Remapping class numbers:
	0 To 1
	1 To 2
	2 To 3
Pruned decision tree written to csv/pittsburg-bridges-SPAN.csv.dt.
Unpruned decision tree written to csv/pittsburg-bridges-SPAN.csv.dt.unpruned.
fold 1: acc. = 66.67	#leaves = 2	max. depth = 1
fold 2: acc. = 50.00	#leaves = 15	max. depth = 6
fold 3: acc. = 66.67	#leaves = 19	max. depth = 7
fold 4: acc. = 55.56	#leaves = 20	max. depth = 7
fold 5: acc. = 55.00	#leaves = 12	max. depth = 6
***1***0.6666666***0.0216240***
***2***0.5000000***0.0184680***
***3***0.6666666***0.0211630***
***4***0.5555556***0.0155880***
***5***0.5500000***0.0165540***
accuracy = 58.70	#leaves = 13.60	max depth = 5.40