For connection between technologies, this wheel chart type is not very helpful, things would be much clearer on confusion matrix[1]. It is a (ha!) confusing nam

For connection between technologies, this wheel chart type is not very helpful, things would be much clearer on confusion matrix[1]. It is a (ha!) confusing name, so it is better to call it coincidence matrix, but "confusion" is a traditional name for this already. The authors actually use thix matrix type viz many times in the report e.g. for correlating salary information to other categories. [1] https://en.wikipedia.org/wiki/Confusion_matrix https://en.wikipedia.org/wiki/Confusion_matrix