Predictive Model of Humidity in Greenhouses through Fuzzy Inference Systems Applying Optimization Methods

Table 3

Spearman correlation matrix of the variables in the greenhouse.

Variable	act_fan	act_heating	act_solenoid_valve	co2_ppm	ground_humidity_per	hum	light_Intensity	Luminosity	temp
act_fan	1.000	−0.075	0.013	−0.261	−0.125	−0.190	0.084	0.140	0.038
act_heating	−0.075	1.000	−0.019	0.221	0.086	−0.181	−0.134	−0.229	−0.066
act_solenoid_valve	0.013	−0.019	1.000	0.244	0.044	0.040	0.050	0.034	0.005
co2_ppm	−0.261	0.221	0.244	1.000	0.217	0.164	0.147	−0.043	−0.101
ground_humidity_per	−0.125	0.086	0.044	0.217	1.000	−0.054	0.246	0.020	0.241
hum	−0.190	−0.181	0.040	0.164	−0.054	1.000	−0.106	−0.216	−0.584
light_Intensity	0.084	−0.134	0.050	0.147	0.246	−0.106	1.000	0.831	0.398
Luminosity	0.140	−0.229	0.034	−0.043	0.020	−0.216	0.831	1.000	0.441
temp	0.038	−0.066	0.005	−0.101	0.241	−0.584	0.398	0.441	1.000