Category Archives: Tutorial

Programming Nodes in KNIME with Scala, Part 1

This post will help get you started in programming nodes in KNIME using the Scala programming language. If you are unfamiliar with Scala, you might want to change that: From Wikipedia Scala has many features of functional programming languages like … Continue reading

Posted in KNIME, Scala, Tutorial | Tagged , , | 2 Comments

KNIME and R Integration with Unbalanced Classes in Test and Train Partitions

Integration of data analysis (whither “Data Mining”?) tools can lead to some interesting interactions. For example, on a recent project, I was trying to use R and R’s bnlearn package with KNIME. KNIME has some very cool R nodes to … Continue reading

Posted in Data Mining, KNIME, R, Tutorial | Tagged , , , | Leave a comment

R, Damned R, and Statistics

The great thing about R is that it’s written by statisticians. The worst thing about R is that it’s written by statisticians. Continue reading

Posted in KNIME, Statistics, Tutorial | Tagged , , | 1 Comment

Moving Average in LibreOffice Calc

(I googled a bit and I didn’t find an answer this question, so here it is.) How do you calculate a moving average of a value over a date range with an irregular sample interval in LibreOffice Calc? OR, given … Continue reading

Posted in Statistics, Tutorial | Tagged , , , , , , , , , | 3 Comments

HTTPS on AVM Fritz!

Short Story: To allow SSL access via MyFritz, remove MyFritz administration via SSL, and re-add SLL via the MyFritz permissions. Long Story: I decided to install OwnCloud on my Raspberry Pi, and use it as a Dropbox type service for … Continue reading

Posted in Privacy, Tutorial | Tagged , , , , , , , , | Leave a comment

Big Brother is made of little cookies

If you haven’t read this from Josh Snodgrass on Cathy O’Neill’s Mathbabe blog, you need to have a looksee. Install the two plugins, watch how the modern web is a web of information transmission just from one web page, and … Continue reading

Posted in Privacy, Tutorial | Tagged , | Leave a comment

LoopEnd Node class definition in KNIME

This is just a quick help message, that when you create a new LoopEnd Node via the “Create a New KNIME Node-Extension” option, that you’ll need to add explicitly “implements LoopEndNode” to the class definition. Otherwise the Workflow Scheduler won’t … Continue reading

Posted in KNIME, Tutorial | Tagged , , , | Leave a comment