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| classPP | Projection Pursuit for Supervised Classification |
| PP.classify | Predict class for the test set and calculate prediction error |
| PP.optimize.anneal | Find optimal Projection by maximizing selected PPindex |
| PP.optimize.Huber | Find optimal Projection by maximizing selected PPindex |
| PP.optimize.plot | Find optimal Projection by maximizing selected PPindex |
| PP.optimize.random | Find optimal Projection by maximizing selected PPindex |
| PP.Tree | Find PP tree structure |
| PPindex.class | Calculate Projection Pursuit index |
| PPindex.LDA | Calculate Projection Pursuit index |
| PPindex.Lp | Calculate Projection Pursuit index |
| PPindex.PDA | Calculate Projection Pursuit index |