Prediction of Soil Heavy Metal Content Based on Deep Reinforcement Learning

Table 1

Convergence time of different models on different data sets (s).

Model —	Cd		Cr		Ni		Pb
	Min	Mean	Min	Mean	Min	Mean	Min	Mean
DQN	435	4.68	19.50	20.97	6.60	7.10	6.77	7.28
DDQN	4.42	4.76	17.79	19.13	6.39	6.88	9.33	10.04
DuDQN	5.57	5 99	>>	>>	>>	>>	7.45	8.02
ADQN	3.56	3.83	15.22	1637	3.67	3.95	4.59	4.94