TABLE I.

The acronyms and abbreviations used in this paper and their respective meanings.

Acronym/Abbreviation	Meaning
MLHM	machine learning head model
TBI	traumatic brain injury
MPS	maximum principal strain
MPSR	maximum principal strain rate
MMA	mixed martial arts
CF	college football
DRCA	domain regularized component analysis
GAN	generative adversarial network
mTBI	mild traumatic brain injury
KMM	kernel mean matching
HM	head model simulated dataset
Ang. Vel. Mag.	angular velocity magnitude
Ang. Acc. Mag.	angular acceleration magnitude
PCA	principal component analysis
t-SNE	t-distributed stochastic neighbor embedding
DNN	deeo neural network
ReLu	rectified linear unit
Adam	adaptive moment estimation
MAE	mean absolute error
RMSE	root mean squared error