Remapping class numbers:
	0 To 1
	1 To 2
	2 To 3
Unpruned decision tree written to csv/pittsburg-bridges-SPAN.csv.dt.
fold 1: acc. = 55.56	#leaves = 11	max. depth = 5
fold 2: acc. = 61.11	#leaves = 17	max. depth = 7
fold 3: acc. = 50.00	#leaves = 16	max. depth = 7
fold 4: acc. = 50.00	#leaves = 15	max. depth = 6
fold 5: acc. = 50.00	#leaves = 15	max. depth = 6
***1***0.5555556***0.0159650***
***2***0.6111111***0.0187540***
***3***0.5000000***0.0185200***
***4***0.5000000***0.0172740***
***5***0.5000000***0.0213550***
accuracy = 53.26	#leaves = 14.80	max depth = 6.20