Missing Data Reconstruction Based on Spectral k-Support Norm Minimization for NB-IoT Data

Table 2

Performance evaluation for four methods by average MAPE and RMSE on the COD and total nitrogen datasets (unit: mg/L) with RMP.

Dataset	Missing rate	DRAWNNM		HaLRTC		ADMAR		Proposed method
		MAPE	RMSE	MAPE	RMSE	MAPE	RMSE	MAPE	RMSE
COD	α = 10%	15.745	38.475	16.701	39.421	16.945	39.584	14.546	38.491
	α = 20%	42.608	85.270	43.624	88.130	43.123	94.220	40.964	85.560
	α = 40%	99.641	189.678	91.248	195.781	90.478	198.657	88.735	188.953
Total nitrogen	α = 10%	6.175	45.285	7.930	48.698	7.270	52.357	6.190	45.025
	α = 20%	27.457	89.324	28.907	93.234	29.098	94.876	26.896	87.324
	α = 40%	86.323	175.239	88.680	168.853	89.510	158.680	80.764	155.381