and runs a Bayesian analysis for example data where the outcome is continuous, also known as latent profile analysis (LPA).**2021-11-17***Collinear Bayes***Verifying that a Bayesian model can handle collinearity better than a Frequentist model.**2021-11-07***Random forest, Shapley values and multicollinearity***How well do Shapley values and decision-tree-based models deal with multicollinearity?**2021-10-27***Nested cross-validation***Plots for nested cross-validation**2021-06-16***Increasing model accuracy by using foreknowledge***Using priors for binary logistic regression**2021-01-21***Random forest classification in Julia***Fitting a random forest classifier and reporting accuracy metrics.**2020-12-16***GitHub and GitLab commands cheatsheet***A cheatsheet for commands like 'Fix #2334'.**2020-11-29***Design cheatsheet***A summary of design tips and tricks.**2020-11-14***Frequentist and Bayesian coin flipping***Comparing both statistical paradigms on a coin flipping example.**2020-11-07***Installing NixOS with encryption on a Lenovo laptop***Specifically, installing NixOS on the Lenovo Yoga 7.**2020-11-04***The logit and logistic functions***Providing the definitions, some plots and useful values to remember.**2020-09-26***The principle of maximum entropy***Obtaining the least informative distribution.**2020-08-12***Writing effectively***Why writing should be valuable to the reader.**2020-07-29***Writing checklist***A list to quickly check for common mistakes in writing.**2020-06-28***Combinations and permutations***Deriving the equations for combinations and permutations.**2020-06-27***Comparing means and SDs***Transforming means and SDs from numbers in different ranges to the same range.**2020-05-11***Predicates and reproducibility***Thinking about the layers above statistics.**2020-03-05***Simple and binary regression***Applying a simple and binary (logistic) regression to simulated data.**2020-02-02***The greatest sales deck someone else has ever seen***It's Zuora's deck**2020-01-24***Correlations***The equations and some examples for the Pearson correlation coefficient.**2020-01-16***Benefits of writing blog posts***Convincing myself of why writing is a good habit to have.**2019-12-29***Statistical power from scratch***Explaining statistical power by first finding the binomial and normal distributions.**2019-12-03***Niceties in the Julia programming language***A quick walk through some Julia syntax and interesting features.**2019-12-01***NixOS configuration highlights***Particularily neat parts of using NixOS.**2019-10-29***Entr***A tool for executing commands automatically upon file changes.**2015-08-25***QoS setup using Tomato in combination with an Experiabox***My first blog post.*

Rik Huijzer.
The text is licensed under CC BY-SA 4.0.
The code is licensed under the MIT License.
Website built with Franklin.jl and the Julia programming language.
Last update: 2024-06-15.