Prediction of Mine Dust Concentration Based on Grey Markov Model

Table 2

Prediction value of BP neural network.

Number	Concentration	Pre1	Pre2	Pre3
1	19.6100	16.5789	19.6552	22.7850
2	15.5775	16.5943	15.4312	23.1299
3	15.6900	16.7072	15.6100	23.7446
4	18.7425	17.5014	18.4569	24.7542
5	23.5300	22.3078	23.3166	26.2917
6	29.3186	37.1274	30.0419	28.7765
…	…	…	…	…
42	33.7009	33.2702	48.4017	44.6074
43	31.3700	31.9421	58.3134	56.7107
44	30.9197	31.8737	65.1613	61.7435
45	31.3700	31.8647	63.2409	59.2420
46	30.8403	30.8150	48.7600	49.8708
47	27.4500	27.3146	30.7901	35.2170