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Best decision tree model associated to paper "Can machine learning techniques help to improve the Common Fisheries Policy?", published in the International Work Conference on Artificial Neural Networks (IWANN 2013)
Authors: María Pérez Ortiz, Rosa Colmenarejo, Juan Carlos Fernández and César Hervás Martínez
Affiliation: University of Córdoba, Dept. of Computer Science and Numerical Analysis, Rabanales Campus, Albert Einstein Building, 14071, Córdoba, Spain
For any doubt, please contact to i82perom at uco.es
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The variables used for the problem are the following: Zone, IRCSCode, Loa, TonGt, MainPower and AuxiliaryPower
The classes in the problem range from 1 (lowest environmental impact of the vessels) to 10 (highest environmental impact of the vessels).
(-/-) makes reference to the number of correctly and incorrectly classified patterns in each leaf of the tree.

Best Decision Tree:

if Loa <= 13.78
	if Zone = 5 then class 3 (445/4)
	if Zone != 5
		if TonGt <= 3.97 then class 6 (3083/25)
		if TonGt > 3.97
			if Zone = 1 then class 6 (108/16)
			if Zone != 1
				if Zone = 4
					if TonGt <= 10.36 then class 6 (230/38)
					if TonGt > 10.36
						if Loa <= 122 then class 6 (12/7)
						if Loa > 122
							if MainPower <= 79.47 then class 1 (21/14)
							if MainPower > 79.47 then class 7 (10/6)
				if Zone != 4 then class 6 (425/50)
if Loa > 13.78
	if TonGt <= 197.95
		if Zone = 5 then class 3 (31/6)
		if Zone != 5
			if Zone = 1
				if Loa <= 23.88
					if TonGt <= 243 then class 6 (20/5)
					if TonGt > 243
						if TonGt <= 72.42
							if TonGt <= 546 then class 5 (22/12)
							if TonGt > 546 then class 7 (11/5)
						if TonGt > 72.42 then class 5 (10/5)
				if Loa > 23.88 then class 7 (61/10)
			if Zone != 1
				if Zone = 2
					if TonGt <= 124.47
						if Loa <= 16.8 then class 6 (67/28)
						if Loa > 16.8 then class 7 (70/29)
					if TonGt > 124.47 then class 1 (33/12)
				if Zone != 2
					if Loa <= 15.21
						if AuxiliaryPower <= 89
							if Zone = 3 then class 6 (20/9)
							if Zone != 3
								if MainPower <= 63.28 then class 8 (24/5)
								if MainPower > 63.28
									if MainPower <= 111.85
										if TonGt <= 14.72 then class 6 (10/6)
										if TonGt > 14.72
											if TonGt <= 17.72 then class 6 (10/5)
											if TonGt > 17.72 then class 8 (15/6)
									if MainPower > 111.85 then class 2 (13/9)
						if AuxiliaryPower > 89 then class 6 (10/5)
					if Loa > 15.21
						if TonGt <= 657
							if MainPower <= 82.41 then class 8 (57/2)
							if MainPower > 82.41
								if TonGt <= 30.23 then class 7 (67/26)
								if TonGt > 30.23
									if MainPower <= 153.79 then class 8 (92/23)
									if MainPower > 153.79
										if Zone = 3
											if MainPower <= 224.43 then class 8 (21/2)
											if MainPower > 224.43 then class 7 (10/5)
										if Zone != 3
											if TonGt <= 42.86 then class 7 (29/9)
											if TonGt > 42.86 then class 8 (85/31)
						if TonGt > 657 then class 8 (196/30)
	if TonGt > 197.95
		if Loa <= 32.5
			if Zone = 3 then class 10 (11/1)
			if Zone != 3
				if Zone = 2
					if TonGt <= 293 then class 8 (75/34)
					if TonGt > 293 then class 4 (12/6)
				if Zone != 2 then class 8 (17/9)
		if Loa > 32.5
			if MainPower <= 17912
				if TonGt <= 263 then class 7 (10/3)
				if TonGt > 263
					if AuxiliaryPower <= 809.42
						if Zone = 2
							if Loa <= 50
								if TonGt <= 393 then class 10 (25/11)
								if TonGt > 393 then class 1 (22/3)
							if Loa > 50 then class 10 (15)
						if Zone != 2 then class 10 (45/6)
					if AuxiliaryPower > 809.42 then class 10 (10/5)
			if MainPower > 17912 then class 7 (19/3)