Heritage Science

Table 11 The RMSE result of different algorithms

From: Quantitative analysis of mixed pigments for Chinese paintings using the improved method of ratio spectra derivative spectrophotometry based on mode

Ratios by methods	Sample ratios
	Orpiment	10%	25%	50%	75%	90%	RMSE	Error range (%)
	Azurite	90%	75%	50%	25%	10%	RMSE	Error range (%)
FCLS		0.0179	0.0752	0.1766	0.2350	0.1831	0.0791	1.79–23.5
MVSA		0.0075	0.0557	0.1781	0.2530	0.2135	0.0941	0.75–25.3
RSDSM		0.0000	0.0500	0.2000	0.0500	0.0400	0.0685	0–20

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