The Impact of Online Media Big Data on Firm Performance: Based on Grey Relation Entropy Method

Table 4

The entropy correlation degree.

Category	Variables	ROAt	ROEt	ROAt+1	ROEt+1
E1	Salience	0.9936800	0.9928231	0.9923504	0.9916868
E2	Positive (total)	0.9922695	0.9929412	0.9927636	0.9924154
E3	Positive (original)	0.9933731	0.9939936	0.9937323	0.9932265
E4	Negative (total)	0.9978472	0.9965957	0.9964016	0.9957105
E5	Negative (original)	0.9914953	0.9909125	0.9910495	0.9905619
E6	Tenor	0.9968345	0.9957486	0.9962329	0.9959293