C4.5 [release 5] decision tree generator Tue Sep 20 16:45:56 1994 ---------------------------------------- Options: File stem Read 300 cases (16 attributes) from vote.data Decision Tree: physician fee freeze = n: | adoption of the budget resolution = y: democrat (151.0) | adoption of the budget resolution = u: democrat (1.0) | adoption of the budget resolution = n: | | education spending = n: democrat (6.0) | | education spending = y: democrat (9.0) | | education spending = u: republican (1.0) physician fee freeze = y: | synfuels corporation cutback = n: republican (97.0/3.0) | synfuels corporation cutback = u: republican (4.0) | synfuels corporation cutback = y: | | duty free exports = y: democrat (2.0) | | duty free exports = u: republican (1.0) | | duty free exports = n: | | | education spending = n: democrat (5.0/2.0) | | | education spending = y: republican (13.0/2.0) | | | education spending = u: democrat (1.0) physician fee freeze = u: | water project cost sharing = n: democrat (0.0) | water project cost sharing = y: democrat (4.0) | water project cost sharing = u: | | mx missile = n: republican (0.0) | | mx missile = y: democrat (3.0/1.0) | | mx missile = u: republican (2.0) Simplified Decision Tree: physician fee freeze = n: democrat (168.0/2.6) physician fee freeze = y: republican (123.0/13.9) physician fee freeze = u: | mx missile = n: democrat (3.0/1.1) | mx missile = y: democrat (4.0/2.2) | mx missile = u: republican (2.0/1.0) Tree saved Evaluation on training data (300 items): Before Pruning After Pruning ---------------- --------------------------- Size Errors Size Errors Estimate 25 8( 2.7%) 7 13( 4.3%) ( 6.9%) <<