Table 2.

Performance of different methods on the KIRC dataset.

	Method	Dictionary Size=256	Dictionary Size=512	Dictionary Size=1024
280 training	PSD2SPMNR	99.03 ± 0.20	98.89 ± 0.19	98.92 ± 0.21
	PSD1SPMNR	98.98 ± 0.35	98.81 ± 0.45	98.69 ± 0.41
	PSD1SPMLR [9]	97.19 ± 0.49	97.27 ± 0.44	97.08 ± 0.45
	ScSPM [34]	94.52 ± 0.44	96.37 ± 0.45	96.81 ± 0.50
	KSPM [24]	93.55 ± 0.31	93.76 ± 0.27	93.90 ± 0.19
	CTSPM	87.45 ± 0.59	87.95 ± 0.49	88.53 ± 0.49
140 training	PSD2SPMNR	98.26 ± 0.34	98.07 ± 0.46	97.85 ± 0.56
	PSD1SPMNR	98.17 ± 0.72	98.05 ± 0.71	97.99 ± 0.82
	PSD1SPMLR [9]	96.80 ± 0.75	96.52 ± 0.76	96.55 ± 0.84
	ScSPM [34]	93.46 ± 0.55	95.68 ± 0.36	96.76 ± 0.63
	KSPM [24]	92.50 ± 1.12	93.06 ± 0.82	93.26 ± 0.68
	CTSPM	86.55 ± 0.99	86.40 ± 0.54	86.49 ± 0.58
70 training	PSD2SPMNR	96.67 ± 0.53	96.20 ± 0.54	95.57 ± 0.66
	PSD1SPMNR	96.42 ± 0.68	96.41 ± 0.59	96.03 ± 0.69
	PSD1SPMLR [9]	95.12 ± 0.54	95.13 ± 0.51	95.09 ± 0.40
	ScSPM [34]	91.93 ± 1.00	93.67 ± 0.72	94.86 ± 0.86
	KSPM [24]	90.78 ± 0.98	91.34 ± 1.13	91.59 ± 0.97
	CTSPM	84.76 ± 1.32	84.29 ± 1.53	83.71 ± 1.42