Erwan LE PENNEC
Erwan LE PENNEC
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Data Science References
I’m involved in several Data Science programs in both initial and continuing education. They differ depending on the audiences but the backbones are the same. In order to enjoy such programs, a basic knowledge in Math, Computer Science and Programming is required.
2022/05/19
11 min de lecture
ggwordcloud: a word cloud geom for ggplot2
ggwordcloud provides a word cloud text geom for ggplot2. The placement algorithm implemented in C++ is an hybrid between the one of wordcloud and the one of wordcloud2.js. The cloud can grow according to a shape and stay within a mask.
2020/02/01
10 min de lecture
Visualization Examples
A ggplot2 tour of good and bad visualization examples
2019/10/01
28 min de lecture
Supervised Classification: an Exploration with R
The twoClass dataset Statistical point of view Generative Modeling Logistic regression Kernel Methods Optimization point of view SVM NN Trees Model comparison Global comparison K-NN Comparison We will use the twoClass dataset from Applied Predictive Modeling, the book of M.
2019/07/01
11 min de lecture
From Parallel Plot to Radar Plot
ggplot2 provides a very elegant way to describe graphics. In this example, we will use its grammar to show how the parallel plot and the radar plots are related.
2016/01/01
3 min de lecture
Mathematical Genealogy
This is an attempt to build automatically a mathematical genealogy using the data from http://genealogy.math.ndsu.nodak.edu/. This is used as an example to show how easy it is to scrap data from the web and to graph beautiful trees with R.
2016/01/01
27 min de lecture
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