CommentsOmar Calzadilla, Other methods:
Rough Sets (The theory was originated by Zdzislaw Pawlak)
Will Dwinnell, Other methods:
GLMs, especially logistic regression
quadratic discriminant analysis
Matthias, Fuzzy Logic
You are missing fuzzy logic - a major tool for us at modern analytics
Note from the Editor
The average number of methods per voter was 4.1, significantly higher than 3.2 in 2006. In comparison with 2006, more data miners are using the classics methods of decision trees/rules and regression.
However, the highest growth was in use of other methods (see some mentioned above), Genetic algorithms, Boosting, Visualization, Hybrid methods, and Bagging.
The methods that suffered relative declines in popularity were SVM and Association Rules.
Here are the results of 2006 KDnuggets Poll on Data Mining Methods.