Appendix 8: Classification Tree of Fish Farm Central Control System

Appendix 7: Concept-Scoring Matrix

Concept-Scoring Matrix

Selection Criteria	Weight (%)	Concept 1
		Rating	Weighted Score
Operating time	12	4	0.48
Easy to assemble	12	2	0.24
Start up cost	13	4	0.52
Appearance	5	3	0.15
Labour intensive	6	5	0.18
Maintenance cost	10	3	0.3
Easy to handle	10	4	0.4
Degree of automatic	10	4	0.4
Ease of maintenance	9	3	0.27
Portability	4	3	0.12
Rate of data transfer	5	5	0.25
Confirm to standard	4	4	0.16
Total	100		3.47
Rank			2
Continue			YES

Selection Criteria	Weight (%)	Concept 2
		Rating	Weighted Score
Operating time	12	5	0.6
Easy to assemble	12	3	0.12
Start up cost	13	5	0.65
Appearance	5	4	0.2
Labour intensive	6	5	0.3
Maintenance cost	10	4	0.4
Easy to handle	10	5	0.5
Degree of automatic	10	4	0.4
Ease of maintenance	9	4	0.36
Portability	4	4	0.16
Rate of data transfer	5	3	0.15
Confirm to standard	4	5	0.2
Total	100		4.04
Rank			1
Continue			YES

Selection Criteria	Weight (%)	Concept 3
		Rating	Weighted Score
Operating time	12	2	0.24
Easy to assemble	12	4	0.48
Start up cost	13	1	0.13
Appearance	5	4	0.2
Labour intensive	6	1	0.06
Maintenance cost	10	4	0.4
Easy to handle	10	4	0.4
Degree of automatic	10	2	0.2
Ease of maintenance	9	5	0.45
Portability	4	5	0.16
Rate of data transfer	5	4	0.2
Confirm to standard	4	3	0.12
Total	100		3.04
Rank			3
Continue			NO

Selection Criteria	Weight (%)	Concept 4
		Rating	Weighted Score
Operating time	12	2	0.24
Easy to assemble	12	1	0.12
Start up cost	13	2	0.26
Appearance	5	1	0.05
Labour intensive	6	2	0.12
Maintenance cost	10	1	0.1
Easy to handle	10	2	0.2
Degree of automatic	10	2	0.2
Ease of maintenance	9	1	0.09
Portability	4	1	0.04
Rate of data transfer	5	4	0.2
Confirm to standard	4	2	0.08
Total	100		1.7
Rank			4
Continue			NO

Relative Performance Rating

Much worse than reference 1

Worse than reference 2

Same as reference 3

Better than reference 4

Much better than reference 5