what's the meaing of Dao? Is it gradients?

[FrankWork]

For example

matrixRelationDao = (float *)calloc(dimensionC*relationTotal, sizeof(float));
matrixW1Dao =  (float*)calloc(dimensionC * dimension * window, sizeof(float));
matrixB1Dao =  (float*)calloc(dimensionC, sizeof(float));

updateMatrixRelation = (float *)calloc(dimensionC*relationTotal, sizeof(float));
updateMatrixW1 =  (float*)calloc(dimensionC * dimension * window, sizeof(float));
updateMatrixB1 =  (float*)calloc(dimensionC, sizeof(float));

[shubhamjha97]

The variables whose names end with "Dao" are the parameters of the target networks.