A Mental Workload Evaluation Model Based on Improved Multibranch LSTM Network with Attention Mechanism

Table 2

Description of evaluation index.

Index	Calculation formula	Meaning
Acc		The proportion of correctly classified samples in relation to the total sample size.
P		The proportion of samples predicted to be positive that are also positive in comparison to the sample predicted to be positive.
R		The percentage of samples predicted to be positive among those that are actually positive.
F-score		In the evaluation of results, we weigh the importance of recall and precision and compute the harmonic mean of the two.

Note: TP is true positive, FP is false positive, TN is true negative, and FN is false negative.