Lego Bricks in LaTeX

Who does not enjoy lego bricks, raise a hand! In this post, I am sharing an elegant and efficient way of plotting bricks under 3d view in TikZ. Briefly speaking, it utilizes canvas transforms to plot facets, and describes boundaries of studs in a simple way with cylindrical coordinates based on the azimuth angle (localizing …

Cylinders in LaTeX the Easy and Correct Way

Drawing cylinders in vector graphic is a common task. It is less trivial as it looks at first glance, due to the challenge of finding a proper projection. In this post, I share a simple and robust recipe using the tikz-3dplot package of LaTeX. As opposed to many examples shared online, this approach automatically identifies …

Automating Accessors and Mutators Tests

In object-oriented programming, there are plenty of accessors and mutators to test. This post demonstrates that this effort can be automated with reflection 🚀. The inspiration came from discussions I had with my students during our software-engineering class: how to increase code coverage without lots of manual effort? 🤔 Roughly speaking, the reflection mechanism allows …

Tracking Training Performance of LDA Models

In my recent open source contribution I enabled callbacks in the scalable (multi-core) implementation of Latent Dirichlet Alocation in the gensim library ​1​. This will, in turn, allow users for faster and more accurate turning of the popular topic extraction model. An obvious use case is monitoring and early stopping of training, with popular coherence …

Working with Abstract Syntax Trees

Visualizing code as a syntax tree is both funny and useful, as seen from impressive applications such as creating lineage of SQL which helps to understand complex queries in business. Abstract syntax trees are not only widely used in industry but are still a subject of top academic research​1,2​. This post demonstrates how to work …

Customized Jupyter environments on Google Cloud

Kaggle docker images come with a huge list of pre-installed packages for machine-learning, including the support of GPU computing. They run within a container as a Jupyter application accessed by users through its web interface. Running a custom image boils down to these steps Below we can see how it looks like The following test …

Repairing user-managed notebooks on Google Cloud

In this note, I am sharing a case study on debugging and fixing jupyter-lab access issues. The diagnostic script can be run on a VM instance as shown below: Jupyter service runs from a container, but it somehow stopped in this case 😳 Not a problem! We can restart the container, but carefully choosing the …