Spectral Discrimination of Archaeological Sites Previously Occupied by Farming Communities Using In Situ Hyperspectral Data

Table 5

Error matrices showing the overall accuracy and kappa for the classification of the four soil classes, nonvitrified dung (NVD), midden (MD), nonsites (NS), and vitrified dung (VD), using all variables (33 elements) and the optimum variables (7 elements).

Class	Thirty-three elements					Seven elements
	KR	MD	NS	VD	Total	KR	MD	NS	VD	Total
KR	14	2	0	1	17	15	1	0	1	17
MD	1	8	2	0	11	1	8	2	0	11
NS	0	2	10	0	12	0	1	11	0	12
VD	1	0	0	11	12	2	0	0	10	12
Total	16	12	12	12	52	18	10	13	11	52
OA	82.69%					84.62%
Kappa	0.7674					0.7921