In this blog post I will introduce you to building and training your own neural network algorithm in R through Keras & TensorFlow. If you haven’t installed Keras for R yet, please follow the instructions explained in part 1. I have explicitly chosen to work with structured data in this…
For analysis, I prefer R over Python too. Last year, Tensorflow and Keras were released for R. So why not give it a try? Here’s how to proceed. Installation First step, (1) installing the Anaconda (or Miniconda) distribution on you machine. If you’re not too fond of a bloated Anaconda…
A lot of my colleagues run into problems with their virtual environments in Visual Studio Code. We use venv as environment manager for Python projects and sometimes it feels like VS Code really doesn’t do what we expect of it. Here’s what you need to do to change virtual environments…
Kibana is a great tool, with corporate-level user management, to visualize data from the Elasticsearch stack. Given the highly customizeable user roles, it’s easy to run into errors that appear to be gibberish. Here’s an example: Error in VisualizationCannot read property ‘x’ of undefined It seems to not make a…
Here’s something I used to bump in a lot when working with external files that I receive from clients: some gibberish prepended to the first column name of a data frame when using read.csv. However, there’s a good reason why this happens. The first character is a magical character, invisible…
One of the compulsive things I do in my programming life is trying to keep all column names in uppercase. Inbetween my code you can often find a line of code that manually adjusts the column names of a data frame. However, I read the following in a colleague’s code…
Personally, Random Forest is one of my favorite algorithms for supervised learning. It’s quick and dirty and still allows for some interpretation. However, R and the RandomForest package are somewhat cryptic when it comes to requirements not met to properly train the algorithm. I bumped a lot into this error…
In R, it often happens that I need to calculate the share of each column by row. In this very simple example I would like to update the following table: apples oranges bananas pineapples 2 4 6 3 1 0 9 2 5 1 2 3 and I would like…
If you are running into this error in R, chances are that you are running a recursive function that runs too deep. I found this page to be particularly good in explaining the concept. But here’s an example: In this example, we run the pop_pringles function and we will keep…
Taking a Docker course, building your first image and nothing happens? Here’s why and how to solve this issue. When you run the docker build command, the Docker client will send the “context” of your Dockerfile via REST to the Docker daemon. This “context” is the content of what is…