Remapping class numbers:
	0 To 1
	1 To 2
	2 To 3
Pruned decision tree written to data/csv/pittsburg-bridges-MATERIAL.csv.dt.
Unpruned decision tree written to data/csv/pittsburg-bridges-MATERIAL.csv.dt.unpruned.
fold 1: acc. = 85.71	#leaves = 2	max. depth = 1
fold 2: acc. = 85.71	#leaves = 11	max. depth = 5
fold 3: acc. = 71.43	#leaves = 11	max. depth = 5
fold 4: acc. = 66.67	#leaves = 16	max. depth = 7
fold 5: acc. = 86.36	#leaves = 10	max. depth = 5
accuracy = 79.25	#leaves = 10.00	max depth = 4.60