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Fixing Kibana error ‘Error in visualization – Cannot read property of undefined’

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  • 1 min read

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… 

On the phenomenon of marketing books: why they are all the same

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  • 8 min read

To many, including myself, the amount of hot air that is circulating in marketing books is of unbearable proportion. Buzzword bingo and infinite repetition of the same arguments makes us wonder who reads these books. But more importantly, who writes these books and with what purpose? Marketers write marketing books… 

randomForest gives NA/NaN/Inf in foreign function call and how to solve it

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  • 3 min read

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…