https://www.tdj28.org/Recent content on TDJ28Hugo -- gohugo.ioen-us© 2026 TJMon, 27 Apr 2026 00:00:00 +0000https://www.tdj28.org/en/blog/post/tech/ml/whats-your-p-chihuahua/Mon, 27 Apr 2026 00:00:00 +0000https://www.tdj28.org/en/blog/post/tech/ml/whats-your-p-chihuahua/Why the artificial superintelligence alignment problem may be a domestication problem: not whether ASI hates us, but whether it can make us smaller, safer, and easier to keep.https://www.tdj28.org/en/blog/post/computer_science/algorithms/prefix-trees/Sat, 21 Feb 2026 00:00:00 +0000https://www.tdj28.org/en/blog/post/computer_science/algorithms/prefix-trees/A rigorous analysis of Prefix Trees (Tries) and Radix Trees, evolving from memory hierarchy constraints to cryptographically secure Data-Oblivious architectures.https://www.tdj28.org/en/blog/post/math_science/datasci/vector-search-math/Tue, 17 Feb 2026 00:00:00 +0000https://www.tdj28.org/en/blog/post/math_science/datasci/vector-search-math/A comprehensive deep dive into the mathematical foundations and algorithms of modern vector search, including HNSW, DiskANN, Quantization, and the Curse of Dimensionality.https://www.tdj28.org/en/blog/post/tech/ml/wiggle_while_you_work/Sun, 18 Aug 2024 00:00:00 +0000https://www.tdj28.org/en/blog/post/tech/ml/wiggle_while_you_work/Dealing with low fps video can make re-identification of individuals between frames more difficult as the potential targets tend to “jump” between frames in a way that throws off trackers. Here, I show how applying a Gaussian jitter or wiggle to artificially increase the fps of the video can improve tracking.https://www.tdj28.org/en/blog/post/math_science/phys_math/mathieu_equation/Sat, 17 Aug 2024 00:00:00 +0000https://www.tdj28.org/en/blog/post/math_science/phys_math/mathieu_equation/Of great use to physics, including one of the promising paths towards quantum computers, is the ion trap. Though there are various models in use, we focus here on Paul-style models. To do so, we need to understand Mathieu’s equations and their corresponding solutions in enough detail to grasp the function of the Paul ion trap. In this report, we explore the behavior of Mathieu’s equation and its solutions for the Paul ion trap.https://www.tdj28.org/en/blog/post/tech/ml/lil_llm_01/Sun, 04 Aug 2024 15:21:05 -0700https://www.tdj28.org/en/blog/post/tech/ml/lil_llm_01/In this first part in a multipart series, we build a little model LLM that can construct basic phrases and display the effects of temperature. This first version doesn’t use neural networks but does demonstrate some fundamentals of LLM terminology.https://www.tdj28.org/en/blog/post/math_science/datasci/bayesian-look-rapid-tests/Fri, 02 Aug 2024 15:21:05 -0700https://www.tdj28.org/en/blog/post/math_science/datasci/bayesian-look-rapid-tests/A look at how Bayesian statistics can help us understand ways to make decisions (in the context of COVID-19 rapid test accuracy). This post will introduce concepts related to Bayesian statistics, but may still be interesting to individuals already familiar with the topic.https://www.tdj28.org/en/blog/post/tech/ml/sam2_with_yolo/Thu, 01 Aug 2024 19:21:05 -0700https://www.tdj28.org/en/blog/post/tech/ml/sam2_with_yolo/A quick and dirty example of creating a chef cookbook with rspec tests.https://www.tdj28.org/en/blog/post/math_science/kerbal/apollo-into-orbit/Sat, 23 Jul 2022 15:21:05 -0700https://www.tdj28.org/en/blog/post/math_science/kerbal/apollo-into-orbit/Using the krpc library, we can automate a rocket simulator, turnking Kerbal space program into a more powerful educational tool. In this post, we automate the launching and circularization of the Kerbal equivalent of the Apollo rocket.https://www.tdj28.org/en/blog/post/math_science/chaos/rossler_strange_attractor_with_python_series/rossler_strange_attractor_with_python_part1/Sun, 03 Jul 2022 19:21:05 -0700https://www.tdj28.org/en/blog/post/math_science/chaos/rossler_strange_attractor_with_python_series/rossler_strange_attractor_with_python_part1/Simple Integration using Euler’s methodhttps://www.tdj28.org/en/blog/post/tech/comp_sci/headless-python-selenium-with-behave/Sun, 26 Aug 2018 19:21:05 -0700https://www.tdj28.org/en/blog/post/tech/comp_sci/headless-python-selenium-with-behave/Selenium Testing a Web App can be a quick and productive win.https://www.tdj28.org/en/blog/post/math_science/datasci/cividis-accessible-colormap-in-datascience/Sun, 19 Aug 2018 19:21:05 -0700https://www.tdj28.org/en/blog/post/math_science/datasci/cividis-accessible-colormap-in-datascience/Recent work at PNNL has introduced a mathematically optimized colormap called Cividis that optimizes viewing of heatmaps and other plots for both those with and without full color visionhttps://www.tdj28.org/en/blog/post/math_science/datasci/exploring-wikipedia-page-counts-trends/Sun, 05 Aug 2018 19:21:05 -0700https://www.tdj28.org/en/blog/post/math_science/datasci/exploring-wikipedia-page-counts-trends/There are some readily available tools in python for doing time series analysis, and these tools can be used to study Wikipedia page count stats.https://www.tdj28.org/en/blog/post/tech/devops/risk-analysis-bowtie-diagram-latex/Sun, 24 Jun 2018 19:21:05 -0700https://www.tdj28.org/en/blog/post/tech/devops/risk-analysis-bowtie-diagram-latex/Couldn’t find a good example on the web, wrote one instead.https://www.tdj28.org/en/blog/post/math_science/astro/trappist1-is-probably-not-alive/Fri, 24 Feb 2017 19:21:05 -0700https://www.tdj28.org/en/blog/post/math_science/astro/trappist1-is-probably-not-alive/While the findings of additional potentially habitable planets around TRAPPIST-1 is exciting, it also isn’t overly promising.https://www.tdj28.org/en/blog/post/other/putting-a-space-station-over-philly/Mon, 20 Feb 2017 19:21:05 -0700https://www.tdj28.org/en/blog/post/other/putting-a-space-station-over-philly/A quick and easy (though not free) way to put a imaginary space station over Philadelphia.https://www.tdj28.org/en/blog/post/tech/devops/chef-cookbook-example/Sat, 28 Jan 2017 19:21:05 -0700https://www.tdj28.org/en/blog/post/tech/devops/chef-cookbook-example/A quick and dirty example of creating a chef cookbook with rspec tests.https://www.tdj28.org/en/blog/post/tech/comp_sci/python-operational-chaining/Fri, 20 Jan 2017 19:21:05 -0700https://www.tdj28.org/en/blog/post/tech/comp_sci/python-operational-chaining/It is important to understand Python’s use of operational chaining to avoid programming errors.https://www.tdj28.org/en/blog/post/tech/devops/abstracting-networking-with-docker-containers/Thu, 03 Mar 2016 19:21:05 -0700https://www.tdj28.org/en/blog/post/tech/devops/abstracting-networking-with-docker-containers/Docker comes with a default network, but you can make your own network of unlimited complexity.https://www.tdj28.org/en/search/Mon, 01 Jan 0001 00:00:00 +0000https://www.tdj28.org/en/search/